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					[J
u                                        DOEIORl07-1339Nl & D2

r   J

r   I
,. J .              NORTHEAST PLUME
             PRELIMINARY CHARACTERIZATION
'l                  SU1vfMARY REPORT

q
         Vol. 1 Bac~ground, Field Methods, Site Conceptual.
:l
                Model, and Results of Investigation
~l
                                                           I
                                                       j


l




                             July 1995


                    •
                     CLEARED FOR
                    PUBUC AB.EASE~
                                       Oak Ridge Operations
                                        Paducah Site Office
                                          P.O. Box 1410
                                        Paducah. KY 42001
                                              August 1, 1995



Mr. Tony Able
Remedial Project Manager
United States Environmental Protection Agency
Region N
345 Courtland Street, N. E.
Atlanta, Georgia 30365

Ms. Caroline Patrick Haight, Director
Division of Waste Management
Kentucky Department for Environmental Protection
14 Reilly Road, Frankfort Office Park
Frankfort, Kentucky 40601

NORTHEAST PLUME PRELIMINARY CHARACTERIZATION SUMMARY REPORT,
PADUCAH GASEOUS DIFFUSION PLANT (PGDP), PADUCAH, KENTUCKY
(DOElORl07-1339&D2)

Dear Mr. Able and Ms. Haight:

Enclosed is the D2 version of the subject document for your review and approval. The comments
from the Environmental Protection Agency (EPA) and the Kentucky Department for
Environmental Protection received on May 4, 1995, and May 9, 1995, respectively, have been
incorporated.

In an effort to control reproduction costs, we are asking all recipients to reuse the binders which
currently contain the D 1 draft of this document. In addition, as agreed during the comment
resolution conference call, only one of the enclcsed copies includes a hard copy of the sampling
results. The remaining copies include a disk with the data. Please review the enclosed
information, and if you have any questions or need additional information, call Myrna Espinosa
Redfield at (502) 441-6815.

                                              Sincerely,


                                        ~                  l'-I./Jy
                                              Jimmie C. Hodges, Site Manager
                                              Paducah Site Office

EF-22:Redfield

Enclosure

cc:     T. Taylor. KDEP/Frankfort
                                               ,.   ..
I
I                                            CERTIFICATION



 I    Document Identification:       Northeast Plume Preliminary Characterization Summary
                                     Report· DOE/OR/07~1339'& D2
 'I
      I certify under penalty of law that I ·have personallyexaminedaild am familiar with the
 I    information submitted in this-application and al}.;attachmentsand that, based on my inquiry of
      those persons immediately responsible for obtaining the information contained in the

 I    application, I believe that the information is true, accurate, and complete. lam aware that
      there are. significant penaities fot submitting false information, including the possibility of fine
      and imprisonment..                                             '                     .

.1
 I    u. S. Department of Energy
      Owner and· Operator

 I
      Q~c~·· .
'I                   .
      Emmie C. Hodges, Paducah Site Manager
      Paducah Site Office
                .
                                                                           Date Signed

      u. S. Department' of Energy
 ,I
 I    The Department of Energy has signed as "owne~ and operator" and Lockheed'Martin Energy
      Systems, Inc., has signed as "co-operator" this application for the permitted facility~ The

"11   Department has determined that dual signatures best' reflect the actual apportionment of
      responsibility under which the Department's, RCRA responsibilities are for policy,
      programmatic, funding, and,. scheduling decisions,aswell as geileral'oversight, and the
:'1   contractor's RCRA responsibilities are for day-to.,daYoperatlons (in accordance With general
      directions given. by ,the Department of Energy as1part of.its 'general oversight responsibility),
      including but not limited to, the following responsibilities: waste analyses and handling,
 ,I   monitoring, .recordkeeping, reporting, ,and contingency planning;, 'For purposes of the
      certification required by 40CFR 'Section 270.U(d), the Department of Energy's ','
      representatives certify, to the best of their knowled,geand belief, the truth accuracy and'
 :1   completeness of the application for their respective areas of ,responsibility.


'1'                                                  Page 1 of2


 I'
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 I
 ·1                                            CERTIFICATION



 I     Document Identification:        Northeast Piume Preliminary Characterization Summary
                                       Report DOE/OR/07-1339 & D2·
 I
        I ~rtify under penalty of law that,l have persomillyexa~ined·and.,am farrtiliar with the
 I    , informationsubntitted in thisapplieation and 8J.l attachmentsand'that,basedon my inquiry of
        those persons immediately responsible for obtaining the' information contained in the
        appliCation, I believe that the information is true, accurate, and complete. I am aware that . '
 I    , there are significant penalties foisubmittiilg false information, including .the possibility of fine
        and imprisonment               "                             ....'

 I
 I     Lockheed Martin Energy Systems, Inc.
       Co-Operator

 I
 I                                      ms, Inc.'                              Date Signed

·1
 I     The Department. of Energy has signed as "owner and operator" and Lockheed Martin Energy
       Systems, Inc., has signed as "eo-operator" this application for the permitted facility. The
       Department has determined that dual signatures best reflect the actual apportionment of

 I     responsibility under which the Department's RCRA responsibilities are for policy, ,
       programmatic, funding, ·and scheduling deci'sions, as' weUaS general oversight,and the
       contractor' sRCRA responsibilities are for day-to.,.day operations (in accordanc,e with general '
 I     directions given by the Department of Energy as part of its general oversight responsibility),
       including but not limited to, ·the following responsibilities: waste analyses' and' handling,
       monitoring, record keeping, repo,rting,and contingency .planning.For purpoSes of the '.
 I     certification req~,ired by 40 CFR Section 270;1 l(d),Lockheed' Martin Energy Systems, Inc.'s,
       represenfativescertify ,to,thebest ,oftheir knowledge and belief,the truth accuracy and
       completeness ·of the application for their respective areas of responsibility..
 'I                              ,                  .




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I   DATE OF ISSUE: July 28, 1995                     DOCUMENT NUMBER: DOElORl07-1339 & D2
                                                                           KYIER-65 & D2

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I                                    NORTHEAST PLUME
                               PRELIMINARY CHARACTERIZATION
                                      SUMMARY REPORT
I
I
                                           L. K. Gamer
I                                          E. E. Marti
                                           D. R. Smuin

I
I
I
I
I                                             Prepared by

I                         Environmental Management and Enrichment Facilities
                                      Paducah, Kentucky 42002
                                             Managed by
                           LOCKHEED MARTIN ENERGY SYSTEMS, INC.
I                                               for the
                           UNITED STATES DEPARTMENT OF ENERGY
                               Under Contract No. DE-AC05-760ROOOO 1
I
I
I
I                                                               CONTENTS


I   ACRONYMS .......................................................................... x

I   PREFACE ............................................................................ xii

    EXECUTIVE SUMMARY .............................................................. xiv
I   1. INTRODUCTION ................................................................... 1


I         1.1   BACKGROUND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1
                                                   -
                1.1.1       Site .................................. " . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..                    1

I               1.1.2
                1.1.3
                1.1.4
                            Groundwater Contamination ...........................................
                            Regulatory Framework ................................................
                            Report Scope ........................................................
                                                                                                                                                    1
                                                                                                                                                    1
                                                                                                                                                    4

I   2. METHODS OF FIELD INVESTIGATION .............................................. 4


I   2.1   SITE EVALUATION OF SWMUs 193 AND 194 ....................................... S

                2.1.1       Geophysical Surveys .................................................. S
                2.1.2       Cone Penetrometer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. S
I               2.1.3       GeoProbe ............................................................ 7

    2.2   GROUNDWATER MONITORING PHASE IV INVESTIGATION ....................... 7
I               2.2.1       Transect Corridors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8
                2.2.2       Dual-Wall Reverse Circulation Drilling ................................... 8
I               2.2.3
                2.2.4
                            Water Sampling ...................................................... 8
                            Borehole Geophysics ................................................. 10
                2.2.5       Monitoring Wells .................................................... 10
I   2.3   DEPARTURES FROM THE FIELD SAMPLING PLAN ............................... 11


I               2.3.1
                2.3.2
                          Site Evaluation of SWMUs 193 and 194 .................................. 11
                          Groundwater Monitoring Phase IV Investigation .. . . . . . . . . . . . . . . . . . . . . . . .. 12


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                                                                        iii
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I                                                             CONTENTS (Continued)

       3. IMPLICATIONS OF INVESTIGATIONS TO SITE CONCEPTUAL MODEL . . . . . . . . . . . . .. 13 .
I            3.1    SITE GEOLOGY ................................................ ; ......... ; 13

,I                   3.1.1
                   . 3.1.2
                                  Upper Continental Deposits ...................... ;....................
                                  Lower Continental Deposits .......................... ,........ ',' , .......
                                                                                                                                                                13
                                                                                                                                                                16
                     3.1.3        Porters Creek Clay.· ... '..........' ............... '.. '.. '.' . . . . . . . . . . . . . . ..                              16
-I,                 ,3.1.4        McNairy ...... ~.' ............... ','.' ............... ~' ............... ; ...                                             16 '.

       3.2 SITE HYDROGEOLOGY ....... " ........... ,': ........ ;' ... : . . . . . . • . . . . . . . . . . . . . .. 17

 I                  3.2~1    . Upper Continental Recharge System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
                     3.2.2 ,Terrace .' . . . . . . . . . . ... . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
                                                                                                                                                                17
                                                                                                                                                                20

 I                   3~2.3 '. Regional Gravel Aquifer ..............................................
                   . 3.2.4 McNairy .... :,.' . " .... '. :. , ......... '..•........ .' ... : ..' . . . . . . . . . . . . . . ..
                                                                                                                                                                20
                                                                                                                                                                21


 I     4.    RESuLTS OF: THE NORTHEAST PLUME INVESTIGATION .......•.................. 22

            4.1     SOURCES ASSOCIATED'WITHCONSTRUcnON STAGING AREAS ........... 22

 I                  4.1.1 .. Truck Wash and 'FillingStation ............ : .. ; ........................
                    4.1.2'        D.....n
                                  and Tank Storage Area .............. ~; .................. ~ ......
                                                                                                                                                                22
                                                                                                                                                                22
                    4~1.3
 I                           MiUwrightShorJ ' ....... ; ........ : . : ............... : ..................
                    4.1.4 . KeUoggLeach 'Field .... > ,' .. ; ...... : . . . . . . . . . . . . . .. . . . . . . . . . . . .. ..
                                                         ....
                    4.1.5 Other ··Facilities ...... ; ................. '.' .............'. . . . . . . . . . . . . . . . ..
                                                                                                                                                                25
                                                                                                                                                                25
                                                                                                                                                                25

 I          4.2
                                                       .




                                                              ."
                                                                       '

                    AREAS OF GREATEST CONTAMINATION .................................. 25
                                  .
                                                                                                                   .




                    4.2.1 C-340,Area ........ ' ...... '." .................. '............... '........... " 35
 I                  4.2~2 'switchyards ............... : .. , .•.... : ... '............................. ; ,35
                    4.2.3 C-1!l0'Area ..... , .... : ...................... ; ......................... 35
                    4.2.4 C-400 Area ..... :., '..•...........'. : .... '... " . . . . . ... . . . . . .. . . . . . . . . . . . . . . .. 35
 I'                 4.2.5 Northwest Area' ":' .." .'; ......... '.............. '..... ; •..................... 38
                    4~2.6OtherAreasofConcem ..................... : ...... ; i . . . . . . . . . . . . . . . . . . . . 38

 I'         4.3     HORizONTALANDVERl1CALEXTENT OF CONTAMINATION. '............. 38

                    4.3.1 Regional Gravel Aquifer ... ,'''' ........ ~ ............. '............ " ...... 38
 I                                                         ....... '" .:. '.' .......... ; ........... '•.... '; .. ':' .' ... 45'
                    4.3.2 McNairy ................ ' ..... "

            4.4     SIGNIFICANCE OF MCNAIRY FORMATION LEviNGS MEMBER .............. 48 .
':1:
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                                                                                 iv
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 I                                          CONTENTS (Continued)

      5. CONCLUSIONS ............. ....................................................... 48
 I         5.1.   VERTICAL AND HORIZONTAL EXTENT OF CONTAMINATION .............                          48
           5.2    IDENTIFICATION OF SOURCE AREAS .............. ~ .......................                49
 I         5.3
           5.4
                  RELATIONSmp OF MCNAIRY TO REGIONAL GRAVEL AQUIFER .......,: ...
                  NEW AND REMAINING DATA GAPS ........................... ~ .. ...........
                                                                                                         49
                                                                                                         49

 I    ACKNOWLEDGMENTS .; ................ '~. ;'. :.... , .. '. .:.................................. ; .. 51

      REFERENCES ,., ~ .;'... '..................... '.. '; ........ , .. ; ............................ 53
 ,I   BIBLIOGRAPHY ... ; .............................. '. .·....................................... 55


 I    Appendix A
      Appendix B ..
                        • SITE ,EVALUATION OF SWMUs 193 AND 194 .. : ....................... Al
                           GROUNDWATER MONITORING PHASE IV INVESTIGATION .......... B1.
      AppendixC        ,'. :~SlJLTSOF ANALYSES ...................... '....................... . C1
 It   AppendixD
      AppendixE
                         .J   •               •



                       ,;.BORINGLOGS ................ '.......................................... D1
                       . POTENTIOMETRIC:MAPS ........ :........................... ~ ....... E1
      AppendixF            MAPS ANDCROSS-:SECI10NS ..... :., ................................. ,Fl

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                     VI




I '
I
                                                         LIST OF TABLES AND FIGURES


       Tables

         1   Water Samples Collected by Horizon and Method ................. ; ................... 10'
         2.  Groundwater Monitoring Phase IV Well Locations and Monitored Formations ........... 11
         3   Water Samples From the McNairy in Boring P4F8 ....... , ............................ 12
         4   Maxilnum Concentration of TCE Accessory and Degradation 'Products Detected in the       '
             RGA during the Groundwater Monitoring Phase IV Investigation ...................... 39
         5 ' "Tc Detected Below the RGA .... :................................................. 45


 I     B-1 Groundwater Monitoring Phase IV Investigation Borehole Summary .................... B6
       B-2 So~d Waste DrUm Record ........................................................ B13


 I     Fipres


·1       1
         2
                Location ofthe Paducah 'Gaseous Diffusion Plant ...................................... 2
                Location of Characterization Projects Identified in the Interim Corrective Measures
                Work Plan for the Northeast Pluine ............... ',' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3

 I      3 Location Map for Site EvaluatioD'ofSWMUs 193 and 194 ............................... 6
        4 Location Map for Groundwater Monitoring Phai~e IV Investigation Borings ............... 9
        5 Stratigraphic ColUmn of the JackSon Purchase Region .. '. . . . . . . . . . . . . . .. . . . . . . .. . . . . . .. 14
        6 Conceptual DiagramoftheGeology aUh(fPaducah GaSeous Diffusion Plant . . . . . . . . . . . . .. 15
        7 McNairy TCE Contamination at Groundwater Monitoring Phase IV Investigation
                BoringP4DIO ... '.' .. '.......•.......,........•.. ,:, ........•........................... 18
        8 Conceptual Diagram of-the Hydrogeology at thePaducaih Gaseous Diffusion Plant . . . . . . . .. 19
        9 .Plan Vi~w Depicting EM61 'Survey Results of SWMU 193, ,Truck Wash and
          , '. Filling:Station Area . . . . . . . . . . . . . . . . . . . . . . ... . . . .. . . . . . .. . . . . . . . . . . . ... . . . . . . . . . . . . .. 23
       10 Plan View Depicting EM61 SurVey ResultS of SWMU 193, Drum and Tank Storage Area . .. 24
I      11 Former Kellogg Building and Septic System .................. ~ ................ '....... 26
      ,12 Location Map for Contaminant'Cross-Sections .... ... . . . . . . . . . . .. . . . . . . .. . . . .. . .. . . .. 27
       13 ' Cross-Section:A-A': Interpretation of TCE Contaminant Distribution in,the Regional.
I               GravelAquifer ...... :.' ...... ,., ........... : ....................... ,... ,~ .. . . . . . . .. 28
       14 Cross-Section,A~A': Inte..pretation,of"TcContaminantDistribution hi the Regional
                Gravel:Aquifer .,..... : ~ .......... '.' ......' .......... ',' : ...... : ........•... ; .......... 29
:1,    15 Cross-Section B-B': InterpretationofTCE Contaminant Distribution in the Regioilal
                GravelAquifer ......... : .............•.... ',' '. , . '...... , .. " .... , .............~ . . . . . .. 30

:1     16 Cross-SectionB-B': Interpretation,of"TcContaininant Distribution in the Regional
                Gravel Aquifer ..•............ ~ .. : ....' ................ '... ,,' ... : ............. ~.. . . . .. 31
       11 . Cross!'Section C-C': 'Interpretation ofTCE-Contaminant Distribution in the Regional
                Gravel Aquifer " .... " . '.' .. '.' .' ....... ; : .... '..... " .... '....... '..... '" ...... '. . . . . . . . . . . .. 32
il     18 Cross.;SectionC!'C': Interpretation of"Tc Contaminant Distribution in the Regional
                Gravell Aquifer' : ...........•.... '.. ; ..... '. ',' .. '...... '..... '.., ...... '.................... 33
       19 Cross..Section D-D': Interpretation of TCE ContamiDantDistribution in the Regional
il             'Gravel A' 0 1 . ' ,
                         qw.er...................................... . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . ,34
       20 Interpretation ofMaximum "Ie Contamination in.the Regional Gravel Aquifer .......... , 36.
       21 Interpret8tionofMaximum TCE Contamination in the Regional Gravel Aquifer ..... , .... 37
       12 Maximum TCE Concentrations at the Top of the Regional Gravel Aquifer ................ 43

                                                                                 vii
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I                                 LIST OF TABLES AND FIGURES (cont.)

    23   Maximum TCE Concentration at the Bottom of the Regional Gravel Aquifer . . . . . . . . . . . . ..   44
I   24   Contaminant Concentration in Existing Monitoring Wells Screened in the Top of the
         Regional Gravel Aquifer Compared to Investigation Borings Drilled Deeper ... . . . . . . . . . ..   46
    25   Maximum TCE Detected Below the Regional Gravel Aquifer ...........................                  47
I   A1
    81
         Cone Penetrometer Tip With Electronic Sensor and Water Sampling Device ..............
         Diagram of Dual-Wall Reverse Circulation Drilling Method. (Driscoll, 1987) ..............
                                                                                                             AS
                                                                                                             B3
    E1   Groundwater Flow Direction Measured by the Colloidal Borescope Compared With the
I        July 1993 Potentiometric Surface (Kearl, 1993) ......................................               E2



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        ix
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 I                                              ACRONYMS


 I          BTEX
            CERCLA
                        benzene, toluene, ethylbenzene, and xylene'
                        Comprehensive Environmental Response~ Compensation, and Liability Act'
            DCA         dichloroethane                          '                     ,
'I          DeE
            DNAPL
                        dichloroethene
                        dense nonaqueous phase liquid
                        Department of Energy ,
            DOE
  I         ECD
           'EPA
                       ,electron capture detector
                        Environmental Protection Agency ,
            ER          Environmental Restoration

  I         ERWM
            FSP
            GC
                     " Environmental Restoration and Waste Management
                      , Field Sampling Pl~' " ,
                        gas chromatograph ,                '
                                                                  \


  I         MMES
            NEPA
            PIO
                        Martin Marietta Eitergy Systems. Inc.
                        National Environmental PoliCY Act
                        pho~ionization 'detector
            PCB         polychlorinated biphenyl
  I         PGDP
            RCRA
                        Paducah Gaseous Diffusion Plant
                        Resource 'Conservation1and Recovery Act
            RGA         regional gravel :aquifer         '
  I         SWMU
            99'fc
                        solid waste managemenrunit
                      technetium-99

':1         TeA
            TCE
            TPH
                      trichloroethane
                      trichloroethene
                      total :petroleUni hydrocarbons
            UCRS      upper continental recharge system
  I         VOA
            VOC
                      volatile organic analysis
                      volatile ,organic, compound
          ,WAG        waste ,area grouping
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                                                      x




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                   xi
·'1
  I                                                        PREFACE


  I             This Northeast Plume Preliminary Characterization Suinmary Report for the. Paducah Gaseous Diffusion
           Plant (DOE/ORl07-1339 & D2) was prepared in accordance with. requirements ,under the Comprehensive
           Environmental Response, Compensation, and Liability Act (CERCLA) and .the Resource Conservation and
  I        Recovery Act (RCRA) for repOrting the.results of a siu, characterization fOf'publicreview. This work was
           performed under Work Breakdown Structure 1.4:12.7.1.11.01.0'11 (Activity Data Sheet 5311~ "Groundwater
          .Program").. Publication of this· document meets an Iriterim,Co]J"eCtive Measures Work Plan milestone of
     I.    April 7, 1995, which was extended to July 28,.1995 to allow for additional regwatoI}' review. This document
           provides the Enviioomerttal Restoration 'Program Withinfohnation·aboutthe results of both the Site Evaluation
           of Solid Waste Management Units (SWMUs)'193 and 194 and the Groundwater Phase IV Investigation
'1'        performed at, the' Paducah Gaseous Diffusion Plant.: It. mcludes information on the nature and,extent of
           contamination contained within the Northeast Plume. Informationinthisreportwas~ed' in DOE/ORl06-1318
           &. DO, Tecluiical Memorandum for Interim Remediat Action ofthe Northeast Plume at the Paducah Gaseous

 I         Diffusion Plant, Paducah, Kentucky.                                                                  .      •



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I                                                EXECUTIVE SUMMARY


1           The Janumy 1994 Interim Corrective Measures Work Plan for the Northeast Plume (Martin Marietta' Energy
      Systems, Inc. [MMES], 1994) called for data gaps to be addressed before technically supported or justifiable
      corrective measures could be proposed for the Northeast Plume. The Northeast Plume Investigation, composed
I     of the Site Evaluation of Solid Waste Management UIiits(SWMUs) 193 and 194 and the Groundwater
      Monitoring Phase IV Investigation, addressed contaminant distribution!and source zone identification. To reduce
      both costs and waste generation, the investigation employed methods of subsurface investigation new to the site
I     and applied the observational approach to gain the most information possible. Installation of 76 temporary
      borings~'9 monitoring wells, and 1 piezometer resulted in the collection of 84 soil samples and approximately
      285 groundwater samples, plus quality assurance samples.

I          The Northeast Plume is an area of contamination containing smaller, commingled plumes from different
      sources. ResuItsofthe 1989 to 1991 Comprehensive EovironmentalResponse, Compensation, and Liability Act
'I    (CERCLA) Site Investigation indicated three groundwater plumes extending northward from the Paducah
      Gaseous Diffusion Plant (pGDP): the Northwest Plume, the ~cPlume, and the Northeast Plume (CH2M Hill,
      1992). Before the Northeast Phone Investigation began, the CERCLA itivestigation defined the Northeast Plume

I     as extending' approximately 2.4 kilometers (1.5 miles) from the PGDP security fence with an area of
      approximately 314 hectares (1.2 square miles). Results from the Northeast Plume Investigation identified several
      potential source zones and high concentration areas. The most notable are in the vicinity of a former millwright
      shop, the Kellogg leach field, and at least three·high contamination areas west of the C-400 building.
1           Abmied rivet terrace in the Porters Creek Clay defines the southern extent of the uppermost aquifer, known
      as the regional gravelaquifer (RGA), and the southeastern boundary of contamination. Analysis of groundwater
I     data suggests that the northennnost, downgradientextent ofth~ Northeast Plume complex is 2.4 kilometers (1.5
      miles) from the plant security fence. Inarea,the;plUIilecovers approximately, 259:hecta1'es (1 square mile)
      outside the plant security fence. Inaccessibility to drilling equipment prevented complete. delineation of the
I     northwestern boundary of the northeast area of contamiriation. '.                        .

             The Northeast Plume Investigation yielded valuable knowledgCabout contaminant distribution within the
       lower continental deposits. Analytical results showed trichloroethene (TCE) concentrations at the top of the lower
      .continental deposits were often lower than those at the bottom. In addition, significant TCE contamination was
       detected for the first time-in the McNairy Formation. However, this contamina~on.seems limi~.for the most·
       part to isolated sand and gravel lenses at the top of the McNairy that are in 'directcontacf with overlying
       permeable deposits in· the lower continental deposits. These sand and gravellensesredet'inCd the  RGA to include
       the upper portion of the McNairy where these lenses are in contact with,the lower continental deposits. Sands
       of the upper continental deposits in direct contact with the lower continental depositS were also ihcluded in the
       new definition of the RGA. The vertical distribution ofTCE in the RGA suggests that while someTCE is present
       throughout the RGA, moSt of the TCE,may'be near the base of the RGA. Finally, TCEcoritamination from the
       C-400 area, originally believed to be the major contributor to the Northeast PIUme,appears instead, to be one of
       the primmy sources for the Northwest Plum,eas well as one of several sources for the Northeast Plume complex.




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    I                                                1. INTRODUCfION


          1.1 BACKGROUND

          1.1.1 Site

                The paducah Gaseous Diffusion Plant (pGDP), owned by the Department of Energy (DOE) and leased by
          the United States Enrichment Corporation, is located near Paducah, Kentucky (Figure 1). Constructed between'
          1951 and 1955 by th~ United States Atomic Energy Commission, PGDP enriches uranium using the gaseous
          diffusion process for commercial nuclear power reactors. .

          1.1.2 Groundwater Contamination

               Past operating activities at PGDP inadvertently contaminated groundwater in the uppermost aquifer at
          PGDP, the regional gravel aquifer (RGA), as well as the upper continental recharge system (UCRS) overlying
          the RGA and some permeable zones in the upper portion of the underlying McNairy Formation. The two primary
          groundwater contaminants beyondPGDP's security fence are trichloroethene (TCE) and the radioisotope
          technetium-99 (»rc). Secondary contaminants include carbon tetrachloride and the following TCE degradation
          products: cis-l;2-dichloroethene (DCE), I,I-DCE, and 1,1,I-trichloroethane (TCA). On-site groundwater
          contaminants include other organic chemicals common to industrial facilities.

    I          The results of the 1989 to 1991 Comprehensive Environmental Response, Compensation, and Liability Act
          (CERCLA) Site Investigation (CH2M Hill, 1992) andfurther investigation during the Groundwater Monitoring
          Phase ill Project (Clausen et al., 1992b) indic~ted<three groundwater plumes extending northward fromPGDP:
    I     the Northwest Plume, the 99]'cPlume, and.the Northeast Plume. Before the Northeast Plume Investigation began,
          the Northeast Plume was defined as extending approximately 2.4 kilometers (1.5 miles) from thePGDP security
          fence with an area of approximately 314 hectares (1.2 square miles). The two other groundwater plumes, the
    I     Northwest Plume and the 99fc Plume, are discussed in more detail in the Final Report on Drive-POint
          Characterization ofthe Northwest Plume at the Paducah Gaseous Diffusion Plant (Chlusenet al., 1994).

    I     1.1.3 Regulatory Framework

                Thelnterim Corrective Measures Work Plan for the Northeast Plume subniittedin January 1994 (MMES,
    I     1994b) called for specific data gaps to be addressed before technically supported or justifiable corrective
          measures could be proposed for the Northeast Plume; These data, gaps pertain to the areas of Contaminant
          distribution,.source area identification,andhydraulic contm,nment design parameters. Four projects directly
    I     address these data gaps for the NortheastPlume: (i)the Groundwater Monitoring PhaseNInvestigation,
          (2) the Site Evaluation of Solid Waste Management Units' (SWMUs) 193 and, 194, (3) the Colloidal Borescope
          Project (Kearl, 1993), and (4) the Interim Records of Decision (lROD) for .the Northwest. Plume (Science

    I     Applications International Corporation :[SAlC], 1993a). The Groundwater Monitoring Phase IV Investigation,
          the Site Evaluation of SWMUs 193 and 194,.and the Colloidal Borescope Project composed the characterization
          of the NortheaSt Plume.. 'The IROD for the Nonhwest PlUme will influence design ofa treatntent system for the

    I,    plume. Figure 2.shows the areas involved in the characterization projects.                .

                The Interim Corrective Measures Work Plan {MMES, 1994b) proposed two secondary documents for

    I,'   submission to the Environmental Protection AgenCy (EPA) and the Commonwealth of Kentucky. DOE submitted
          the first of these, the Field Sampling Plan for the Northeast Plume, in February 1994 (MMES, 1994a). This

                                                                1
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                                                                                                                                                                                                             ~~U~~ NORTH
                                                                  •
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til                                                                                     Monitoring Wells Used for the
l     f n ~ ...  0
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:g
      ., a ~n
      0-                                                      JIWjJ                     Area of the Site Evaluation of
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                                                                                        SWMUs 193 and 194 (Figure 3.)

                 .: -
      1::1"
      til              ~ ~                                                              Areas of the Groundwater
                             ~                                                          Monitoring Phase IV Investigation
                 :     I:S
                 III
                 ij
                    Gi...                                                               (Flaure 4.)
                       til
                             0-                                                                                                                                                        1/4           1/2   l4i1e
                 III                                                                    PGDP Boundary
                 III         I:S
                                                                                                                                                                                        I             I
                                                                                        DOE Bound                                                                                 looo'Feet
I
I                                                               4

        document described the scope of activities for both the Site Evaluation of SWMUs 193 and 194 and the
I       Groundwater Monitoring Phase IV Investigation to expedite approvals and avoid field schedule delays. The Field
        Sampling Plan was approved in March 1994. This Preliminary Characterization SummmyReport, the second
        proposed dOcument; has been prepared upon completion of the two-phased "Northeast Plume'" field investigation
I       and deals primarily with the results of that investigation. This ·report serves as a.link'between the investigation
        and the Record ·of Decision for Interim Remedial Action signed on June 15, 1995. The Preliminmy
     '. Characterization, Summmy Report presents the technical.dataandinterpretations supporting the mterim remedial
,I      action.

       1.1.4 Report Scope

I          This report will deal in depth with the Site E~aluationof SWMUs 193 and 194 and'the Groundwater
       Monitoring Phase IV Investigation, known jointly as the Northeast Plume Investigati~. The goal of the

I      Northeast Plume Investigation was to fill data gaps identified in the Interim Corrective Measures Work Plari
       (MMES, 1994b). Specific objectives were to:


I      1.   Identify additional possible sources of contamination associated with staging areas used during plant .
            construction.

       2.   Locate areas of greatest contamination.
I      3.    Characterize further the vertical and horizontal extent.of contamination.

I      4.   Determine the significance of the McNairy Formation Levings Member.

            The project methods mid departures from the FieldrSampling Plan will be .described in Section 2, "Methods
I      of Investigation," and the results wiu be discussed in Section 4,. "Result of the Northeast Plume Investigation."
       For breviW and c1ariW in reading, field methods for the Site Evaluation of sWMUs '193 and 194, field methods
       for Groundwater Monitoring Phase IV Investigation, and analytical data have been placed in Appendices A, B,
I      and C, respectively.                                                                                       .

           . A data gap ideDtified in the Interim Corrective Measures Work Plan was the discrepancy betWeen the
I     observed plume distribution withihe computer modeled flow directions and potentiometric maps. The Colloidal
      Borescope Project, completed in July 1993,measured the direction,()f groundwater movement in monitoring
      wells located within and near the Northeast Plume complex. The results of that study, presented in Colloidal

I     Borescope Investigation at Paducah ,Gaseous Dijfoston Plant (Kear~ 1993), will be noted as appropriate during
      the disCussion of the Northeast Plume Investigation. . '                                         .


I                                      2. METHODS OF FIELD INVESTIGATION


I             To accomPlish the Northeast Plume Investigation objectives, a two-phased field effort lasted from March
         16,1994 until final demobilization on December 15, 1994, The first phase was in support of Site Evaluation
         ofSWMUs 193 and 194. It involved surface geophysics to learn if buried material existed and a shallow
I        subsurface investigation of probable source areas. The second phase, in support of the Groundwater Monitoring
      .' Phase IV Investigation, used borehole transects to better defme the plume boundaries, both' areally and vertically,

I
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I                                                             5

     and geophysical logging of boreholes to correlate:geology of the investigation area. Integration of the two field
I    phases to meet the project objectives was as follows.

     2.1 SITE EVALUATION OFSWMUs 193 AND 194
I         The purpose of the Site Evaluation of SWMUs 193and 194 was to identify possible sources of
     contamination associated with some of the staging areas utilized during plant construction (Figure 3). These
I    areas represent potential source areas for the Northeast Plume; Drawings by F. H. McGraw&: Company
     (McGraw), prime· contractors for construction,ofPODP, were reviewed in,great detail during an'environmental
     audit conducted in 1993 (SAle, 1993b). These drawings, dated as early as 1952, contained the layout of

I    construction ~tagiDg areas that no longer exist.

           Interviews with current and former PODP and'McGraw employees suggested thatTCE was commonly used.

I    during plant construction. The activities associated with the staging areas located in SWMUs 193 and 194
     (Figure 3) seemed geafed toward the fabrication and assembly of plant equipment. ' Large quantities of degreasing
     and cleaning agents were typically used during this type of construction., Based on .thedrawing review and

I    interviews, it was suspected that these staging areas, SWMUs 193 and 194, could be a source for the Northeast
     Plume. '

     2.1.1 Geophysical Surveys
I         Personnel from the Grand Junction Office of the Oak Ridge National Laboratory (Grand Junction) used a
     Geonics EM61 trailer-mounted electromagnetometerto do surface geophysical surveys at two sites within
I    SWMU 193 to locate possible buried objects. Surveyed sites included arormer truck wash and filling station,'
     and a former drum and tank storage area (Figure 3). Control grids were established at each survey        area:
     46 meters by 61 meters (150 feet by 200 feet}for thefruck wash and filling statio~ mid 61 meters by 229 meters
I    (200 feet by 750 feet) for the dnnn anditank storage area. Results from these surveys, discussed in Sections 4.1.1
     and 4.1.2, aided in placing three boreholes.                                                  ' .     "           ,

I    2.1.2 Cone Penetrometer

           Personnelftom Grand Junction and the Baltimore, Maryland, Office of Earth Engineering and Sciences used
I    a cone penetronreter rig to generate electronic logs for lithology. They also collected soil and water samples from
     28 borehole location (FigureJ) in SWMUs 193 and 194, pushing the cone penetrometer sensor to refusal at each
     location. As. the sensor passed ,through the sediment, it generated an' electronic lithology log. Appendix D
I    contains a graphical representation of the soil profile from each· location, along with the borehole. log sheets for
     the project.           '


I         Soil samples were collected from each boring at 1.5,3, and 4.6 meters (5,10, and 15 feet) from ground
     surface andimalyzed' for at least one of the following compounds: TCE, 1,2-DCE, benzene, toluene,
     ethyIbenzene,;and'xylene (BTEX), total; petroleum hydrocarbons (TPH); polychlorinated biphenyl (PCB), gross

I    alpha and beta activities, 'l~ chromi~andcadmium. The Field,sampling Plan for the Northeast Plume
     (MMES, 1994a) lists target.compounds for each boring location~ Section 2.3.1 points out deviatiollSfromthe
     Field Sampling Plan. 1llesecompounds reflect thetypes10f activities associated With the,staging.areas, based

,I   on interviews with former McGraw employees and others who were familiar with the areas. Radioisotope
     analyses were conducted toidenti1Ypossible contamination associated with the area's current use, storage,ofUF6
     cylinders.                           '

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         11&-1
            .............
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    1"-1
              Noribeut pa- SampUua LooatloD
              (101l eample ODJ,J)


I    •
    Plua      1bIIstbaI·...

     •
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     Figure 3. Location Map for Site Evaluation of SWMUs 193 and 194.
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I                                                             7

           A total of 11 attempts were made at 4 SWMU 193 locations and all 7 SWMU 194 locations to collect water
I    samples with the cone penetrometer. Only one attempt yielded sufficient water for analysis. Hydraulicconditions
     at these sites (Section 3.2.1), and the cone penetrometer's inability to drive deeply, resulted in the low sample
     recovery rate. Since analysis of water samples was necessary for complete characterization of the SWMU .193
I:   and 194 areas, an alternate method for. collecting those samples was needed. A GeoProbe rig already at the
                        a
     Paducah site from previous investigation provided thealteina~ methodtolcontiiluethe water sampling.

:1   2.1.3 GeoProbe

            The GeoProbe used a truck-mounted hydraulic system to drive one-inch rods·and sampling tools into the

I     groUnd A hydraulichainmer mounted on the rig, enabled the rig to exert greater penetration force than the cone
      penetrometer to penetrate hard sediments. The GeoProberig, generally.able to drive the sampler between one
      and three meters (fivc,andfifteenfeet)beYond the cone·penetrometer refusal depth, successfully obtained several
      water sampleS. H~eyer, very slow groundwater recharge, only allowed collection of enough water for volatile
I    .organic Cotnpotmd (VOC) samples and field parmileters (PH, temperature, and:eonductivity) within a reasonable
      amoUnt-of time. The limited water ,volumes prevented analyses for TPH, gross alpha and beta activity,·lead,.
;1    chromiWtl; and cadmium. These.compounds, potential contaminants attributable to the staging areas, 'Ne,te not·
      contaminants of concern for the Northeast Plume. (Gross alpha and beta activities were measured in. the
      Northeast Plume Investigation;· however, the .construction staging areDs predated PGDPuse. of radioactive
      substances.) After collection of 15 water. samples, ,using both the geoprobeand the conepenetrometet from 14
 I
                                                                       1


      locations Within the SMWU 193 area,the.investigationteamceased watersampling,efforts. Based on field
      results, the remainitigholeswere' upgradient of    any.   suspec~ contamin8tion source. areas,andhydraulic

'1    conditions limited the effectiveness of the efforts. ..

                                      .                           .
                                                                                            .       .


     2.2 GROUNDWATER MONITORING PHASE IV INVESTIGATION
 I       The pmpose of the Groundwater MonitOring Phase IV IDvestigatlon was to better delineate the Northeast
     Plume identified during the 1989 to 1991 CERCLA· Site Investigation. ·The investigation incorporated several
 I   methodologies that worked together to improve project effectiveness. Major elements include:

     1.   Establishment of. continuous drilling corridors coincidental to off-site borehole transects to simplify
:1        National :Environmental Policy Act (NEPA) approval of dfilling lOcations..
                        .                                                    . .
                                                                                           .

     2.   Use of dual-wall reverse circulation drilling technology to providejmproved sample depth selection, and
·1        reduce drilling time, waste generation, andpossible:cross-contamination,

     3.   Use ofmonitoring well sampling methods to improve quality ofgroundwatCrsamples collected from soil

1,
.    4.
          borings and a field gaS cbi'omatograph to provide rapid analytical results .

          Use of borehole geopllysicallogs to improve geologic interpretations~

:1   5.   Use of iemporarycharacterization borings to improve selection of monitOring well locations and screen
          depths and· reduce project costs.

I    The following sections describe each of these aspects.


I'
I
                                                                  8

        2.2.1 Transect Corridors
1              Designed for horizontal and vertical characterization, the Groundwater Monitoring Phase IV·Investigation ,
        used eight ,borehole transects placed across the width of the' area of contiumnation to dissect the Northeast Plume
1       (Figure '4). The four oft'~site transects, defined as continuous corridors for NEPA evalUation, allowed flexibility
        in bormg location placement. Delineation of sensitive areas left the remainder of the corridor available for
        investigation activities. Spacing between on~site:transects was,approximately 305. meters {1000 feet) while oft'- '
1     , site,transectsfollowed avaiIable roadways to,reduce·the project's, impact to the environment and private ,property,
        thus spacing was necessarily wider. Field adjustments in'response to obstacles such as power lines, underground
        utilities, buildings, and results from other borings" altered the initial boring spacing of approXimately 150 meters

1      (500 feet) within each ,transect. Forty-eightborings were drilled to an average dePthof46 meters (150 feet).

       2.2.2 DUal-Wall Reverse Circulation Drilling

1              A team consisting ofpersonnel from PODP's Environmental Restoration Division, Grand Junction, and the
        Milwaukee, Wisconsin, office of Layne-Nortbwest, drilled and sampled48 investigation borings to a depth of
        approximately 46 meters (150 feet) (p4F8    was   to 107 meters [350 feet]). Collection of groundwater samples '
:1.     from these borings further delineated ,a groWldwatef contaminant plume emanating from the northeast ,side of
        PODP. Dual-waIl reverse circulation drilling was chosen as: the method for the Groundwater Monitoring,Phase
        IV Investigation. The method provided fast and efficient drilling and allowed, continuous 'monitoring'of formation
1       samples, ,selection ofwater sample intervals, based onactuaI :geologic conditions, geophysical logging inside the
        drill tube, and reduced probabilitY of Cross-contamination within the borehole. An added featUre was .the
       ,capability to insta1I"a temporary isolation.casmg,(orovershot).when the.risk of cross-contamination appeared
        significant. Actual field eXPerience indicated ,that the overshot was unnecessary for most operations. The
        method, when coupled with a solids separation system, also significantly reduced drill cutting volumes coinpared
       'to conventional auger drilling; Appendix BiCOOtains additional information on dual-wall reverse circulation
        drilling.                                               .       '                                       '

       ,2.2.3 Water Sampling
          '.   .    . '         _.                        :   . . ..   .   .                              .



1             PGDP'sEnvironmental,Restoration Division GroUndwater Monitoring Section conducted water sampling
        for the project using thesame:eqUipment,bladder pmnps and in-line flow cells, which is routinely used to sample
        monitoring wells: The team'co1Iected water samples from the, tOp, middle, arid bottom of the aOA and fromthe
1       upper portion of the McNaiIy ,Formation. They also collected water samplesfrom.the UCRS .inside the .plantand
        ontransects~ C:::and'D, wh~ possible. When there was insufficient wateriit the ;borehole to:operate a pump or
        flowing sands 'were encountered, a hailer was used to .collect a sample. Approximately 270 sets' ofgroundwater
,I      samples, not mcluding quality assurance samples, were collected4uring the investigation. Table.! provides:a
        summary ofwaterisampIing'by'horizonandoinethod.6tand Junctionpersonnel'used.a field gas chromatograph
        (Ge) set up ·ina mobile lab to analyze:the samples for TeE and' related organics:(l~I-DCE, trans-DCE, .cis-DCE, . .
        1,1,I-:TCA,.andcarbOn·tetrachloride). ThePGDPlab.·analyzedisamples-for'~c, gross alpha, and: gross ,beta and .
1     . provided organic analyseson·selected.samplesfor'quali~ control.. AnaIyticalresults from· 'the CERCLASite .
        Investigation,and'eXisting monitoring weIis:defined· the'cOntaminantS of concern for this investigation. Borings
        located'ii18reas,suspectedofhavillg contaminants·not normally, associated with the Northeast Plume added other
1       analyses, sUch as transuranies" to 'the anaIyteli~ ~gainadditional information about that loCation. TheresUlts
        of the groundwater analyses are presented'in AppendixC.
                                               ,                 -

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                       ~
     ID
     It

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                                           .&    Groundwater Monitoring Phase IV
                                                 Investigation Borings                                     ~I\               2rJr-
 [
                                            •
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 E         0
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     t$
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                                           w;m
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                                                 On-site Transects
                                                                                   E=:::::;::tl===:=]1
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                                                                                       1000 Feet
  I
  I                                                            10


  I                            Table 1. Water Samples Collected by Horizon and Method.

                          Horizon                                                         Samples Collected
':1                                                       Samples Attenipf:ed
                                                                             "



                                                                                       Pumped            Bailed
       Upper Continental Recharge System' ,                                25                3               14
  I    Terrace Gravels                                                      2                1                1
       Regional Gravel Aquifer (redefined)                                160             138               20
  I    McNairy Formation                                                   95             ' 61               34

  I    Mississippian
       Total                                                             283
                                                                            1
                                                                                          203               70
                                                                                                              1



  I   2.2.4 Borehole Geophysics

  I          GeophysiCal logs were run in 47 of the 48,boreholes; Initially, logs included gamma ray, neutron, and
      density. Thedensiiylogging was dropped early in the ,investigation due ,to data qwility problems resulting 'from
      sig'nal attenuation by the dual-wall drill pipe and the. decision to discontinue use of the overshot casing. Lack of
  I   the density log did not significantly affect data interpretation, The gamma and neutron logs provided an excellent
      meaDs ofcorrelating geology, both between formations and within the 'same formation. Appendix D contains
      geophysical logs generated from the boriDgs; Theselogs also,show'lithologyiilformation, water sample depths,
  I   and analytical results."                                         ' "

      2.2.5 Monitoring Wells
  I         Completion of the characterization borings simplifiCd,thestrategic placement of nine monitoring wells nellI"
      theloc8tion of bOrings drilled in the investigation. The·characterization borings allOWed wells to be placed and
      screen iirtetvalsto be selected to achieve sPecific .goals. Wells were installed to monitor contaminant migration:
  I   in critical areas, toconfirmcharacierization results,'and to serve as monitoring points for future anticipated
      remedial, actions. Table 2.lists the well identification associated'with the location of the investigation boring and

  I   the screened fonnatiOlL Monitoring wells MW254 and MW259,originally planned as McNairy wells, were not
      installed due toteehnical issues and projeCt budget constraints.


  I
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 :1
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             Table 2. Groundwater Monitoring Phase IV Well Locations and Monitored Formations.
 I          Well '         Phase IV        Screened        tCE(Jlg/L)   TCE(llg/L)     ,'Goru for Monitoring

.1         Number           BoriDg
                          'Location
                                           Interval'       oetectedin
                                                              Well
                                                                        Detected in,
                                                                        'Boring

II         MW252            'P4A3           Basal
                                            RGA
                                                       riot available      2.9J"       ' Contaminant migration
                                                                                       "at northernmost tip of
                                                                                                plume

 I·       -MW253            P4B4            Basal,
                                            RGA
                                                       not available'     ,302            Migration of high
                                                                                          concentration area',

 I,        MW255            P4E8            Basal
                                            RGA
                                                             1,100        1,480        ,'upgradient monitoring
                                                                                         of Kellogg leaCh'field


 I.        MW256            P4E6            Basal
                                            RGA
                                                              340          519          Upgradient monitoring
                                                                                        of Kellogg leach field

           MW257            P4GI2           Upper          , 6,000        2,028             Migration' of
I                                           RGA                                          cont8rninants from
                                                                                             C400area

I         MW258            P4DIO          ' Basal,
                                            RGA,
                                                             2,200       '1,225             Downgradient
                                                                                       , monitoring ofKellogg
                                                                                              leach field

I         MW260             P4E4            Basal
                                            RGA
                                                              760          812              Monitoring of
                                                                                        secondmyarea of high

 I·       MW261            P4G12            Basal           21,000        23,494
                                                                                            concentration

                                                                                            Migration of
                                            RGA                                          contalnin~ts from
I.                                                                                           C-400,area

          MW262            P4Gll            Basal           10,000        9,717             Migration of
I                                         , RGA                                          contaminmits<from
                                                                                             C-400 area'
           "J" indicates the concentration is estimated.
I
      2.3 DEPARTURES FROM THE FIELD SAMPLING PLAN
I     2.3.1 Site Evaluation ofSWMUs 193 and 194 "


I          Several departures from the Field Sampling Plan took place during Site Evaluation of SWMUs 193 and 194;
      They include the geophysical equipment used, placement of sample locations,' water sampling methods,' and
      analytical parameters.                                                                                   '

I
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 I                                                             12


,I        Ground penetrating radar was specified in the Field Sampling Plan as the most appropriate geophysical
     method for discerning buried drums and tanks. After contract proposals, it became clear that the EM61
     electromagnetic method for geophysical surveying was more appropriate. EM61 was used to conduct the
     geophysical surveys at SWMQ' 193 iDstead ofthe ground penetrating radar.
I          DuetotheresultsoftheEM61 survey, the sampling locatioils,for 193~2, 193-4, and 193-6 were relocated
     from that designated in the Field Sampling Plan. TheselocatioDs weremoved'inan attempt to'gatherthebest

I    data possible, Otherboritigs(193.;3, 193=7, and 194-4) were:ad$o relocated: from the originally planned locations
     in order to. accommodate physical access (such as ground. conditions, ,underground utilities, NEPA consideration,
     ~l                                                                             '
I         The method for taking watersainples was changed duringth~ course of'the investigation. When only 1
     sample location yielded water for analysis of II attempted with:the cone. penetrometer, a geoprobe rig was

'I   mobilized to collect the water samples. The .geoprobe rig. generally followed the cane penetrometer truck to take
     water samples after tbecone penetrometer had taken geophysical logs and soil samples.

           Overall, water samples were attempted froni 24 ofthe 28 locations. The 4 locations that were not attempted
I    (193-5, 193-:-9, 193-19, and 193-21lweredetermined,to be upgradient ofany potential contamination. Hydraulic
     conditions did not permit pmgingofthe probe before,collectinga water sample. A sufficient amount of water
     for VOC analyses was collected ftom 21 of the 24 locations attempted: A sufficientamount of water for metals,
I    gross :alpha, and gross beta analyses was not collected from any location.dW'ing this investigation. Of the 21
     locations where water was coll~ the Field' Sampling Plan: called for 5. ofthose locations to be analyzed for
     TPH. At 3 of those 5 locations (193-1, '193-4, and 193-17), the amount of water collected was insufficient to .
I    conduct TPH analyses.                                                   .

          In:addition, at two iocations, due to difficulty with ,sampling equipment, the. full analyte list for soil samples
I    was not complete. At location 193-12,TCA was not apalyzed from the IS-foot sample depth; and at 193-18,
     gross alpha and gross beta were not analyzed from the 10-foot sample depth.

I    1.3!1 Groundwater Monitoring.Phase IV Investigation

          Actual fieldoperatlons at'PODP and:the·fieldexperiences·ofGrand Junction and Layne-Northwest resulted

I    in departures from the program described in the Field Sampling Plan. These variations included use of the
     tempormy isolation casing (or overShot), coring, collecting of lithologic and water samples, logging, and
     placement of borings.                          .                      .

I         The overshot was used on the first ihreeborings plus two additional borings. Use ofthe overshot proved
     cumbersome, time consuming, and generated additional waste. A proposal was made'to drop the ,use of the

I    overshot,duringnorinaI, operations.. After reviewing the perfonnanceof the 'system, the proposal: was accepted·
     by the,state,and the:overshot.was not used during,thc're8t ofthc·project.

           Owing contract negotiations, LayIie-NOrthwest indicated that coring ,uSing the dua1~wall reverse,circulation
I    methodwascost1yaruhime-consuming. Based onthisiriformation, the coring was moved to the:monitoring well
     installation portion ofthe project. Due to funding constraints for that portion of thc:project,the cores were Used
     to veruyscreen depth and provide preliminary infonnation on grain sizes. ' During the investigation, the ,lithologic
I    sampling consisted of collecting and describing drill cuttings every five feeiand at major lithology changes. This
     was consistent with the Field S~pling Plan with the exception of the use of filter paper to line the sample .

I
I
I
I                                                          13

    catcher. The consistency of the samples was such that the. filter paper was not needed. The field geologists used
I   sample trays to keep samples and made comparisons between holes easy and useful.

          The water sampling procedw'e was modified,to eliminate the packer. Because of the high solids content in
I   the water immediately after drilling ceased. and problems with flowing very fine-grained sands in the McNairy
    Fonnation, the pump/packer combination experienced nmnerousproblems, A proposal was made to eliminate
    the packer, retain the bladderpurnP, and use the microj1urge sampling method. Aepmparison of miaIytical results
I   for water samples using the two methods was done on'three borin~, P4B3, P4D 12, and P4G2. After reviewing
    the results, the state agreed.to the change;


I         The logging program was modified when the overshot waS dropped from the drilling program. The density
    log WBS.Ottenuated toonnichto be useful when logging occurred'inside>'the drill tube. The neutron log, however,
    did yield acceptable results and its use was expanded to include nearly every'boring. This combination is now
    being recommended on all future investigations andmonitOringweUinstallations whenever feasible.
I         One major departure from.the Field S8mplingPlan, and perbapsthe most beneficial, was the final placement

I   of the investigation borings. In particular, the addition of borings P4G8, P4G9; P4G 11 and P4G 12, showing the
    connection between'the C-400 area and the Northwest Plwne,and P4F8, drilled 107 meters (350 ft) to the top
    of the Mississippian carbonates, yielded a wealth of unanticipated data. The final locations for the borings are
    shown in Figure 4 .. Table B-1 in AppeodixB provides the actual sample depths and logs run for each boring.
I        The final departure from the Field' S!ll1lplingPlan involves -the moDitoring well installation. After
    completion of the Field Sampling Plan, a review.ofcoStestimates showed that the investigation would require
I   a separate source of funding from the monitoring wells: Fixed and .limitedfimding for the wells required a
    reduction in project scope. Only nine wells undone piezeometer were installed. None of the 'wells penetrated the
    McNairy Formation and,the multiple interval' sampling:system.was eliminated; -
I
               3. IMPLICATIONS OF INVESTIGATIONS TO SITE CONCEPTUAL MODEL
I
    3.t SITE GEOLOGY
I         The Phase m Report covers regionatgeology for the area in depth. For reference, Figure 5 shows a
    stratigraphic column ofthe region and Figure.6 presents the concePtual geology of the site.

I   3.t.tUpper Continental Deposits


I         The uppercontinenial deposits; as desCribed in the PhasemReport (Clausen·et-al., 1992b), represent an
    upward-fining sequence ofgravels, smids, silts, and clays deposited ina lacustrine environment capped with
    wind~blown silts and clays; The lowest member, generally a sandOr gravelly sand, merges with the underlying .


I   lower, Continental' deposits. The borings of the Northeast Plume Investigation support,this interpretation. Certain
    gravelS ,in thesoutfum.partoftheplant are COJTelatable over a largerarige (up to 500 feet). These gravels appear
    to be eitherteIrace:-gravelS or gravels derived from terrace material. The gravels were possibly deposited as'part
    of an alluvial. delta coming off the Porters Creek terrace.
I
I
I
..."- "-" -" ".- - -....... - - - .. - - - - - -.                                                   ..




                                                                                       HYDkOlQGlC
         SYSTEM               SERIES                  FORMA110N              umOLOGY     . UNIT
                         PLEIsTOCENE / RECEN!

      QUATERNARy~·__P_ZE_1_S_1V_C~E.NE__~_ ..... _._..... ___.___..___..~.
                                 __ ·
                           . PLEISTOCENE
                                                       CONTININL\L
                          PLlOCENE-                      DEPOSITS




                                                        ..JACKSON,
                               EOCENE                  CLAIBORNE,
                                                   AND. WILCOX       DJS.
         TERTIAAY



                                                     POKfERs CREEK
                                                         CLAY    ..
                             PALEOCENE

                                                      CLAYTON I'M.



                                                             LEVINGS
                                                               MBIL
                 CRETACEOUS



               MISSISSIPPIAN
I
:1.                                                 15


I
'I:
'I'
,       ,




:1.
,I
I
I
I
1
I
I
I',
I
    I'
    :1
            Figure 6. Conceptual Diagram of the Geology at the Paducah Gaseous Diffusion Plant.
    I
    I
 I
 I                                                              16

      3.1.2 Lower Continental Deposits
 I           The lower continental deposits consist primarily of fluvial gravels in a matrix of poorly-sorted sand and silt.
      The base of the unit is an irregular erosional surface created by scour channels of the ancestral Tennessee River.
 I,   The unitpinches out to the south, terminating at the terrace cutin the Porters Creek Clay. Well-defined in drill
      cuttings and on geophysical logs, this erosional surface places lower continental deposit gravels in contact with
      the .fine-grainedsediments of the Porters Creek Clay or McNairy Fonnation. The'upper boundary of this unit
 I    is iess,well;.defined. Drill cuttings and borehole geophysicsJromtmsinvestigation, presented in Appendix D,
      show the upper portion of the lower continental deposits is frequently a fining-upward sequence. The gravels
      often become sandier near the top of the unit, merging vertically and laterally With a coarse-grained unit of the

 I    upper continental ~eposits;                                                          .       .

             The borehole :geophysics and drill cutting. sampleSfrolll theinvestigation"mdicate grain sizes range from.
,I    fine- to inediwn-grained silty sands to coarse, clean gravels with sandygravcls predominating. This investigation
      revealed a complex, ~ structure of gravels with thin interbeds of sandS and silts bundled into several larger
      units which collectively fonn the lower continental deposits. Preliminary. indications are that east of the C-400
:1    area individual units:fuive their long axis oriented northeaSt-southwest. ,This corresponds well with the previous
      identification ,of a,major northeast-southwest trending channel in this' area. along the terrace. Toward the north
      and west, this orientation may change. Individual units within the lower continental deposits can be correlated
,I    short distances based on color, grain size,gravelmat.erijd, and gainma ray/neutron log character. Some units may
      be correlated across 40r 5 Wells representing adistanceof610 to 915 meters (2000 to 3000£eet). Areally, the
      units are narrow, usually less than 305 meters (1000 feet) wide. Most units, however, have been truncated,
      making correlation difficult.                                    .
 I          The coarse-grained sediments of the loWCr ,continental deposits represent high-energy fluvial systems of
      erosion and deposition. Besides the southenimost terrace fonned in the Porters Creek Clay, several smaller
 I    channels cut intothe.underlying Porters Creek CI..yand McNairy Fonnation. Where these channels correspond
      to the coarse, clean gravels, a preferential flow path for TeE contamination exists. This situation exists along
      part of the southern edge of the Northeast Plume complex.
 I    3.1.3 Porters CreekOay


 I          Along the ,south edge of PODP, a buried river terrace marks the' southern boundary of the ancestral
      Tennessee River in ,thiS area. Cut into the Porters Creek Clay, this terrace also represents thesoutheni extent of
      the lowercontUtental deposits~ The Porters Creek isa stiff, dense, black clay occuring between the continental

 I    deposits.and.the McNairy Formation. Origlnally thought to·be tnmciated at the. terrace face,borings in this
      investigation and wellsmstalled for the Northwest PlUme hydraulic 'containment system penetrated sediments
      interpreted as Porters Creek some distance north of the terrace. This is cOnsistent with the irregularities of the

I     erosional surface that fonDS the contact between the lower continental depOSits' aDd the Porters Creek Clay.
      AppendixF, Dr~wingFshowS'the extent of the Porters Creek Clay.                    .

      3.1.4 McNairy
                                 .                                                       .

            Except for Boring P4F8thatpenetrated the full McNairy section, most borings in the investigation only
      sampled the upper 15 meters (50 feet) of the McNairy Fonnation. Cotrl:lationofindividual depositional units
      in the upper McNairy isbestdone with the borehole geophysicallogs;'This upper 15 meters (50 feet) contains
      a complex sequence of clays, silts, and unconsolidated, fme-grained, well~sorted sands with occasional fine
      gravels. These sediments were deposited in a reducing environment interpreted as coastal marine. They are dark
                                                                                                                               . i
                                                                                                                                 I
                                                                                                                                 I
I
I                                                               17

      gray to black and contain abundant pyrite and glaucOnite~ plant fragments, and pyritized plant material. Evidence
I     of the coastal marine environment were found in Boring P4F3, a.thin lignite bed, and Boring P4G 11, a pyritized
      worm tube;                                         ,

,I,         Some.evidence for subaerial exposure exists·with,axidized'sands occurring in some borings, such as.P4G5.
      Although some of these· sands 'occur near the top of the ,interval' andcould'have been oxidized during erosion ,by
      the lower cOntinental deposits, this is ,not always the case. There ,are several instances where the oxidized ititerval

'I    is separated from the lower Continental deposits by 6 to 9 meters ,(20 to 30 feet) of unoxidized sediments. Other
      than the oxidized zones, the sands look very similar in most of the samples recovered.


·1          Gravels found in the upper McNairy appear to exist in narrow', thin lenses of limited areal extent. As
      Figure 7 shows, the gravels at the P4DI0 area are less than 23 meters (75 feet) wide and less than 3 meters
      (10 feet) thick. .These gravels are definitely upper MCNimy gravels because~there is Porters Creek Clay overlying

 I    them. Northwest ofC-400, the gravels have been identified tentatively as McNairy, though the overlying Porters
      Creek Clay has been completely'eroded.
              . ,                                                .


 I          The McNaiIyisioformally broken into three members: the upper McNairy, the Levings Member, and the
      lower McNairy. The Levings Member,(Figure 5)oonsists of silts, clays, and very fme-grained sands toronn a
      gealogic andhydologic barrier between the upperand,lower portions of the McNairy. Boring P4F8 penetrated
      the full McNaiIySection,aodencountei'echhelevings Member ftom 49 uietersto 82 meters (160 feet to 268 feet)
 I    below groUnd swface. The lOwer McNaiIy consistsalmosl'exclusively of fine-grained, flowing sand and occurs
      ftom82 Dieters to 102 meters (268 feet to 334 feet),beloWigroundslJrfaCe.      .

 I    3.2 SITE HYDROGEOLOGY

            The Phase mReport contains adetrlledexplanation of hydrologic conditions at PGDP . FigUre 8 presents
 I    the conceptual hydrogeology of the     area. '
                                                 While the basic hydrOgeologic units remain, they have been grouped
      differently to better definetbe hydraulic action ,of the RGA. The follOwing drawings, located in Appendix F,
      depict contours of the hydrogeologic unit cootactsand isopach' thicknesses.. "
 I     Drawing G.            Map of the.Base'ofthe Regional Gravel Aquifer.
       DrawingH.             Map of the Top of the Regional Gravel Aquifer.

 I     Drawing I.
       DrawingJ.
                             Isopach Map of tile Thickness of the Regional Gravel Aquifer.
                             Map of the Top of the McNaiIy Flow System.

 I     3.2.1 Upper ContiQental Recharge System

            The UCRSconsists of three distinct hydrogeologic units ~ HUl, HU2, and HU3:- described in detail in the
 I    PhasC mReport(ClauSen,et al~, 1993). The uppermost unit, HUt, is ~e overlying loess that blankets the entire·
      site.       ".'                          ".

 I           HU2, the'secondtmit, pmnarlly comes to mind when discussing the UCRS.Theunit consists
      of discontinuous sand and gravel lenses with groundwater flow Ultimately downward to recharge the RGA .
      (Figure 8). The Phase mReport contains.more discussion about the unit's hydrogeology.·Site Evaluation 'of ..
 I    SWl\llis i 93·and 194 gave evidence ofboth the discontinuity of the coarse-grained lenses within the UC~ m.d
      their low hydraulic conductivity. At the 24 locations water sampling was attempted, only 15 found a saturated


 I
 I
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I                                                                           18


I                     Wea~
                                     P4Dl2A                P4DIO                                                              P4D12
                                                                                                                                                                       East
                                     7/26/94               7/8/94                                                             7/14/94

I               10-


I               20-
                                                ~I-Temporary Casi~



                30-
I               40-

I         1     5
                  0-
                60-
                                                 ] 5U
                                                                                                                                    I<...
                                                                                                                                    I<"
                                                                                                                                            5U
                                                                                                                                            5U



I          Lo-
I
           ..
           ,g80-··<··~· .. :.· ~2161.·.··kJl04E·.:
           _Cl)  ':'        4"    ' .              -:,.
                                                           .

                                                                                     ..     ..
                                                                                                 ............
                                                                                                    '.
                                                                                                                                              ...•. ,.
                                                                                                                                            ..~
                                                                                                                                                  ~     •                  •
                                                                                                                                                                ••• '.:.'. _ .




                                   . . .:
           III
           ~      .' • • .
                     ." '.~. 4'. '. · I
                                    ...f .... . . . . :- .. , . .:.... . . .....·..
                                        . . ..                   ....
                                                                         : : : 4"                                  ..




I          !    90-::                                          ...
                      ~.~~.<: ::~ 1B~8~·~ ~1?!~1.> . ~~'. :.·.~.~4·' ;~~:.                                 .<.
                                                                                                          : . '.        ...


                                                                                                   ~ :~ ~:. :.~. :·4'·.~~
                                                                                                                               :.


                                                                                                                                         '.: . :.. · ·;·.
                                                                                                                                                  '..       .




               10In :__-_-_-_-___-_-_. 1cC1285~'~' V\2~51: ..... : .: .':•. ' --_-.:-_++..p...;-_~-_--...... ......_'. ;-_'.--_--_-.,;;_--_-'""_-~_.
                     . ::..... ..tI_
                                        ~:~----_-_-__ I~
                                                                              ... ".' .
                                                                             .'.. ...
                                                                                                 '"<.:'_--__-_..;.- ". :. ~., ......
                                                                               ""_ _.:....-_--_---_:...._-..:._-_-_-
                                                                                                                  __          ...
                        :-:-:-:-:-=-::~        15,:;-:-:-:-:-:- :-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:~ e;s:-:-:-:-:-:-:-:-:-:-:-:-:-
I              11(}- :::::::::::::::::: :::::::::::::::: ~:::::::::::::::::::::::::::::::::::::: ::::::::::::::::::::::::::::::
                        --------- -------- ------------------- ---------------
                         --------- ---------------------------- ---------------
I
I
I                                                                       . Legend

                         r,;::1 Regional Gravel Aquifer                                11441
I                       t-:-] Porter's     Creek Clay
                                                                                                         TeE Concentration (uc/L)

                                                                                                         Undetectable TeE
                         1<·.>J silty sand to sandy
                                McNairy 'ormaUon
                                               silt                                                      TeE BeloW' DetecUon Umlta,

I                       k--~ McNairy rormaUon--olay

                                 McNairy 'ormaUon--sand
                                                                                                         ConcentraUon Estimated
                                                                                                                                    86                            110 rNt
                                                                                                                                     I                             I
I   Figure 7. McNairy TCE Contamination at Groundwater Monitoring Phase IV Investigation
              Boring P4DIO.
I
I
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I                                             19


I
I
I
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I
I
I
I
I
I
I
I
I
I
I
    Figure 8. Conceptual Diagram of the Hydrogeology at the Paducah Gaseous Diffusion Plant.
I
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·1
 I ..                                                         20


 I      sand. Those 15 locations yielded approximately 150 mLofwater in a reasonable amount of time, only enough
        to allow field parameter (PH, temperature, and conductivity) and VOC analyses. The low water volumes
        prevented the gross alpha and beta analyses originally planned and the TPH~ lead, chromium, and cadmium
 I      analyses planned for Some loCations. Gross: alpha and·beta ailalyses and lead"chromium, 'and cadmium analyses
        both require one liter of water. In additi~ GrouitdwaterMonitoring Phase N Investigation borings that included
        water sampling in the UCRS, required a bailing'ntethodiforretrleving the samPle; use of-bladder pump, as used

 I      for RGA and McNaily sampling, was not possible due to;lack ofsufficieitt water for pumping Within the interval.

             The lowermost unit, HU3, is nearly·continuous·throughoutthe.site and consists of predominantly clay, silt,

 I      or clayey silt. Composition ofHU3 may vary,' but it appears to form a confining layer due to relatively low
        hydraulic, conductivity.


 I      3.2.2 Terrace

              Hydrogeologic conditions along the Porters Creek terrace are uncertain. Alluvial channels intersecting the
        terrace may provide groundwater underflow to recharge the RGA. However, groundwater flow along or from the
 I      terrace to the RGA does not appear to have affected the direction of the contaminant plume to the east of PGOP.

        3.2.3 Regional Gravel Aquifer
 I           The RGA is a hydrogeologic unit composed primarily of the Jower continental deposits (HU5). Coarse-
        grained sediments above and below the 10wer'contiDental deposits may be included in the unit. The Phase m
 I      Report (Clausen et al., 1993) defined the coarse-grained sediments above the lower continental deposits as the
        HU4 hydrogeologic unit. The HU4 should be considered a part of theRGA. Coarse-grained upper McNairy
        sediments in direct contact With the lower continental deposits may also beconsid~ed a part of the RGA.
 I                                                     .                           .

             .Close inspection ofthe·gmmna ray logs collected dUring.the Groundwater Monitoring Phase N Investigation
        (Appendix 0) reveal theHU4 is actually the sameumt as the RGA. Traditionally, the distinction betweenHU4
 I      and HU5 has been grain size. However, according to the logs, HU4 is simply a sandy facies of the RGA unit.
        The.comparison is best seen in the logsforP4A2JP4A3 andP4061P407. The HU4 is a sand in P4A2 and P4D7
        and a gravel in P4A3 and P406. .

 I            Upper portions of the coars~~grained McNairy sediments in direct contact with the lower continental
        deposits are hydraulically connected with·the RGAand,should, thus, be considered:part oftheRGA. Thegamma

 I      ray log for P4G8shows:why. The sandy gravel at"thebase of:the 'HU5 (27 meters to .31 meters [90 tol 03 feet]
        below ground surface)changes:to a gravelly sand in the McNairy. i'hisgravelly sand, with two.thinsilt beds,
        continues to 37 meters (120feCt) below ground,surfacewhere:the:lithology'changes,to asiltyc1ay. 'The interval

 '1     from 31 meters to 37'meters (103 feetto'120 feet) correlates. as McNairy sediments. TCE.concentrationsare
        nearly as high at37 meters (120 feet) as. they are at31meters (103 feet), 4777J'g/L,oomparedto.6826 J'g/L,
        respectively. A sample taken at 43 metCrs(140 feet) M,th 6 meters {20 feet) of intervening silts and'Clays
        contained only 5,4· J'g/L rCE,                             .                       .
 I            Traditionally,deterniininggroundwater flow directions Within an aquifer requiredplottingbydraulic head
        data On a map and contouring points of equal head to create a poten~ometricmap; A line drawn perpendicular
 I      to those contour lines:shows maximwn groundwater gradient with inteimediategradients .found' along lines drawn
        at other angles to the Contours. Groundwater flow direction parallels the maximum gradient, assuming isotropic

 I
 I
I'
 I                                                            21

     conditions. Appendix E contains potentiometric maps of the RGA from August 1993 through September 1994.
.1   These potentiometric surfaces reveal a general groundwater gradient to the north. This, however, contradicts the
     apparent migration paths to the northeast or the northwest suggested by the distribution ofcontaniination.

 I          This investigation provided additional information regardinghydnlulicconducti,vity within the RGA. Based
       on water level response during sample events, some intervals o(the RGAappearedlesspe~eable than others.
       Correlation ofbortmole geophysical logs and cirill'cuttingsin the.southeastpoition of the study area indicate
 I   . hydrologic Sllbunits representative of coarse·grain~ hydfaulicallyconductive channel deposits.

           While the hydraulic gradient J~rgroundwater isprooominantly to the north, other influences probably

 I   control the northeasterly and north~ly trends mapped by the contaminantplumes~ These influences include
     internal variations in magnitude and direction of hydraulic conductivity due to changing grain sizes and the
     geometry of different depositionai.Umts within the' RGA. The apparent migration of TCE from the C-400 area
     to the northwest supports thiS interpretatiOn Pumping tests that coUld resolve flow direction to the northeast have
 I   not been conducted.                      .

          ,The Colloidal BoresoopeInvestigation conducted during the summer of 1993 directly measured flow
     direction within several:wells. The Colloidal Borescope is an instrument similar to a television camera that is
     lowenxiintoa ~Ieted Well; The camera;reoords oolloidsmoving across the well screen with the groundwater.
     The data is then input into a cOmputer program that calcUlates the velocity (magnitude .and direction) of the
 I   colloids and implies velocity ofthe groundwater. Infomation gathered (Kearl, 1994) alluded to varying flow
     directions within,the RGA, even within'the same borehole at different intervals. Predominant flow directions
     appearonFigure El of Appendix .E, along with the.potCntiometric surface for July 1993.
 I   3.2.4, McNairy
                                                                .




 I         This investigation redefined the RGA to include portions of the McNairy Formation. Certain areas of the
     McNairy contain coarse-grained sediments at the top of the formation, directly underlying the lower continental
     deposits, which form the bUlk of the RGA. With little or ,no fine-grained sediments to separate the lower
 I   continental deposits from the McNairy, the two geologic units act as a single hydrologic unit, the RGA. Boring
     P4G8 illustrates this with gravelly sands and thin silts of the McNairy in direct contact with the sandy gravel of
     the lower continental deposits.,
 I          The Levings Member oftheMcNaiiy Fonnation(Figure5) may form a:hydrogeologic barrier dividing upper
      and lower portions of McNairy Formation. The Levings MembercODsistS of siltS; clays, and very fine-grained

 I    sands to. form a geologic andhydologic barrierbetweenthe~upper. and lower portions of the McNairy. Boring
      P4F8pCnetrated.the full McNairy section andencouriteredtlle,Levings Member'from49imeter~ to 82 meters (l6~
      feet to 268 fee,t)beIow ground sUrface. Across the ,plant ,site, ,the Levings Member appears to· range in thickness
     .from24meters to 34 meters (80 'feet to no feet). During drilling of boring P4F~~ water samples and water levels
'I    were taken.at fOlirdepths in the McNaiiy. Field results suggested a slight upward gradient from the Levings
      Member to the upp~ McNairy shown' in Table 3.. . .                      .       .     .

 I
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;1
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.1                           Table 3. Water Samples From the McNairy. in Boring P4F8•

          Sample Depth (feet)          TCE Concentration          . 99'fcActivity(pCiIL)
 I                                           (~gIL)
                                                                                               Water Level' (feet)

       . 120 (Upper McNairy)                   SU                      No Sample                      71.S8
 I           149 (Levings)                     SU                           18                        63.. 6
             200 (Levings)                     SU                      No Saniple                    104.33
 I           260 (Levings)                     SU                     . No Sample                     64.21


 I        3S0 (Mississippian)                  SU
           5U indicates TCE was not detected ata S ~gIL detection limit.
                                                                           20 .
                                                                                 .
           99'J'c activities below the upper McNairy will be discussed in Section 4.3.2.
                                                                                                No Measurement



 I                       4. RESULTS OF THE NORTHEAST PLUME INVESTIGATION

 I    All references to the RGA are in accordance. with the redefmed RGA explained in Section 3.2.3.

 I    4.1 SOURCES ASSOCIATED WITHCONSTRUCfION STAGING AREAS

      4.1.1 Truck Wash and FiIlingStation
 I                           '          .                                                               .
            The electromagnetic sUrvey ftom,this site revealed tbreebigh amplitude anomalies, potentially representing
      buried metal objects (Figure 9). These lie along an east-west line. between 30 and 37 meterS (100 and 120 feet)
 I    north and 24 and S5 meters (80 and 180 feet) east of the survey grid origin. All three of these anomalies appear
      to represent relatively large,bwied metal objects.. Based on example data from other sites, the anomalies.are too
      large to I'qlresent single.drums.
 I          The anomaly shown along the eastern edge of the contour·map for the truck wash and filling station area
      denotes the ends of;two track rails noted aIong the former railroad· track bed. B8ckground electromagnetic
·1    interference from the steel' cylinders in the ·nearbyUF6cylii1.der yard caused the area ofhigher, response across .
      the nortbedge of the· truck wash andfillingistation area.             '


 I         Usingthegeophysical!data to guide them,.theinves6gationteampl8ced 'boring 193-4just north and 'between
      the two highest ,electromagnetic responses (Figure 9) to detect any contamination resulting from the buried
      objects. Analytical results from this boring. showed no contamination.

 I    4.1.2 Drum and Tank Storage Area

           The electromagnetic survey in the dnnn storage area revealed only one ,high amplitude response (Figure 10).
 I    This anomaly 'appears to'represent a buried metal object; however, determining the,exact nature of the target
      requires a more. intrusive investigation. Boring 193-6 was located north of the high amplitude response, and

 ,I
 I
__ .              ~~_n   ... _~_~ _ _ _ _ _ _ _ . _ _ _ .                                  _ - - - .. ~   ~_   .    ~_--.'   _~~-.   .    .-·'r~·




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         ~.
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                                                                                                     r--
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   ==
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                                                                                                    L    193-1J'¥I
                                                                                                        -_....:!'
   rn _ •
   =~
   ..... tII

   a·o
   Q til
   ="CI
   >;:; .
   ., .....
   til _.

   ==
   .(JQ
    tIfJ
                          ~           .101099




         -
                                                       <:>

         ~                •
                          1112QOto299
                                      lQOlOl99         ~


         rn               @s 30010399                  <:>
         c                                             ~


         ~                •        40010499
                                                       .~

         ~
                          •        50010599
         fIl              rJ"fg    6QO to 699
         s..
         ......           ~ 70010799
                                                  01
                                                 :~
                                                                                                                                     IV
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         Q                .'80010899              0
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                          •       .Above9()O           co

         3:                   Respo~(mVl



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         c:
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                                                       ....
                                                       0
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         a
         n
         ~                                             <:>

         ~
         =
         fIl
         =-                                                        Legend
         =
         =
         Q.
                                   1:-4 SampledLocation
                                   .~ Fonner Construction Staging Area
                                      'CSWMU193)
                                          _...
                                       ..r·"~:   Outline of Geophysical Survey Area
                                                         From Channell Data Match, ·1994
:----------~--------
 .. ~
  ~.



  -
  "'I
 .~



  ..c:>

                             R        ·10100
                                                                 193-4     193-3
                             =
                             •        11019                        o!b.   &;
                                     201049                       ..".         193-1
                             -        SOto99 .
                           . C-:J 100 to 299
                             I11III300 10 599
                             _AboVe       600

                                 Response (mV]
                                   FEET
                           o··W                 'f
                           11M -'---'-'
                          0-$        15
                                                 I
                                                30

                                 METERS




                                          Lee.md
           A
          193-4
                       Sample.d Location
           m           Fotm~ Construction Staging Area
                       (SWMUl93)
          r--: .
          . . . . ~I
                       Outline of Geophysical Survey Area
                               From Channel 1 Data Mlrch, 1994
 I
 I                                                              25


 I     193-2 was located north of a lesser response (Figure 10) todetectany,contaminationresmting from the buried
       objects. Results of analyses from these borings showed no contamin~tion~

 I     4.1.3 Millwright Shop

             Sampling was ~nducted near 'the former MiUwrightShop duetoits manufacturing function. In addition,
 'I    groundwater samples taken during,apuinping testeonducted ~ 1992 at MWI08, near the Millwright Shop
       location, revealed TeE up to 1800Jl!VL. Before,theNortheast 'Plumemvestigation, the C~333 Process Building
       was a suspected"somce since an;of'the process· buildings contain degreasingfacilities. However, no TCE was
 I     reported to have OOenispilled at C:'333. Although soilsamples from ,the: Millwright Shop area (Figure 3) revealed
       no contamination above detection limits,lhe watersample:collecte4at 21metei's (70 feet) below ground surface
       from 193-20 contained TCEoontaniinaiionat 162JLgIL,. Borings P4H6 and PZ118 (Figure 3) also show TCE

 I     in the RGA.P4H6, upgradient from the Mill~ghtShoparea,contaiDsless than 5 JlgIL TCE throughouithe
       RGA. PZl18,approximately 46:meters (150 feet) southeaSt of the former shop, contains 6700 J.lgIL TCE at the
       base of the RGA. . Due to its proximity, the area near the former Millwright Shop appears the mare likely source
       ~~..                                                                        .   .



 I     4.1.4 Kellogg Leach Field

 I          Another staging area, the former Kellogg Pipe Fabrication Shop, wasaISo suspected as a source to.the
       Northeast Plume. During the CERCLA Site Investigation (CH2M Hill, 1992); investigators installed several

 :1    borings in the area withoutfmding TCE concentrationsindicatiye ora: source area.

              Closer investigation ofconStruction:plaris:shOwed a septictank:and'leach field approximately 91 meters
       (300 feet) from the siteoftheJormer'KeUoggbuilding (F'igW"C n.)~Boringsp4DI0, P4D12, P4DI2A, and P4E7
'1'·   revealed TCE conceiltrations greater than 1000 Jlg/L throughout the RGA immediately downgradientof the leach
       field. Strong evidence for the presence:ofdense nonaqueous phase liquid.(DNAPL) near the area is the fact that

-I     the TCE concentrations are consistently high throughout the RGA. .

       4.1.5 Other Facilities


I            Other facilities,investigated,dming:the site evaluation included leaching fields for administration buildings,
       an electrical warehouse and. sheet metal shop(s), a paint shop, a, receiving warehouse; both, light and heavy
       equipmentSbops, and a:steel reinforcing shop.. Results ofanalysesfrombotlt soil and water samples' near these
I      facilities ,(Figure 3) showed no contam:inants of concern above detection limits.



il     4.2 AREAS OF GREATEST CONTAMINATION

             The GroUndwater Monitoring Phase NInvestigation suggested ·severalsouree areas of contamination for
 I:    both TCE and~c.Determination of the direction, of flow for each plume reSuIting from these areas of high
       contamination has notbeen accomplished. Figure i2'providesthe loeations,ofcross-sections (Figures 13-19)
       that illustrate mterpretationsofcontaminant distribution within the ROA.

'I.
I
I
I
I                                                                                   26


I
I   ,.
    ~
                                                                                         \   .. . ......... "
                                                                                                  ,




                                                                                                                                        . "<   ".~.




I                                                                                                                                                     P",D9
                                                                                                                                                               A


I
                                                                                                , SEPTIC

I                                                                                               . TANK
                                                                                                                                                      P.D12
                                                                                                                                P..Dl2A_A

I                                                                                                               LEACHING
                                                                                                                   FIELD
                                                                                                                                               .: P..D10



I                                                 .'.'   .                                                                 '.   '.~ ~
                                                                                                                                                          ."   ..


                                      '- .


I
                                             '"

                                                                                                                                                      A
                                                             ...   ,   .....                                                                          P.DU


I                          '-::;
                             : .'


                               "
                                                                               P",E8 A
                                                                                                                           .:"'"




I                 Le,end                                     Portion of Fiaure 3.
                                                                                                                                         PLANT
                                                                                                                                ~(t\,)~" NCRTH

I        A Northeast Plume
        P",E7 Samplin, Location
                                                                                                                                 ~~edr-


I
I
        rtj   Former Construction
              staaina   Area
                                                                                                                                          l
I
I
                                    Figure 11. Former Kellogg Building and Septic System.
I
I
I
I                                                                 27


I
I                                                                                    ~   .. .. :-:. ' ,,'
                                                                                           ~
                                                                                                            ..,'   ~.;




I
I
I                                                                      C-337




I
I
I
I
                                                  .-"

I
                                       :   ,'"
                                                 .~   ",'   ;.'


                                                      .",    ,
                                       ."........... ,. ""'V",




I
                                                                               ...
I
                                                                        ;' "    ~
                                                                        ,


                                                                                                                                     PLANT
                                                                                                                         "'(~\,)~~   NORTH
                                                                                                                         ~~edr-
I   6.   TemporaJ7 SampUIll LocaUon




                                                                                                                               ~
    o    ExlsUna   liIollitorlDa Wen


I        Crou SecUon LocaUon




I
                   Figure 12. Location Map for Contaminant Cross-Sections.
I
I
                                               28




                             co
                          '.~


                             -
                             c.



                                ..
                                ..
                                -
                                (!)
                                a..

                             -
                                CJ)
                            .CD

                                ~
                                l          I




                            -.
                            ~




                           .'
                          ..
                            c:"
                            C-

                           eo                                    0
                                                                 0
                           ...,
                            I                                    CO
                                                                 (0
                                                                  \




                                      I,




                                -
~----------------~ '~.~==~~~------~



Cross;.;Section A-A': Interpretation ofTCE Contaminant Distribution in the Regional
Gravel Aquifer.
I
I                                                   29


I
I
I
I
                                         -
I                                        (!)
                                         ~
                                        Co



I
I
I
I                                       -
                                       ."
                                       (\I




                                       Co
                                        co
I                                       ~
                                        "")
                                            I




I
I
I
I
I   Figure 14.   Cross-Section A-A': Interpretation of"Tc Contaminant Distribution in the Regional
                 Gravel Aquifer.
I
I
-----~------~---~--




  P4G9   MW168       P4Gl           MW178            P4G2·

                                                             340
                                                             320   w
                                                                   .0

                                                             300
                                                             280
                                                             260
                                                             240
                                                             220
  )0             -4600      -4400           -4200   -4000
-------~-~---------

       --~c..,l(~             ---I
         tkIits: .   pCi/l

                     25000
                     10000
                     soao
                     250.0
                     sao


  P4G9      MW168                  P4Gl
                                                  MW178
                                                                    P4G2

                                                                           340
                                                                           320
                                                                           300
                                                                                 -
                                                                                 w




                                                                           280
                                                                           260




  JO                       -4600          -4400           -4200   -4000
:1
1-                                                    32


'I'
:I~

:1
:1
I
:1
I
I
I
 I
 I
 I
 I
 I
 I.   Figure 17.   Cross-Section' C-C': Interpretation of TCE Contaminant Distribution in the Regional

'I                 Gravel Aquifer.



 ,I
 I
 :1                                                        33


 :1                                                                                        o
                                                                                           o
                                                                                           o
                                                                                           <:'II
                                                                                            I

 ;1
 'I
 II
 :1
 I'
 I
 I'
 I
I
I'
I:
 I
 I,
I     , Figure 18.   Cross-Section C-C': Interpretation of99'fc Contaminant Distribution in the Regional

I                    Gravel Aquifer.                                                              .



,I
I
.1                                                       34




                                           «
                                          ...
                                          (\/

                                          o
                                          ~
                                          a.

                                           ,...
                                           w
                                           ~
                                           a.



                                                                                               o
                                                                                               o
                                                                                               N




                                           co
                                           UJ
                                           ~
                                           a.


                                                                                           o
                                                                                           o
                                                                                           (0
                                                                                        ~

                                                                                           I


                                                                                       g
                                                                                       <XJ




                                                  LL
                                                  'lit
                                                  a.                                   o
                                                                                       o·
                                                                                       N
                                                                                       I




     . Figure 19.   Cross-Section 0-0': Interpretation ofTCE Contaminant Distribution in the Regional·
                    Gravel Aquifer.
I
I
 I
 I                                                             35

      4.2.1 C-340 Area
 I         Borings. P4F5and P4E8, located on the west and east sides of the. C-340, ~spectively, revealed TCE
      concentrationsand',patterns ofcontamination interpreted as those of a source zOne (Figure 19). Boring P4F5
 I    encountered an elevated99'fc activity (382 pCiIL) at the base of the RGA; however, the top of the RGA and
      adjacent borings revealed no activities higher than 34 pCiIL.

 I    4.2.2.Switchyards

            Warer samples from the 193-16 boring, locatedjust west of the C-533 Switchyard(Figure3), showed TCE
 'I   at 213 Jig/Latadepth of9;8meters:(32 feet) below gtoundswface. Borehole P4H1 indicated similar TCE levels
      of217.3 Jig/Land 143.4 Jig/L at 10.4 meterS (34 feet) and 12 meters (39 feet), respectively. Both borings were
      sampled in the terrace gravels, south ofthe,RGA Due to its proximity, the C.;533 Switchyard inay be the source

 I    ofTCE contamination in 193-16 and P4H1, although other facilities in the area could also be contributors.

          : .A second example ofTCE contamination possibly related to switchyard operations was discovered in boring

 I    P4E8. This,boring,located:east oftheC-531 Switchyaid, contained 641 Jig/L TCE in the top of the RGA. An
      up gradient boring, P4F5, contained only 327 Jig/L at a similar depth (24 meters [80 feet]); This may show
      pT<?ximity to:a.source area (Figure 19).                                                     .

 I    4.2~ C-720 Area

            TCE and !l9'fc ooDtamination have been dOcumented in MW203and MW204 (an RGAlUCRS well cluster)
 I    located near the northeast comer of the building. Boring P4H7,just north of the monitoring wells (Figure 4),
      revealed higher than expected TCE contamination, 6329 Jig/L attht top of the RGA. Concentrations in P4H7
      decreased to 48 Jig/L at the bottom of the RGA. Highest 99'fc activity, at,the bottom of the RGA, was 78 pCiIL.
 1
 .    The direction ofthis plume is uncertain,butthe interpretations presented in Figures 20 and 21 generally show
      it heading north into the C-400plume. Since the direction and size of this plume is uncertain, it exists asa data
      gap.                      .
'I    4.2.4 C-400 Area

 I           Before this investigation, the C-400 are8 was considered the major source for the Northeast Plume. Several
                                                I


       potential source areas exist from the former workings of the building such as cleaning tanks and dissolvers
      .(SAlC, 1994). The C-400 area is .very comple,dn1tenns of separate source unitS because the facility housed so
 I     many different cleaningandreclamiltion operations. Seven moriitoringwells and eleven soil borings have been
       drilled;to charaCterize the C-400 area.


 I          Inlightoffindingsb,theNortheast Plume Investigation, specifically analytical results from the borings
      P4G1,P4G8,P4G n, aridP4G12,:most of the Contamination from the C-400 area is now believed to be traveling
      primarily to the northwest Bonng P4Gl, driUedapproxnnately 91 meters (300 feet) northwest oCthe.buildlng,
      encountered high concentrations 'of both TCE and 99'fc,(44,662 Jig/L 8Ild43,922 pCi/L, respectively) at the:base
      of the RGA. Boring P4G2, approximately 183 meters (600 feet) east of P4Gl,. mid boringP4G9, approximately
      229 meters (750 feet) west ofP4Gl, show much lower TCE'concentrations and99'fc activitieS. At,thebaseof
      the RGA, P4G2contained 1838Jig/L ofTCE mel 186pCiIL !l9'fc; P4G9contained;58.4Jig/LTCE and less than
      25 pCi/L 9!l'fc. Therefore, since there are no apparent sources directly east or west, the source for P4G 1 appears .
      to be within the C-400 area. Subsequent borings drilled northwest ofP4Gl, specificaUyP4G8,P4GU, and
      P4G 12, appear to trace TCE from the C-400 area to the northwest (Figures 13 and 14). Borings found'in cross-
I
I                                                  36


I
I
I
I
I
I
I
I                    Technetiurn-99 (pCiIL)
                      ;r,tW <25t050
                      _     50t025O

I                     I5J 250 to 500
                      _
                      _
                            500 to 1000
                            1000 to 2500
                      _     >2500
I
I
I                             -E__~-L-_4~-.J Feet
I
       This drawing represenm a possible interpretation of contaminant conditions based on a limited
I      number of widely-spaced sampling points. The conditions may change with time, and conditions
       significantly different than those interpreted here may actually exist between sample points.


I
    Figure 20. Interpretation of Maximum 99r[c Contamination in the Regional Gravel Aquifer.
I
I
      I
     I                                                        37

     I
     I
    I
    I
    I
   I
   I
   I                             Trichloroethene
                                       <Ito 10
                                  ~~1jIOto 100
                                  o
  I                               o
                                      lOOto 1000
                                      lOOO to 5000
                                  . . 5000 to 10,000
                                  o >10,000
  I
  I
 I                                        E          3
                                                      2000
                                                              4000Peet
                                                                J
 I
                   This drawmg represents a possible interpretation of contaminant conditions based on a limited
 I                 number of widely-spaced sampling points. The conditions may change with time, and conditions
                   significantly different than those intetpreted here may actually exist between sample points.


I
I         Figure 21. Interpretation of Maxim
                                               urn
                                                     TCE C     '"
                                                          ontammatIon m the Regional Gravel Aquifer.


I
I
I                                                           38

    section C-C' (Figures 17 and 18) may define the western edge of the Northeast Plume, though the divide between
I   the Northeast Plume and the Northwest Plume has not been defined and is a data gap. The 99Tc seen in P4G 1
    may have been introduced into the RGA later than the TCE since the 99fc activities are considerably lower than
    the TCE concentrations in Borings P4G8 and P4G 11. The 99fc may also separate from the TCE in its path.
I   Intemal complexities within the upper and lower continentaJ deposits may have a significant influence on DNAPL
    migration paths. Thus, a portion of the contamination emanating from the C-400 area may also be contributing
    to the Northeast Plume. A RCRA Facility Investigation for this area (Waste Area Grouping [WAG] 6) is
I   scheduled for early 1996.

    4.2.5 Northwest Area

I         Boring P4G 12 was drilled just south of the contaminated metal scrapyard in the northwest comer of PGDP
    (Figure 12). This boring, considered downgradient of P4G 11, showed higher levels of both TCE and 99Tc in the

I   top and bottom of the RGA than did P4G 11 (Figures 13 and 14). However, TCE and 99'fc in the middle of the
    RGA were less in P4G 12 than P4G 11. This suggests a source area between the two borings.


I   4.2.6 Other Areas of Concern

          Boring P4F8 encountered low levels ofTCE (<50fJ.!¥L) in the RGA; however, the 99'fc found in the middle
    of the RGA was over 2600 pCiIL. While this is possibly a southern extension of the off-site 99'fc Plume, it is
I   difficult to tie the 99fc to a specific source. However, possible sources for the 99'fc include the C-400 area and
    the C-616 Lagoons.

I   4.3 HORIZONTAL AND VERTICAL EXTENT OF CONTAMINATION

I         Designed to characterize both horizontal and vertical extent of contamination associated with the Northeast
    Phune, the Groundwater Monitoring Phase IV Investigation consisted of 48 borings drilled to an average depth
    of 46 meters (150 feet). Water sampling included the UCRS, where possible, inside the plant and in the
I   Dtransect, and also the top, middle, and bottom of the RGA and the upper portion of the McNairy Formation.
     The sampling effort recovered approximately 270 sets of groundwater samples. The contaminants of concern
    were TCE, its degradation products, and 99fc. Additional contaminants were evaluated based on the proximity
I   of potential source areas. Drawings A, B, and C (Appendix F) trace contours of equal TCE concentration
    northeast of the PGDP fence boundary in the top, middle, and bottom of the RGA, respectively. Drawing D
    (Appendix F) shows contours of average TeE concentration, and Drawing E (Appendix F) shows 99'fc activities
I   for all areas outside the PGDP boundary.

    4.3.1 Regional Gravel Aquifer

I          The detailed COITelations and integration into the plant conceptual model will require some time to complete
    and are beyond the scope of this report, but a couple of points can be highlighted. A direct correlation between

I   grain size and TCE concentrations appears to exist. An example of this relationship exists in the southernmost
    "finger" of the Northeast Plume (Section 4.3.1.1). A finger of contamination could be described as a narrow area
    of elevated concentration compared with the surrounding concentrations. TCE concentrations suggest a
    northeastern migration path, though groundwater flow modeling (Geraghty and Miller, 1994) show flow heading
I   directly north. The coarser, cleaner units may provide conduits for contaminant migration so that the conduits'
    orientation and distribution directly affect plume geometry. Understanding the grain size/TCE concentration

I
I
I
I                                                          39

    relationship and visualizing it in three dimensions is the key to understanding contaminant migration in the lower
I   continental deposits.

        The primary target horizon of the Groundwater Monitoring Phase IV Investigation was the RGA.
I   Detemrining both areal extent and vertical profile of the volume of contamination were major objectives of the
    sampling program.


I          The main contaminant found off-site during the investigation was TCE. TCE degradation products analyzed
    in this project (cis-DCE, l,l-DCE, carbon tetrachloride, l,l,l-TCA, and trans-DCE) were also noted. Table 4
    summarizes the concentration of TCE accessory and degradation products in the RGA. The degradation and

I   transport mechanisms are not fully understood. Twenty-five sample locations inside the plant and eleven
    immediately outside the plant boundary showed degradations products above detection limits. Most of the
    detections were in the RGA; however, eight locations revealed degradations products below the RGA. Those

I   locations are P4DI2A, P4E7, P4F4, P4F5, P4F7, P4G2, P4GIl, and P4H5.

    Table 4. Maximum Concentration ofTCE Accessory and Degradation Products Detected in the RGA

I                    during the Groundwater Monitoring Phase IV Investigation.

         Location        Degradation Product      Concentration(ugaJ           Depth              Horizon

I          P4A2
           P4A3
                             cis-I,2-DCE
                             cis-I,2-DCE
                                                           23.31
                                                           18.91
                                                                               89 feet
                                                                              65 feet
                                                                                                BaseRGA
                                                                                                TopRGA

I          P4B3
           P4B4
                             cis-I,2-DCE
                             cis-I,2-DCE
                                                           27.41
                                                           29.21
                                                                              90 feet
                                                                              95 feet
                                                                                                BaseRGA
                                                                                                BaseRGA
           P4B4                l,l-DCE                      3.71              80 feet          MiddleRGA
I          P4B4          carbon tetrachloride               2.21              95 feet          BaseRGA
           P4C2             cis-I,2-DCE                    53.21              78 feet          MiddleRGA
I          P4C2
           P4C5
                         carbon tetrachloride
                               l,l-DCE
                                                            0.31
                                                            1.21
                                                                              78 feet
                                                                             80/95 feet
                                                                                               MiddleRGA
                                                                                              MidIBase RGA

I          P4C9
           P4D5
                               l,l-DCE
                             cis-I,2-DCE
                                                            1.11
                                                            291
                                                                              97 feet
                                                                              100 feet
                                                                                               BaseRGA
                                                                                               BaseRGA
           P4D7                1,I-DCE                     4.51               100 feet         BaseRGA
I          P4D8                l,l-DCE                      7.71              96 feet          BaseRGA
           P4D9                l,l-DCE                       15               98 feet          BaseRGA

I          P4D9
           P4El
                            cis-l,2-DCE
                               l,l-DCE
                                                            1.41
                                                             41
                                                                              98 feet
                                                                              80 feet
                                                                                               BaseRGA
                                                                                               MiddleRGA

I          P4El
           P4EI
                            cis-I,2-DCE
                         carbon tetrachloride
                                                           5181
                                                             22
                                                                              80 feet
                                                                              80 feet
                                                                                               MiddleRGA
                                                                                               MiddleRGA
           P4E2             cis-I,2-DCE                    60.71              105 feet         BaseRGA
I          P4E4                l,l-DCE
                            cis-1.2-DCE
                                                            7.21
                                                           1591
                                                                              95 feet
                                                                              95 feet
                                                                                               MiddleRGA
                                                                                               MiddleRQA
           P4E4

I
I
I
I                                                                 41

                                                          Table 4 (continued)
·1:
            Location           Degradation Product        Concentration ("gIL)      . Depth           Horizon.

 il·           P4GI
               P4G2
                               carbon tetrachloride
                                     l,l-DCE
                                                                   20
                                                                 382 ..l·
                                                                                    90 feet
                                                                                     80 fee!
                                                                                                       BaseRGA
                                                                                                     MiddleRGA

'11            P4G2
               P4G2
                                   cis-l,2-DCE
                               carbon.tetrachloride
                                                                 30971
                                                                 402.5
                                                                                    65feei
                                                                                    65 feet
                                                                                                      .TopRGA
                                                                                                       TopRGA
               P4G3                  I,I-DCE                      33.5 .            90 feet          MiddleRGA
,I             P403                cis-I,2-DCE                   463;8J             90 feet          MiddleRGA
               P4G5                cis-l,2-DCE                   98.7J              80 feet          MiddleRGA

I              P4G5
               P4G7
                               carbon·tetrachloride
                                     I,l-DCE
                                                                  5.5
                                                                 50.1
                                                                                    90. feet
                                                                                    77 feet
                                                                                                       BaseRGA
                                                                                                       BaseRGA
:1,           P4G7
              P4G7
                                   cis-I,2-DCE
                               carbon tetrachloride
                                                                 998J
                                                                 24;6
                                                                                    77 fOOt
                                                                                    77 feet
                                                                                                       BaseRGA
                                                                                                       BaseRGA
              P4G8                   I,l-DCE                      89.8              100 feet         . BaseRGA
:1·           P4G8'                cis-l,2..DCE                  .5911 .
                                                                ",148 .
                                                                                    80reet ..'       MiddleRGA
              P4G8             carbon tetrachloride                                 80 feet·         MiddleRGA
11            P4G9
              P4G9
                                     I,l-OCE
                                   cis-l~2 ..DCE
                                                                  4.n
                                                                 24;8J
                                                                                    80 feet
                                                                                    80 feet
                                                                                                       BaseRGA
                                                                                                       Base.RGA
              P4Gll                . I,I-DCE                      204               95 feet            BaseRGA
I             P4011                cis-l,2-DCE                   542J               80 feet          MiddleRGA
              P4Gl1                 1,1,I-TCA                    2.47J              95 feet            BaseRGA
I            ·P4Gll
              P4GI2
                               carbon tetrachloride
                                     l,t.DCE
                                                                  48 .
                                                                  388.
                                                                                    80 feet
                                                                                    100 feet
                                                                                                     MiddleRGA
                                                                                                       BaseRGA

I             P4012 '
              P4012
                                   cis-I,2·neE
                               carbori,tetrachloride
                                                                 1067J
                                                                  133
                                                                                    90{eet
                                                                                    80 feet
                                                                                                      '8aseRGA.
                                                                                                     MiddleRGA
               P4H5              cis-l,2~DCE                      84J               75· feet         MiddleRGA
I              P4H6              cis-l,2;.DCE '                   27:7              69 feet            TopRGA,
               P4H7                 1,I-DCE                        92               80 feet          MiddleRGA
I              P4H7
               P4H7
                                 cis-l,2~DCE

                                   i';,l,I~TCA
                                                                 282J
                                                                  4.9J
                                                                                    65 feet
                                                                                    80 feet
                                                                                                       TopRGA .
                                                                                                     MiddleRGA·

I              P4H7           carbontetrachloride '.
            J ·indicates. concentration, is ,estimated~
                       .   .
                                                                  7,3
                                                                            .   .
                                                                                    65 feel'
                                                                                                 .
                                                                                                      TogRGA'



I           Nosignificantactivities:Or!l9:fc greater'that 25 pCiIL, the POOP action limit, were roundoff DOE property.
       However, fourboriQ.gs'in.theDtranse<:t contained 99fc activities greater than 25;pCiIL"though the; higheSt in
       P4D 10 was only 58pCiIL. On-site;99'fc was found mhighactivities, the 'highest being 43,922pCiIL near the

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    C-400 Building. Borings P4F6, P4F7, P4F8, P4Gl, P4G8, P4G9; P4Gll, and P4G12contain high activities
I   of99'fc, but these borings are actually associated with the Northwest Plume or th~99'fc Off..;Site Plume.
    Figure 20 shows a possible. interpretation of99Tc contamination within the plant security fence.

I   4.3.1.1 Areal Extent ,of Contamination. '

          In terms ofateal exten4 the' project successfully delineated the southern edge of' the detectable
I   contamination. This line extendS from boringP4H5, approximately 168 meters (550 feet) west of C-333, to the
    northeastnearboringSP4H6, P4Hl,P4D11, and P4C10'to boring P4A3 approximately 3.6 kilometers (12,000
    feet) northeast ofP4H5 (Dnlwing D, Appendix F). The westemedg~ of the TCEcontamination was less well-

I   defined due to obstructions sUch as power lines,the rOO~year floodplain for Little Bayou Creek, and associated
    wetlands which prevented drilling additional borings 'in some areas. 'The western edge of the Northeast Plume
    complex has been' extrapolated from borings P4F8, P4El, P4D4,P4C2 and P4B3 (Drawing D. Appendix F).

I   Lack of drill site access prevented precise definition ofiliC downgradienttip of the contamination. Sample results
    suggest two and possibly three fingers of higher contamination within the contaminant mass (Drawing A,
    Appendix F)~ One finger runs along the southern edge of the mass, one runs underneath the southeast comer of
    Building C-337, and one maybe coming offtheC-537 Switchyard. The southernmost finger is the best defined
    and has the highest TCE concentrations. It also runs parallel to the terrace slope cut in the Porters Creek Clay
    by the ancestral Tennessee River untiltheplwne reaches as far from the site as theCtransect. The finger then
    appears to move away from the teiTace face in a more northerly direction (DrawingD~ Appendix F).

         There were three significant findings regarding the areal extent of the Northeast Plume complex in the RGA:

    •    There is a sharply defined southern finger (Drawing A, Appendix F). Only 76 meters (250 feet) separate
         the apparent longitudinal axis of this concentration from the east edge of the fmger with concentrations
         going from over 2000 JlgIL to less than 5 JlgIL of TCE. The western edge of the southern finger is not as
         sharp, commingling with other plumes. This narrow band of contamination contains the highest off-site
         concentrations of the Northeast Plume. The geometry of this finger will have a significant impact on
         containment and remediation strategies. Other sharply defined fingers could exist within the Northeast
I        Plume complex but were not identified in this investigation.                                       '

    -The areal extent of the contaminant mass at the top' of the RGA ,differs from atthe bottom of the RGA
I     (Figures 22 and 23). At the top of the RGA, the areal extent is approximately 30 percent smaller when
      compared to the areal extent at the bottom of. the RGA. The significance alibis will be expanded upon
      when the vertical profile of the complex is discUSsed later in this section. '

I   -    Investigators.originally considereditheC-400 area with its TCE degfeasers, storage tanks,and,piping the
         probable sourceJor most ofthe COIitamination'inthe Northeast Plume. Boring P4G land: severi'subsequent

I        boripgs to the northwestofthe:C-400 area suggest;thatit is,instead a:niajor.coritributor to the,Northwest
         Plume;' This,revelation'affectsthe,concepiual model for:groundwater flow directions:inthe central are~ of
         PODP and hasresuited: ina':reevaluation of remediation strategies for the Northwest Plume. Figure 12

I        proVides a}ocation, of the. cross section inFigtirCs 13 and 14. These Cross sections indicate a path to the
         northwest. However,the·intema}istructw"es of:the~upper and ,lower continentaI.deposits.could significantly
         influence migration paths:allowing the C-400 area to also bea source for the Northeast Plume. Tbedivision
         between the Northeast Plume. and the Northwest·Plume haS not been defined. TheC-400 soUrce area will
I        be the subject of the upcoming WAG 6 RCM Facility Investigation.                             . .


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I                            /
                   Top .,of the Regional Gravel
                                 .
                                                    "'" ""- '"
I                             Trichloroethene

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I


I
I                                                                              1000110
                                                                               50000
                                                                               10000
I                                                                              100.0
                                                                               TaO


I                                     ........ '~

                                                    -"-"
    Figure 22. Maximum TCE Concentration at the Top of the Regional Gravel Aquifer.
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                                                                         1
I


I
I                                                                                roooo.o
                                                                                 500u.0
                                                                                 roooo
I                                                                                rooD
                                                                                 ra.o

I
    Figure 23. Maximum TCE Concentration at the Bottom of the Regional Gravel Aquifer.
I
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I                                                             45


,I    4.3.1.2 Vertical Extent of Contamination.

           . The vertical extent of cOntamination in the RGA is ,reflected in the difference in -areal extent mentioned
      previously. The higher concentrations, of TCEwere most often found at the bottom oftheRGA. Thesehigh
il    concentrations at the bottom of the aquifer, and,not,atthe;top, suggest the presence ofDNAPL. In some borings, .
      suchasP4G U,:thetop or even the top and middle,samples contained less than 5 Jlg/b, yet the sample from the
      OOttomofthe,RGA contaiIied, almost m,OOOJlg/L,.(cross-section A;,A',Figure 13). As' distance from probable
'I    sourceareasincreased"tlie difference,in dmcentrations between ,the upper and lowttr RGA increased and became
      a qualitative tool for interpreting the proximity of a boringto'a 'source area. Borfugs interpreted to be
      immediately· downgradientof a source· area 'showed high. concentrations of. contaminants either at the top or
,I,   through the whole thickness oCthe·RGA. thOse borings that showed markedly lower concentrations in the upper
      portion of the RGA, .compared to the base, were:interpreted to be farther downgradient from a source area. At
      least 5 wells (MW165, MW168, MW169, MW205, imd MW206) sCreened'in the top of the RGA showed an area

I     to be uncontaminated or moderately contaminated, but nearby characterization borings that profiled the whole
      RGA show that while the top of the RGA may be uncontaminated, the base of the RGA is highly contaminated.
      MW206IP4F3 and MWI691P4G II are prime examples of this pairing (Figure 24, see Figure 4 for location).

I     This finding has affected the selection of screen depths in RGA monitoring wells.

      4.3.2 McNairy:.

I           . The highest coiltamination cOncentratiOIis.found in·the McNaiIy coincide with narrow, thin lenses consisting'
      of coarse-grained material surrounded by fine-grained to'veiy fine-grained quartz sands· of low enough cohesion
      to flow into the borehole.                                                                                      .
I           In general, .the groundwater in the McNairyF.ormation contains TCE where coarse-grained, McNairy
      sediment is adjacent to contaminated overlying lower continental deposits. Lower concentrations.ofTCE were
I     found infiner~grained McNaiIy sediments next to the 'coarser lenses .. However, in one instance, high TCE values
      (Figure·7) appeared to exist in the McNairy Formation beneath several feet of Porters' Creek Clay, 'a competent
      aquitard. The 413.6 Jlg/L TCE at boring P4DIO may have been caused by cross~contaminationduringdrilling
I     operations.. However, evidence from boring P4D12A shows that TCE does occur inihe upper. McNairy at that
      location, tll(~ugh at much lower concentrations (2 Jlg/L at the same interval and 9 Jlg/L deeper). Figure 25 shows
      the distribution or:rCE contamination detected below the RGA. ThefollovVmg table summarizes 99'fc.activities
I     ahove25 pCi/L found below the RGA.Activities below 25 pCilLarebelow the laboratory detectionIimlt and
      are not considCredreliable. Activity detected in this range is usu8llyattributableto normal ,background radiation
      of the environment.                                                . '                      .

I
I                               .Boring/Location
                                      P4D9
                                                          Depth'

                                                         140 feet
                                                                         99'fc Activity (PCiIL)
                                                                                                           .: ' ~


                                                                                   57
,I                                    P4G2               100 feet                  78
                                     P4Gll               110 feet                 301
'1
 I
 I
I
I                                                    46


I
I                 MW206                   P4F3               MW169                               P4Gll




I
I
I
                                                                  -.."   ".    ",'   ....
I
I       ....
        ~                                                                                   --


I
I
I
I                                 end
                 c.:Jj   Reaional Gravel-Aquifer

I                [][) TCE Concentration (ua/L)
                 11![)   Undeotable Tel                                  LOO          lOG het
                                                              1""E3---:.:r:--=;!
                 lo.2J1 TCE Below DetecUon Limits.
I                        CODceDtraUoD EaUmated




I
I   Figure 24.   Contaminant Concentration in Existing Monitoring Wells Screened in the Top ofthe
                 Regional Gravel Aquifer Compared to Investigation Borings Drilled Deeper.
I
I
-------------------
                                            ;'




                                                                                                                                                                                                   .. , .... ," ..... ,.




                                                                                                                                                                            'DIs
                                                                                                                                                                           P4A2               P4A3




                                                                         " "~
                                                                                 :;   "




                                                                             "

                                                              "'/'!"'Y"
                                                               )-




                                                             {                    ..................,
                                                                                              6 ..
                        ,'\.,
                                \",                                                             P4C2
                                 '" \'

                                                                                                              3.3
                                                                                                         ,.A..,P4D5
                                                                                          'is    .'.;'         .....
                                                                                                               ,.
                                                                                                                \.     .. """ ,...... "
                                                                                 P4D4

                                                                                                            1.5.
                                                                                                              , P4D6
            ,~.~    ,
                                                              ,P~E2    "
            P4G12 }"                                                ,~.,:




                                                                                                                                                                 :'   ~,




                                                                                                                                                                                  --. , '.'   .~
                                                                                                                                                                                                    , . :.      '~"        "




                                      "
                                 ..   :.'   ...
                                                                    ~   .'




til

              i
      I
                                                  Lesend
l!.
~             It                      Groundwater Mollitorinc Phase IV
                                      Jn~ation B~s
~             ~
II>           !JI
:G    ~                               Boring with teE Below the RGA
~     l"lI
      t:J
      II>
      1t                12.811uimum TCE Concentration
      0
      :;-                             Below the RGA (qg/L)

      '"                O.6J          TCE Below Detection Limits,
                                      Concentration Estimated                                                        E=~tl
                                                                                                                                               1/4
                                                                                                                                                  ===:]1
                                                                                                                                          l000'Feet
                                                                                                                                                       1/2 MOe
I
I                                                            48

    4.4 SIGNIFICANCE OF MCNAIRY FORMATION LEVINGS MEMBER
I         Boring P4F8 reached a total depth of 107 meters (350 feet) below ground surface. The boring encountered
    a series of clays and silts from 41 meters to 45 meters (135 feet to 148 feet), tentatively correlated to the Levings
I   Member of Illinois. The Levings Member is a lignitic silt in the middle portion of the McNairy Formation in
    Dlinois. This member effectively serves as an aquitard in the middle of the McNairy Formation, separating the
    upper and lower portion. The middle McNaiIy member, defined by Moneymaker and Grant (1954) for Kentucky
I   as a series of silty, clayey sands, may extend from 41 meters (135 feet) to 82 meters (270 feet). Groundwater
    Monitoring Phase N Investigation borings were planned to be drilled to 46 meters (150 feet) depth below ground
    surface. Most borings did not penetrate sufficient McNairy thickness to confirm or deny the presence of the

I   Levings Member.



I                                                 5. CONCLUSIONS



I       Decisions regarding the Northeast Plwne and subsequent areas of contamination will be addressed in future
    Groundwater Strategy Documents.


I   5.1 VERTICAL AND HORIZONTAL EXTENT OF CONTAMINATION

    •    The off-site groundwater contaminant presenting a concern in the Northeast Plumes is TCE. The Northeast
I        Plume area of contamination extends off-site approximately 2.4 kilometers (1.5 miles).

    •    The southern edge of the Northeast Plwne complex was sharply defined. The downgradient tip, the northern
I        edge, and the upgradient end have lower contaminant concentration gradients and are less well-defined.

    •    The area of highest off-site TCE contaminant concentration lies along the southern edge of the plume and
I        parallels the Porters Creek terrace face in part.

    •    The only contaminant found off-site at significant concentrations was TCE. Highest 99'fc activities found
I        off-site were less than 60 pCiIL.               .

    •    The shallowest contamination found was in the terrace gravel in Boring 193-16. The deepest contamination
I        seen was at 150 feet in Boring P4H5 in the upper portion of the McNairy Formation.

    •    Within the RGA, the highest concentrations of TCE were generally found near the bottom. This trend

I   •
         appeared to become more pronounced as distance from the source area increased.

         The tendency for higher concentrations ofTCE to be found near the base of the RGA showed that individual

I        monitoring wells screened in only the upper portion of the RGA could not be relied upon to detect
         contaminants deeper in the aquifer.


I
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       5.2 IDENTIFICATION OF SOURCE AREAS
  I    •   Field results tentatively identified· at least eight different source areas and indicate tlie potential for others.

  I
                                                            .                           .

       •   The C-400 m:ea appears to be a major source for the Northwest i»ltimerather than the Northeast PlUme as
           originally believed. .DNAPL migrOtion,Patbs mayiillowithe C-400 area to also be.a source for the Northeast
           Plumeicomplex.              '                                                              '

  I    •
                       .              "                 .   :   .                       .   .

           Significant 99'J'cactivities, upU;43,922 pCiIL, 'were foundon;.sitejust north of C-400 in Boring P4G l.


  I    5.3 RELATIONSmp OF McNMRYTOREGIONALGRAVEL AQUIFER
                                                        .            :.        •      ,         I   '                        41




  I    •   The upper'portion of the McNairy Formation does contain TCE contamination; however, its areal extent
           appears limited to wiultmay be paleochannels of coarse-grained sedinientsand the fine-grained sediments
           adjacent to these channels.                                          .     ,

  I    •   There appears· to be a direct correlation between sediment'grain size and contaminant levels in both the
           lower continental deposits and.the McNairy Formation.

  I    •   Most of the identified conbuuinBtionin the McNairy ForDtation, is in areas where the Porters Creek Clay is
           absent. However, in.one boring significant. contamination was found in the upper portion of the McNairy
           where Porters Creek Clay existed.                    '
  I
       5.4 .NEW AND REMAINING DATA GAPS
  I    •
                                                                                      . .
           Both the upper ,and lower continental deposits Were shoWD:to have a complexintemal structure that could
                                                                                                                         "




           significantly influence migration pathS. Understanding the geometry of these· paths requires additional
  I        interpretation of existing data. In the area east of C-400, a groundwater divide must exist in the lower
           continentaldeposits. Additional workwillbe required to identify the nature of the divide.

  I,   •   Of84 soil and. 37 water samples collected in the' UCRS and tertace>gravels, only 3 terrace gravel water
           samples and 5 UCRS water samples conWned TeE. There was no' 'FCEm,the soil samples. Eventhough
           TCE' migrated through these sediments, to the RGA, few traces appear to remain,'. Without analytical
  I        evidence,definfugmigrationpathways throilghthe UCRS is'difficuit. .
                                                    .   .                 ' !
                                                                                       .

       •   ~northeast tip of the pIiuneconlplex andthe northern edgeiwillrequire additio~hlrilling!to fully resolve
  I        thaseplume:boundaries; Floodplains, Wetlands, and·.power lines wiUmakeresolution of,the·northem.edge
           problematic; .       .,                   ..               .

           ~uppei'.portiOO:~ofthe McNairy Formationis:8s complex, if not more complex, than the;lowercontin~ntal
  I    •
           deposits. Although the extent of McNairyoontaminationappears limited, predictmg its occurrence is
           difficult because ofthesinall scale ofthe affected gravelS. The role of the Levings Meinber was not
           resolved. Decisions on the extent of monitoring in the lower McNairy require determination of its
'·1        effectiveness asa banier betWeen the upper and lower McN8iry. This is Critical since any monitoring wells
           in the lower McNairy or the rubble zone above Mississippian bedrock will be difficult and expensive to
           install.
  I
 I·
        I
                                                                        50


                •    The ~meclianismtfor ~c,in grouridwater is not fully understood: the high activities of99'fc found
                     northwest ofC-400 require this information to predict the fate and transport of the contamination.
                        "                                                      "            .

                •     With  ei8ht source areas tentatively identified and several others indicated, the containment and remediation
                      strategy for·theNortheast,Plwne complex needstojbe reviewed'so that the most cost-effective methods are
                    . selected, and to preVent undesirable side effects when one portion of the complex. is treated without regard
    'I                to its effect onotlierpoitioIis of the contaminant mass.



    I
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    I

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    ,       .


.
    '.'1'....
            ,




    'I.
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                                             ACKNOWLEDGMENTS
I
    The authors wish to acknowledge the contribution of the following to the preparation of this report:
I                                                  Clausen, J. L.
                                                   Davis, K. R.
I                                                  Diefendorf, A. F.
                                                   Douthitt, J. W.
                                                   Millay, J. L.
I                                                  Miller,G.R.
                                                   Phillips, B. E.


I        Personnel for Grand Junction Office of the Oak Ridge National Laboratory
         Paducah Gaseous Diffusion Plant Environmental Restoration Division's Groundwater Monitoring Section


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                                                 REFERENCES
I
    CH2M Hill, 1991. Results of the Site Investigation, Phase I, KYIER-4, CH2M Hill Southeast, Inc., Oak
I      Ridge, Tennessee.

    CH2M Hill, 1992. Results of the Site Investigation, Phase II, KY/SUB/13B-97777C P-03/i99111, CH2M
I      Hill Southeast, Inc., Oak Ridge, Tennessee.

    Clausen, J. L., et aI., 1992a Resource Conservation and Recovery Act Part B Permit Modification for

I       Inclusion ofC-404 Low-Level RadioactivelHazardous Waste Landfill, KY1E-129, Martin Marietta Energy
        Systems, Inc., Paducah Gaseous Diffusion Plant.


I   Clausen, J. L., et aI., 1992b. Report of the Paducah Gaseous DlfJUsion Plant Groundwater Investigation
        Phase III, KYlE-ISO, Marietta Energy Systems, Inc., Paducah Gaseous Diffusion Plant.


I   Clausen, J. L., Zutman, J. L., and Farrow, N. D., 1993. Characterization ofthe Northwest Plume Utilizing
        a Driven Discrete-Depth Sampling System, KYIER-22, Martin Marietta Energy Systems, Inc., Paducah
        Gaseous Diffusion Plant.

I   Clausen, J. L., et aI., 1994. Final Report On Drive-Point Characterization of the Northwest Plume
        at the Paducah Gaseous DlfJUsion Plant, KYIER-66, Martin Marietta Energy Systems, Inc., Paducah
        Gaseous Diffusion Plant.
I   Driscoll, F. G., 1987. Groundwater and Wells, 2nd Edition, Johnson Division, St. Paul, Minnesota.

I   Geraghty and Miller, Inc., December 22,1994. IIAnalysis of Interim Remedial Alternatives for the Northeast
        Plume at the Paducah Gaseous Diffusion Plant, Paducah, Kentucky.1I Technical Memorandum to Don
        Wilkes, Jacobs ER, Paducah, Kentucky.
I   Jacobs Engineering Group, Inc., 1994. Technical Memorandum for Interim Remedial Action ofthe Northeast
         Plume at the Paducah Gaseous DifJUsion Plant, Paducah, Kentucky, Jacobs Engineering Group, Inc.,
I        Paducah Gaseous Diffusion Plant.

    Kearl, P. M., 1993. Colloidal Borescope Investigation at Paducah Gaseous DlfJUsion Plant, Martin

I       Marietta Energy Systems, Inc., Oak Ridge National Laboratory.

    McConnell, C. L., 1993. Geomechanics of Porous Media, unpublished.

I   Martin Marietta Energy Systems, Inc., 1994a. Field Sampling Plan for the Northeast Plume,
        DOE/ORl07-1222&D2, KYIER-46&D2, Martin Marietta Energy Systems, Inc., Paducah Gaseous

I       Diffusion Plant.

    Martin Marietta Energy Systems, Inc., 1994b. Interim Corrective Measures Work Plan for the Northeast Plume
         Paducah Gaseous DlfJUsion Plant Paducah, Kentucky, DOE/OR-1205&D2, Martin Marietta Energy
I        Systems, Inc., Paducah Gaseous Diffusion Plant.


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                                           REFERENCES (Continued)
I
    Science Applications International Corporation, 1993a. Record of Decision for Interim Remedial Action
I        of the Northwest Plume at the Paducah Gaseous DiJfosion Plant Paducah, Kentucky. DOE/ORl06-
         1143&04, Science Applications International Corporation, Oak Ridge, Tennessee.


I   Science Applications International Corporation, 1993b. Report for Environmental Audit Supporting Transition
         of the Gaseous DiJfosion Plant to the United States Enrichment Corporation. DOE/ORlI087&V4,
         Science Applications International Corporation, Oak Ridge, Tennessee.

I   Science Applications International Corportation, 1994 (draft). C-400 Process and Structure Review.
         KYIERWM-38, Science Applications International Corporation, Paducah, Kentucky.

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                                                BIBLIOGRAPHY


     Finch, W. I., 1967. Geologic Map of Part o/the Joppa Quad,.angle, McCracken County, Kentucky,
          GQ-652, U.S. Department Interior, US~ Geological Survey. .     .

     Geotek Engineering, 1979. ESOB660~ Project No. 79-687F (borkg logs only).· .

I    GeoTrans, Inc., :1989. NumerlcalModeling o/the Groundwater System Underlying the. Shawnee Steam
         Plant, Paducah, Kentucky, GeoTrans, Inc., Sterling, Virginia.

I    GeoTrans, Inc.~ 1990a. Numerical MOdellng:olGroundwater Flow at the Paducah Gaseous Diffusion
        Plant,Phases I and II, GeoTrans Project No. 30ts-obo,Report 09-43-910819006, GeoTrans, Inc.,
~I       Sterling, Virginia..                                .

     GeoTrans, Inc;, i 990b. Numerical Modeling of the Groundwater Flow at the Paducah Gaseous Diffusion
         Plant, Phase m: Calibrated Three-Dimensional Groundwater Flow Model- Final Report, prepared for
I        Martin Marietta Energy Systems, Inc., PaducahO~.us Diffusion Plant.
                                                      ~        .   .   ..'       .       .   '    .~ .

     GeoTrans, Inc., 1992.. Groundwater Modeling and Off-Site Containment Evaluation at the Paducah
I        Gaseous Diffusion Plant, prepared.for Martin Marietta Energy Systems, Inc., Paducah Gaseous Diffusion
        P l a n t . '

I                                                .                     -
     Kearl, P. M., et al., 1994. "Field CoinparisonMicropurging vs. Traditional Groundwater Sampling,"
         Groundwater Monitoring and Remediation, Fall 1994, 1~3-190.                       .
                                                                             .   -   .


I    Kalata, D.R,et al., 1981. Structural Frame~orkoftheMisstsiipp;,Embayment ~fSorithern IIIinois~ Dlinois
          State Geological Survey, Cire. S16.


I    Liakopolos; A. C., 1965. "Variation of the Permeability Tensor Ellipsoid in Homogeneous Anisotropic
         Soils," Water Resources Researchl(1),13S-140.


I    McConnell, C. L., -J993. Hydrologic Unit 3 and McNairY Project - Final Report. Prepared .for Martin
        Manetta Energy Systems, Inc.; P~ducah 6as~us Diffusion Plant. -,


1
'I
     Terran, 1992. Aquifor Assessment Report-Groundwater MonttPring Phase ill.; Aquifer Test Program
          West ofBuildtngC-333, Paducah Gaseous Diffusion Plant, Paducah, Kentucky, ReportNo. TK-9213,
          ESO 1 6 9 0 S . - -

     Willman, H. B., et al., 1975. Handbook ofIllinois Stratigraphy, lllinois State Geological Survey, Bulletin
          9S.

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          . , 26195..               DOE/ORl07-1339N2 & D2




          NORTHEAST PLUME
    PRELIMINARY CHARACTERIZAnON
               SUMMARY REPORT



                Vol. 2 Appendices




i    ",

                                                   \   .




                        July 1995



             · CLEARED FOR
               PUBLIC RELEASE.tArJ
                Al




             Appendix A

SITE EVALUATION OF SWMUs 193 AND 194
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                                                                 A2

       Geonics EM61

             The mstlWnent ~ed to perform the surveys at SWMU 193 was a Geonics EM61 trailer-mounted
       electromagnetometer. This instrument represents a relatively new application of electromagnetic geophysics
       specifically ,configured, for detection of buried metal targets. Use of a portable, coincident, time-domain
       transmitter and receiver lillow,discriminationbetween conductive earth materials and highly conductive metal
       targets. The,instnment is:relatively unaffected by cultural interferences and provides accurate depth of detection
       of buried met8l.                    '

           , The geophysical device measures a path approximately 1.22 meters (4 feet) wide at the surface, and the
       parallel survey lines were separated by abouH.83 meters (6 feet) at the ground surface. However, because the
       signal expands with dePth, the survey lines,aCtwllly overlap at about one meter below ground surface. hi this
      'way, the SWMU193 surveys provided complete coverage for targets greater than one meter below ground
       surface.                                      ,'.                                             ,       4




             TheEM61 generates 150 e1ectfomagnetic pulses per second and measure~ ihe response during the off-times
       bCtweenpulses. After each pulse, seoondaIy electromagnetic' fields are 'indUced 'briefly in moderately conductive
       earth,and for a longer time in the metal targets. , Between each .pulse, the EM61 waits until the response from the
       conductive earth dissipates:and then measureS the prolongedburiedotetal response. By sensing only the response
       from the bwied metal, the EM61 detects targets of both ferrous and nonferrous metals that would otherwise be
       missed..




•           The system measures two channels ofsecoridliryrespanse produced bytwoair-cored coils, 1 x 1 meters
       square (3.28 x 3.28 feet square). The'EM61 sensors consist of the same two air-coredeoils Configured with the
       Dlain eoilabout 15 em (5.9 inches) offthcground and the focusing coillocatCd 40 em (15~7,inches)abovethe
      ,maiIicoil.. Thesecond coil,wlUchprovides the Channel 2 data, is configured to provide little mno response to
       surface metal. A third channel of data is created bydifferencing,the response measured on the two channels.
                                      .                          '.   '.   <."
                                                                            ,       ,
                                                                                                ..   ,



            Readings fronl the two channels were collected eveIY20 em. fi. 9 inches) 8longthe survey path and recorded
      on a datalogger. The 20,cm (7.9 inch) increments were measured by a counter on the trailer wheels, which also
      triggered each EM pulse and initiated each data collection event

           ,Thedata weree1aborated using the Geonici; DAT61 program. Contour maps were produced using GRIDZO,
       mid editedinAutoCAD arutFreelarweGraphics.A1l deteCtedailomalieswere plotted on the contour maps; only
       Channell data was.'us~ for, illwitrationpu~posed»:.the report                      '

       Cone Penetr~meter

             The cone penetrOmeter uses a hydraulicsysWQ~ntained within:a 20~ton truck to' drive twO-inch ,diameter
       rods and sampling, devicesirito,the: ground(Fi~ Al ).The process generates virtuallY no soil Cuttings and
       appears to, be,asafe and! quick method of colleQt.Uls;shallow samPles at this: site. '
                   .   .                .                   \-             . : .




             Tw6boreh~les are8en~ated\1Vith eachl~tUion; FirSt, a rod is pushed into the ground with ,the "cone"
       attached to the ,tip: (Figure AI). "The electronic CQUe;generates an electroni~lithology log including tip resis.ce,
       local friction" inclination, pore pre8sUre,and e1ectri.o8l resistivity information. Changes in lithology ·and moisture

:e'    content were displayed on the resulting log.' AftOf the electronic logging was completed, the sens.or was
       withdrawn 'from the borehole ,and the borehole was grouted to the surface with high-sOlids,bet:t~tegrout.
                                                                                                                                                      . ,<

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                                                                                                                                                                                                      ·e·
                                                        A3

      The second, borehole was required at each location for the collection of samples. Soil samples were collected
 fiomeach,boringat 1.5,3, and 4.6 meters (5,10, and 15 feet) from ground surface using stainless steel collection
 sleeves housed:within stainless steel Shelby Tube-type samplers attached to the tip of the rods.

     -,When soi1'sampling was complete, the penetrometer todswere withdrawn:from the 'groUnd and the stainless
 steel collection: sleeves 'were exchanged for aretTactable well screen (water sampling tool). The water sampling
 toOlwaspushedtoa water-bearingzonedetennined from the electronic log lor. to ,refusal. The rods were pulled
 back:apprOximately one foot in order to mq)ose'the:screenfrom which water:samples could be 'colleCted. The rods,
 Were withdrawn upon completion and the'boreliole was grouted to the surface with high-solids benonite grout.

 GeoProbe

  _ The GeOProbC used a tiuck-mounfedhydraulic system to drive one-inch rods and sampling tools, into the
 ground. 'A hydraUlic hammer mounted on the rig enabled the rig to exert greater -penetration force than the cone
 penetrometer,to penetrate hardsecfunents. Upon camp.etion of sampling;,the1x>reholes were grouted to the
,surfaCe with high-solids,~ie gioot. The procedure TE-085 ''WaterSampuDg for Field Screening Using the
 GeoProbe and U2-CRT" was followed."                             ,

 Soil Sampling at SwMus193'aI1d 194 .'

       Soil sampling for the 'Site Evaluation of SWMUs 193 and 194 waS conducted using the procedure -
,CP4-SAM-4202, "Field Operations Procedurefor Subsurface SOil Sampling." , Upon removal from the borehole,
 each sample was screened for VOC contamination using a hand held photoionization detector (PID). Soil
 samplesfor volatile organicarullysis(VOAlwerecollected~bYuSingasolidmicro-coresampler to extract a plug
 ofsoilfiomJhe stainless steel collection sleeve. The soilmicro.:core, consisting ofapproximateJy five grams of
 soil, was, then placed into a 40 mL VOA vi~: containing 1OmLof deionized, water;Duplica~ VOC samples,
 specifically for TCE and 1,2-DCEanaIyses"were taken from each boring. Soil samples 'for PCBs, lead,
 chromimn,andcadmiwn analyses Were 'also taken' at selected JacatiODS; These samples were placed in separate
 containers and,a1lsamples were placed in a·coolet on ice for transport to the laboratory. An on-site Grand
 Junction geologist logged the soil cuttings and recorded the findings in the project logbook, as'well as on a
 borehole log'sheet.

 Water Sampling at SWMUs 193 alid194

     'Only~locati~ yielded enougliw8tertosample frOm: the cone penetrometer, ~lethe GeoProb'e was able
 to take water,samplesfrom14locatiOos. All water siullpling was in accordance with the,Martin Marietta Energy
 Systems~' Inc., Paducah, Kentucky, Quality and TechnicaI ServieesUivision TeChnicaI Procdure ,ES2,R-O,
 "Groundwater'Monitoring" (December 1, 1987) as it appliCdto the event. '

- AnalyticalMethods and QuBlityControl'for Site Evalu~tionofSWMUs B~3and 194 '

       During the ·field! effort, a totaIof 84 s~ilsamples, exchidmg Quauty assurancesamples~ ,were analyzed for
 VOCs 'mid'PCBs ,and 19,water samples wereanalyzcdforVOCs and TPRSOiI and water samples were analyzed
 in thefieldla1>oratory for specific parametersforVOCs, PCBs, and"TPH. All VOC anaIyses were performed
 using a Hewlett-PackardGC equipped with an electron capture detector (ECD) and a PID.TheGrand JunCtion
 procedure #TE-080" "HeadspaceSampling with a Gas Chromatograph," was followed.
                                                      A4

     Analyses for the chlorinated solvents, TCE and 1,2-DCE, were conducted using the ECD. BTEX
compounds were analyzed using the PID. Duplicate analyses were performed on all GC samples. VOC sample
preparation consisted of heating the soil or water sample in a constant temperature water bath for 30 minutes.
The analysis was performed by withdrawing an aliquot of headspace air from the sample vial and injecting it into
the GC. The resulting chromatogram was compared to a chromatogram generated from a set of known standards.
Detection limits for GC analysis were 1.0 ppb for TCE and 5.0 ppb for 1,2-DCE and BTEX.

     Immunoassay sample screening kits where used to analyze for PCB and TPH. Instructions contained within
the kits were used as procedures. The detection limits for these compounds were 1 ppm and 165 ppm,
respectively. An archive sample was collected to be sent to the PODP laboratory for conformation of
contaminants revealed by the screening kits. All analyses for metals and radionuclides were performed by the
PODP laboratory.

      Field quality assurance/quality control samples consisted of duplicate soil samples and field blanks from
boreholes 193-6, 193-17, and 194-3. Equipment rinses were taken after each sample for the first five samples
to verify that decontamination procedures were appropriate. After the decontamination procedure was verified,
equipment rinses were taken once a day for the remainder of the project. Numerous laboratory quality
assurance/quality control samples were also analyzed to verify the analyses.
      .~,~  ..... •• ..0..-_ .
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          ...
      --. . . -      -    -      -
                                         A5




                                                               Cone Penetrometer
                                                              ,Electronic Sensor




  llillliiilllllllll:
  I                                                         With Water Sampling
                                                           .Cone Penetrometer Rod
                                                            Screen Exposed ..




. Figure AI. 'COIiePenetrometer TIp With Electronic Sensor and Water Sampling Device.
\0
<
                     BI




                  AppendixB

GROUNDWATER MONITORING PHASE IV INVESTIGATION
                                                         B2

Drilling Method .

     The Field SamplingPlanfor the Northeast Plume called for the use of dual-wall reverse circulation drilling
with overshot casing as ;tb,e·preferred method for this investigation. In theory, the method offers several
advantitges:over conv~tional 'hollow steniauger drilling for environmental investigations. These include:

1.     PrOvidiitga fast and~efficieilt method for drilling explonitory borings while allowing continuous monitoring
       of fonnation' samples, .                                 "                     .

2.     Isolatingwaterbeariilgzones whi<:h significantly reduced the possibility of cross-contamination within the
       borehole dri~ to,thelackofannular space between the drill string and the borehole wall.

3.     Allowing,discrerewatersamples to be taken within the inner tube of the drill string.

4... Producing drill cutting volumes near theoretical hole size~

5.     Allowing geophysical-logging to be conducted inside, of the inner drill tube.

6.     AllOwing the borehole to· be pressure grouted as the drill string 'is withdrawn, thus preventing later cross-
       contamination between water bearing zones.

       In,practice, these advantages were generally true for this investigation with the following comments:

1. . The method was fast and:efficient for drilling and as discussed below, the groundwater sampling method
     aCcounted for most ofthe tiine·spent on each boring.

2.     The method seemea to ~Iy eliminate cross-contamination, as demonstrated by the fact that in many
       inStarices no water was being produced from a, specific interval evenaftei waiting for an hour or two, but
       by,pullitig the drill string up only a few feet to expose another zone, abundant water would enter the pipe
       makiDg;sampling possible.                   '.

3.     Sample resultsforgro~ obtained ,from intervals just a few feet apart often sho~ coniaminants in
       on~,m~aland n~)Dein th~,next, supportingthe contention that cross-contamination was not occurring.

4. 'Drill cutting.volunies may approach theoretical hole size; howevCr,the slurry producCd by mixing of
    cuttings with groundwaterandl drilling water often increased volumes dramatically. POOP Waste
    Management was not eqwpped·tohandiethe,resultingslurry and a dewatering system was mobilized to
    separaietheliquids and solids. The systenireduced the number of drums by 43 percent.

5.       GeophysicaHogs WereJimited,totht>se wbichcouldbe.perfonned inside a metal     casing,(e~g.,radiation logs);
     . , however, attenuation ,by the metal casing was a factor for all logs.    .            ..           .

6~     Pressure,groutirigw~very well and was relatively simple. The v~cal distribution of contaminants and
       aquifersatPGDP made:tliis a very desirable attribute in preventing cross-contaminationof aquifers.
                                          B3



                                                               ..
                                               Continuous sample discharge   .




            Air In      ..

                                                  OUter pipe
                                                  Inner pipe




           -                                   -


Figure Bl. Diagram of Dual-Wall Reverse Circulation Drilling Method. (Driscoll,1987)
                                                           B4

      The dual;.wall!reverse circulation system consisted of two concentric strings of pipe (Figure B I). Top head-
drive rotmy power,and a tricone bit were used ro advance. the drill string. An air compressor and diaphragm' pump
provided the drilling flUid as,either air or air/water mist The driller regulated the air/water mix depending on the
watercontenfof the interval being drilled; for instance, if the interval contiUnedfree water, then only air was
injected 'Fhe .fluid was forced doWn the annulus.betweenthe two pipe walls and exited through the 'bit into the
borehole. 'Fhe fluid assistedwithctitting theformation and returned through 'the center tube carrying the cuttings .'
to the surface;. ThC drilliitg rate 'averaged about 45.7 cmperminute{l.5 feet per minute)' and the cuttings return
rate was about 18.3 meters per:secood (60 feet'per second); thus,there was very little travel time for cuttings to
reach the surface .andthegeoiogist was able to detect lithologic:bteaks almost as, soon as the bit encountered
them. The drilliogfluidonlycontacted the borehole waUatthe bit and since the bit outer diameter was slightly
larger than the driUpipe, the cuttings closed around the pipe significantly reducing the potential for vertical cross-
contamination.. At the surface; the·cuttings were routed from,the·top·head to a cyclone·separator and discharged
into 55-gallon drums. The cirunlswere situated in a mud tank in order to catch'any overflow. OnCe filled, the
dnuns were labelled and transported to a staging area at the 'decontamination facility. Excess water in the mud
tanks was pumped into a truck-mounted polyethylene tank and transported to the staging area.
         Specific procedures for this investigation are referenced in the Field Sampling Plan for the Northeast
Plume (MMES, I994a).The following generalprocCdure was followed in drilling.: and sampling the boreholes:

l. . The borehole was advanced, as described above, to the firstwatersampling~point--generally asandy zone
      in the UCRS or the rop of the RGA. 'I?rilf cuttings were oollectedcontIDuously 80dsamples were
      consolidated into five-foot intervals for description and archival. The geologist ,prepared a borehole
      summary with a detailed lithologic desmption. Work progress was recorded in a field logbook. At the
      beginning of the investigation (boringsD06,D07, D08, D12,and DI2A), overs~otcasing was advanced
      to within a few feet of the bit prior to water sampling as an ad~ed means of isolatfug the interval to be
      sampled. The use oftheovei'shotcasinggreatly increased.the.8moun!.of driilingspoils because it required
      the drill string to be removed' and reinserted· in the boring (tripped) and the boring had to be c1eared'of
      excess water and cuttings each time a trip was made. Use· of the overshot casing also required more time
    · for installation and,cieaning. The use 'of the overshot casing was discOotinued after a field experiment
     .showedthat tIWre were essentially no differences in'contaminantconcentrations in water samples· collected
      with or without 1he use:oftheovershot casing and that geophysical logs run inside the dual tube were very
     ·similar to those run with only the overshot casing in ·place.
     ·         .t .           .   .'   .   .           .              . "



2:'Once,~e i.nt.mra}:,to,be sampl'oo was reached, excess water;and cuttings were flushed from the,sy~tem.and
       a bladder pump and packer, assembly w.aS lowerC(Mownthe inner drill tube. 'The packer was inflated to seal
     · off the interval to be samplcxt 'The isolated interval· was purged'with the bladder pump and water quality
       parameters were monitored ro determine when purging was complete.. The interVal was considered purged
       once temperature, pH~,andconductivityhad stabilized for three consecutive readings. The'requisitewater
       samples were collected in -the appropriate containers and placed in a cooler on ice for transport to the
       laboratory. All samples were labelled.and documentedin;accordancewithPGDP field operating;procedures~
       Some intervals were sampled with.a,bailer instead of the pump/packer assembly if there was insufficient
     .water to:pump:asample;When samples were collected with a bailer, parameler$ were not measured. This
     ·condition;commonly occurred in the-upperUCRSandoccasionally at other intervals (Table B-1 ).

3.       After,samplingwaS;completed at an interval, the sampling equipment was removed for decontamination and
         drilling resumed until.thenext interval robe sampled was reached. Water samples were generally collected
         in the following zones: the UCRS; the rop, middle, and bottom of the RGA; and the top of the' McNairy
         Formation. Additiotiahamples·were often collected from othersandy intervals encountered in the McNairy.
         Therefore,thestQp-811d-godrilling and sampling was repeated as many as eight times per boring. Water
                                                        BS

     sampling was generally completed for each interval in one to two hours. Thus, it often took over 12 hours
     to complete all of the water sampling for a single boring. The drill rig and drilling crew were on standby
     during the sampling.

4.   Upon reaching the total depth to be drilled, generally about 4S.7 meters (ISO feet), geophysical logging
     commenced. All boreholes were logged with a natural gamma probe and most were logged with a neutron-
     neutron tool. A few boreholes were logged with a gamma-gamma density probe; however, this log was
     eliminated early in the project as the logs seemed to be of little use. The combination of gamma and neutron
     logging provided an excellent aid in correlating the borehole lithologic logs.

S.   All boreholes were abandoned using high-solids bentonite grout as backfill. The grout was mixed at the
     surface and pwnped down the center of the drill string as the drill pipe was raised, thus sealing off all water
     bearing zones and preventing cross-contamination of the aquifers. The upper part of each borehole was
     usually sealed with bentonite chips. Chips were used to absorb excess water in the borehole and prevent
     borehole fluid from being displaced onto the ground surface by pressure grouting. After grouting was
     complete, the drill rig was moved to the decontamination facility for cleaning and the borehole was staked
     for land surveying.
                                                     86

           Table B-1. Groundwater Monitoring Phase IV Investigation Borehole Summary.

                                   Total    Sample
Borehole                                              Geophysical   Solid Waste!
           Start Date   End Date   Depth,   Depth,                                            Comments
  ID
                                     ft       ft           Loss     Liquid Waste

 P4A2       07126194    07127194    ISS       59          Gamma       5 drums      Attempted to sample at 38 ft, but
                                              69          Neutron     350 gal      insufficient water.
                                              89
                                             119
                                             138

 P4A3       08/04/94    08/05194    ISS       65          Gamma         NA         Tried to sample at 115 and 120 ft,
                                              75          Neutron       NA         but prevented due to heaving
                                              90                                   sand.
                                             140

 P4B3       08/06194    08110194    ISO       59          Gamma         NA         Performed dual sampling with
                                              74          Neutron       NA         packer and with micropurge.
                                              89
                                              94
                                             119
                                             139

 P4B4       08/10194    08116194    ISO       6S          Gamma       6 drums      Borehole was started at end of
                                              80          Neutron     2S0 gal      one work period and finished
                                              9S                                   after a 4 day break.
                                             119
                                             137

 P4BS       08/17194    08/19194    ISO       60          Gamma       4 drums      No overshot casing used.
                                              68          Neutron     2S0 gal
                                              84
                                             118
                                             139

 P4C2       08124194    08125194    ISO       62          Gamma       4 drums      No McNairy water samples
                                              78          Neutron     2S0 gal      coUected
                                              96

 P4C4      071 I S194   07122194    lSI       70          Gamma       S drums      Had to trip hole for lost pump
                                              80          Neutron     800 gal      parts.
                                             100
                                             liS
                                             ISO

 P4CS      07/09194     07/12194    ISO       20          Gamma       7 drums      No McNairy water samples
                                              70          Neutron     SOO gal      coUected.
                                              80
                                              9S

 P4C7       07114/94    07116194    ISO       SO          Gamma       4 drums      No overshot casing used.
                                              S9          Neutron     500 gal
                                              69
                                              93
                                             117
                                             ISO
                                                       B7

                                            Table B-1 (Continued)

                                   Total      Sample
Borehole                                                Geophysical   Solid WB.JJW
           Start Date   End Date   Depth,     Depth,                                            Comments
  ID                                                       Logs       Liquid Waste
                                     ft         ft

 P4C9      07112/94     07/13/94    ISO          68         Gamma       4 drums      No overshot casing used.
                                                 79         Neutron     700 gal
                                                 99
                                                149

P4CI0      08/19194     08122194    ISO          60         Gamma       5 drums      No overshot casing used.
                                                 69         Neutron     400 gal
                                                 78
                                                125
                                                139

 P4D4      07109194     07112194    ISO          78         Gamma       6 drums      No overshot casing used.
                                                 91         Neutron     500 gal
                                                107
                                                119
                                                133

 P4DS      07128194     08/02194    ISO         79          Gamma      11 drums      Drill rods were left in hole
                                                89          Neutron     500 gal      07128194 to 08/02194 during work
                                                99                                   break.
                                               120
                                                ISO
 P4D6      06123194     06127194    147         25          Gamma       5 drums      Overshot casing used.
                                                71          Neutron       NA
                                                88          Density
                                               114
                                               138
                                               147

 P4D7      06/22194     06125194    ISO         52          Gamma      22 drums      Overshot casing used.
                                                65          Neutron      NA
                                                94          Density
                                               100
                                               108
                                               130
                                               145

 P4D8      06127194     06/30194    ISO         54          Gamma      10 drums      Overshot casing used.
                                                81          Neutron     300 gal
                                                94          Density
                                                99
                                               104
                                               139
                                               ISO
                                                       B8

                                            Table B-1 (Continued)

                                   Total      Sample
Borehole                                                    Geophysical   Solid waste!
           Start Date   End Date   Depth.     Depth.                                                Comments
  ID                                                           Logs       Liquid Waste
                                     ft         ft

 P4D9      06128/94     06130194    ISO         SO           Gamma          S drums      No overshot casing used.
                                                 88                           NA
                                                 98
                                                140
                                                ISO

P4DlO      07107194     07109194    ISO         80           Gamma            NA         No overshot casing used.
                                                90           Neutron          NA
                                               100           Density
                                               120
                                               141
                                                ISO

P4Dll      07107194     07/08194    ISO         78           Gamma          6 drums      No overshot casing used.
                                                86                          600 gal
                                               138
                                               150

P4Dl2      07112194     07115194    150         4S           Gamma            NA         Overshot casing to 110ft-
                                                SO                            NA         gamma log both with and without
                                               130                                       overshot casing.
                                               140
                                                ISO

P4Dl2A     07122194     07125194    ISO         49           Gamma            NA         Overshot casing to 110 ft.
                                                79           Neutron          NA
                                                89
                                                98
                                               122
                                               129
                                               143

 P4El      10122194     10124194    140         60           Gamma          6 drums      No overshot casing used.
                                                70           Neutron        200 gal
                                                80
                                                95
                                               120
                                               136

 P4E2      08/04194     08106194    ISO         45           Gamma          7 drums      No overshot casing used.
                                                60                          SOO gal
                                                85
                                               105
                                               125
                                               140

 P4E4      07128/94     08/02194    117         80           Gamma                       No overshot casing used. pipe
                                                90                                       stuck in hole over work break.
                                                95
                                                        89

                                             Table B-1 (Continued)

                                    Total      Sample
Borehole                                                 Geophysical   SolidWastei
           Start Date   End Date    Depth,     Depth,                                            Comments
  ID                                                        Logs       Liquid Waste
                                      ft         ft

 P4E6      07123194     07127194     151         SO          Oamma       7 drums      No overshot casing, bailed four
                                                 SO          Neutron     250 gal      out of six samples.
                                                 90
                                                 100
                                                 105
                                                 140

 P4E7 .    09/07194     09/09194     150         44          Oamma       5 drums      No overshot casing, bailed throe
                                                  SO         Neutron     400 gal      out of six samples.
                                                  S9
                                                  96
                                                 127
                                                 145
 P4ES      10/13194     101 ISI94    ISS         SO          Oamma       6 drums      No overshot casing used.
                                                 90          Neutron     400 gal
                                                 97
                                                 ISS
 P4FI      10llS194     10120194     16S         70          Oamma      16 drums      No overshot casing used.
                                                 SO          Neutron     SOO gal      Abundant heaving sand in
                                                 90                                   McNairy.
                                                100
                                                140
 P4F2      10/10194     10/12194     170         70          Oamma       5 drums      No overshot casing used.
                                                 SO          Neutron     350 gal
                                                 90
                                                100
                                                140
 P4F3      09120194     09122194     150         70          Oamma       6 drums      No overshot casing used, bailed
                                                 80          Neutron     300 gal      two out of five samples.
                                                 90
                                                100
                                                140
 P4F4      10120/94     10121194     165         SO          Oamma       6 drums      No overshot casing used.
                                                 90          Neutron     200 gal
                                                100
                                                140
 P4FS      10/07194     10/08194     ISO         70          Oamma         NA         No overshot casing used.
                                                 SO          Neutron       NA
                                                 90
                                                130
                                                150
                                                       BI0

                                            Table B-1 (Continued)

                                   Total      Sample
Borehole                                                 Geophysical   SolidWute/
           Start Date   End Date   Depth,     Depth,                                             Comments
  ID                                                        Logs       Liquid Waste
                                     ft         ft

 P4F6      09/07194     09109194    150         60           Gamma       5dmms        No overshot casing used, bailed
                                                80           Neutron       NA         two out of six samples.
                                                90
                                               100
                                               120
                                               140

 P4F7      09/14194     09115/94    150         60           Gamma       5dmms        No overshot casing used, bailed
                                                70           Neutron     800 gal      three out of six samples.
                                                80
                                               100
                                               120
                                               150

 P4F8      09/27194     09129194    350         60           Gamma      48dmms        No overshot casing used.
                                                70           Neutron    1000 gal
                                                80
                                                90
                                               120
                                               149
                                               200
                                               260
                                               3S0

 P401      08122194     08123184    155         70           Gamma       4dmms        No overshot casing used.
                                                80           Neutron     SOO gal
                                                90
                                               100
                                               120
                                               ISO

 P4G2      08/10194     08/17194    160         40           Gamma      11 dmms       No overshot casing used, bailed
                                                6S           Neutron     SOO gal      four out of seven samples.
                                                80
                                               100
                                               120
                                               140
                                               150

 P403      08/18194     08120/84    ISO         80           Gamma       4dmms        No overshot casing used.
                                                90                        NA
                                               110
                                               130
                                               ISO

 P40S      08124/94     08125194    ISO         80           Gamma       5dmms        No overshot casing used, bailed
                                                90           Neutron     SOO gal      one sample.
                                               100
                                               120
                                                           Bll

                                                Table B-1 (Continued)

                                     Total        Sample
 Borehole                                                    Geophysical   Solid Waste!
            Start Date   End Date   Depth,        Depth,                                             Comments
   ID                                 ft·                         Logs     Liquid Waste
                                                    ft

   P407      08/14194    08115194     150            69          Gamma       5 drums      No overshot casing used, bailed
                                                     77          Neutron     250 gal      two out offour samples.
                                                    137
                                                    143

   P4G8      09/09194    09/10194     150            70          Gamma       5 drums      No overshot casing used, bailed
                                                     80          Neutron     700 gal      one sample.
                                         -          100
                                                    120
                                                    140

   P4G9      09/12194    09/14194     150           70           Gamma       5 drums      No overshot casing used, bailed
                                                    80           Neutron     800 gal      two samples.
                                                    90
                                                    llO
                                                    150

  P4011      09/15194    09121194     150           60           Gamma       5 drums      No overshot casing used, bailed
                                                    70           Neutron     250 gal      one sample. Work break
                                                    80                                    09/17194 through 09120194.
                                                    95
                                                    llO

  P40l2      10/05194    10/07194     150           61           Gamma         NA         No overshot casing used.
                                                    67           Neutron       NA
                                                    80
                                                    90
                                                   100
                                                   132

   P4Hl      09/09194    09110194     100           34           Gamma       5 drums      No overshot casing used, bailed
                                                    39                       300 gal      two samples.

   P4H5      09124194    09127194     150           60           Gamma       7 drums      No overshot casing used.
                                                    7S           Neutron     350 gal
                                                    85
                                                    95
                                                   120
                                                   150

   P4H6      09/12194    09/13194     100           57           Gamma      4 drums       No overshot casing used.
                                                    69           Neutron    250 gal       No ROA.
                                                    79

   P4H7      09/22/94    09124194     150           65           Gamma       S drums      No overshot casing used.
                                                    80           Neutron     300 gal
                                                    90
                                                   100
                                                   120
                                                   140
"NAil indicates information is not available.
                                                       BI2


Laboratory Analysis

      Water samples were transported to the POOP Environmental Restoration (ER) Division sample receiving
and storage area immediately after collection. A typical sample included a set of triplicate 40·mL vials for the
field laboratOIy, a set of duplicate 40·mL vials for the POOP laboratory, and a sample for 99'J'c analysis. The
samples were logged into the POOP data base by POOP ER personnel and placed into storage at 4 C. The     0


triplicate 40·mL vials for the field lab analysis were turned over to the Grand Junction field lab technician and
the other samples were transported to the POOP laboratory. Triplicate samples were analyzed for VOC
contamination in the field lab using a Hewlett·Packard 5890 GC equipped with an ECO and a 30 m Mega Bore
capillary colwnn. The samples were analyzed for the specific target compounds, TCE, cis· and trans· 1,2·0CE,
 I,I·DCE, 1,2-dichlorethane (DCA), I,I,I·TCA, and carbon tetrachloride. Sample preparation consisted of
decanting 20 mL of sample from the vial and heating the remaining water sample in a constant temperature (SO°
C) water bath for 30 minutes. The sample was analyzed by withdrawing a 100 uL aliquot of headspace from the
sample vial and injecting it into the GC. The resulting chromatogram was compared to a chromatogram
generated from a set ofknown standards and the oontaminant concentrations were calculated. The standards were
prepared and analyzed using the same procedure used for sample analysis. All three vials from the triplicate set
were analyzed in order to evaluate consistency in sampling and analysis methods. Detection limits for GC
analysis were 1.0 ppb for TCE and S.O ppb for 1,2·0CE. Dilutions were occasionally necessary in order to keep
the results within the calibrated range of the OC. Dilutions were performed by injecting a smaller aliquot of the
headspace using a syringe with a lower capacity. The results were then corrected according to the volume·to-
volume ratio of the small syringe to the 100 uL syringe (e.g., injection with a 10 uL syringe required the result
to be multiplied by 10 to compensate for the dilution).

Waste Handling

      Waste generated by the project consisted of 413 drums of drill cuttings in slurry form, 2 drums of personal
pIotectiveclothing, 37 drmns of miscellaneous field waste (plastic sheeting, plastic lining, absorbent pads, etc.),
1 drwn of field laboratory waste, and approximately SO,OOO gallons of pmge water, wash water, and drilling fluid.
 The pre-project estimate for solid waste was about 4 drmns per ISO·foot borehole and the average for the project
was about 7.7 drums per 4S.7·meter (ISO·foot) borehole. The 3S0·foot boring produced 48 drums of drill
cuttings due to heaving sands and abundant water in the McNairy Formation. After the drill cuttings were
processed through the waste separation system, there were 237 drums of drill cuttings, constituting a 43 percent
reduction in the number of waste drums. Discounting the drums from the 106.7·meter (3S0·foot) borehole (.43
x 48 =27) leaves about 210 drmns of cuttings for 47 boreholes, or about 4.S drums per ISO·foot borehole, which
is very close to the pre·project estimate (Table B.2).
                                                        B13

                                    Table B-2. Solid Waste Drum Record.

                                  No. drums prior       Average no.        No. drums         Average no.
                                     to waste           of drums per       after waste       of drums per
                                    separation             boring          separation           boring
         Drums from 47
         borings 150 feet               365                   7.7              210                4.5
         each
         Drums from 1
         boring 350 feet                 48                   48               27                 27
         deep

      Waste generation from the dual-wall reverse circulation drilling method consistently exceeded pre-project
estimates due to the air lift pumping effect in water-bearing zones and heaving-sand zones. Additionally, when
the air pressure was released to make pipe connections, the head differential between the unconsolidated
formation and the inside of the drill string forced fonnation water up the inside of the dri1I string producing extra
water and cuttings. The cuttings were also of a much different consistency than the traditional drilling spoils
generated from hollow stem auger drilling. The cuttings were all slurry-like and the Waste Management
Department at POOP was not equipped to handle waste in slurry form. All waste had to be separated into solid
and liquid fractions. Efforts to separate the liquid and solid fractions by gravity settling and adding flocculents
were ineffective. Thus, a centrifuge-based material separation system was procured to separate the liquid and
solid fractions of the cuttings. Layne-Northwest researched the system and provided background information.
A system was mobilized in mid-October for waste separation. The system consisted of three off-the-shelf units
which, when run in series, were capable of separating solids from liquids down to about a five-micron particle
size. The equipment was leased from SWACO Geolograph and a demonstration for PODP personnel was
arranged at SWACO's Oklahoma City Plant in September. Thus, Health and Safety and Health Physics concerns
were addressed prior to mobilizing the system.

      The separation process was initiated by emptying the 55-gallon drums of drilling spoils directly into a linear
shale shaker and separating the first cut to 40-100 mesh. The processing continued to a mud cleaner consisting
ofseveral4-inchhydrocyclones over a mini-shaker using 180-210 mesh screens. Emuent from the mud cleaner
was treated by centrifuge, a high volume/high speed sequence which separated solids from liquids down to the
five-micron range. An SO-barrel agitated tank was used as a common compartmentalized holding vessel during
the various phases. Pumps were used to circulate the emuent between the system components. Storage of the
fmal emuent (liquid) and solids coming off the mud cleaner, shaker, and centrifuge was either pumped into
polyethylene tanks (liquid) or stored in drums (solids). The waste was sampled for waste characterization and
the containers were subsequently turned over to Waste Management for processing or storage, depending upon
the results of waste sampling. After waste separation was completed, 237 drums of solid waste and 20,000
gallons of water were turned over to PODP Waste Management for processing and/or storage.

      The biggest time limitation to waste separation was the feed rate for waste into the system and
containerization and labelling of the output. The system was capable of processing over 25 gallons per minute,
but only about 20-30 drums could be processed in a day because the drums had to be emptied individually into
the system and then the solids had to be recaptured in drums at 3 separate output locations. The cuttings were
processed in batches to avoid mixing waste from different boreholes. Thus, it took approximately 25 days to
process all of the dri1I cuttings generated by the investigation.
        Cl




     AppendixC

RESULTS OF ANALYSES
                                                       C2



     The enclosed disk contains analytical data gathered from the two-phased Northeast Plume Investigation.
The text file "Read Me" give instructions to recall the data. Below, headings and acronyms used in the data
presentation are explained.

DEPTH represents feet below the surface from which the sample was taken.
HORIZON represents geological or hydrogeological unit from which the sample was taken.
SAMPLING MEDIA represents the type of sample that was taken.
SAMPLING METHOD represents the method in which water samples were taken (pumped or bailed) during the
Groundwater Monitoring Phase N Investigation.

GC                        gas chromatograph
J                         estimated
LCD                       lower continental deposits
RGA                       regional gravel aquifer
U                         undetected
UCD                       upper continental deposits
UCRS                      upper continental recharge system
X                         comment is present in the ERWM data base, the comment usually indicates bubbles
                          were present in the sample

      The data presented here has been checked for clerical errors. However, it has not been submitted for formal
verification and/or validation. The analytical quality control for the field GC is described in Appendix A and
AppendixB.
    01




 Appendix D

BORING LOGS
        0
                                        4'-4.5' and 5'-5.5'

                                        Fill: brown (10 YR 5/3) soft, very moist, predominantly
                                        silty claylclayey silt. abundant small root hairs, scattered
        5                               cmbonaceous debris, abundant fine grained sand and
                                        gravels to 118".


       10                                   8'-8.5'

                                            Fill: daJk sreenish gray (5 GY 4/1) soft, wet. predominantly
                                            silty sand, with scattered black possible very heavy
                                            hydrocmbon appears asphaltic.
       15
                                            10'-10.5'
l'
(j:j
'-"
                                            Fill: brown (10 YR 513), soft, moist, abundant intermixed

~
       20                                   sand, and small angular gravel, grading to a silty clay
                                            from 10.25' to 10.5'. No odors.
en

!      25
                                            15'-15.5


g                                           SM - Sandy silt: mottled lisht brownish gray (10 YR 612)
                                            and yellowish brown (10 YR 618), firm, moist, sand is fme
                                            grained, subangular, scattered zones with black, possible MoO
       30                                   mineralization.




       35




       40




       45

            o   4     8      12   16   20
                Resistivity (ohm-m)




                                              193-1
            0
                                                 5'-5.5'

                                                 CL-Clayey silt: light brownish gray (2.5 Y 6/2),
            5                                    firm, moist, mottled with a yellowish brown
                                                 (10 YR 5/8) FeO stain, abundant zones with
                                                 possible MnO mineralization

                                                 10'-10.5'
           10
                                                 CL-Clayey silt: light brownish gmy (2.5 Y 612),
                                                 soft, vety moist, fairly homogeneous, scattered
                                                 dark yellowish brown (10 YR 4.6) FeO stainins,
           15                                    common small open pores <1 mm, wet in close
                                                 proximity to the pores.
'Z'
c!
........
                                                  15'-15.5'


i
til
           20                                    CL-Clayey silt: mottled daIk yellowish brown
                                                 (10 YR 4/4) and light brownish gray (10 YR 612),
                                                 soft, vety moist to wet in some zones, scattered
]          25
                                                 FeO staining.


g
           30




           35




           40



           45

                o   4    8     12    16   20
                    Resistivity (ohm-m)


                                               193-2
        0
                                           5'-5.5'

                                           CL-Clayey silt: yellowish brown (10 YR 5/6),
                                           soft, wet, common yellowish brown (10 YR 516)
        5                                  FeO stain, abundant zones with possible MoO
                                           mineralization.
                                           10'-10.5'
       10                                  CL-8ilty clay: pale brown (10 YR 6/3), moUled
                                           browish yellow (10 YR 618), firm to soft, moist,
                                           common FeO staining, scattered zones with
                                           possible MoO mineralization, occasional fine
       15                                  grained chert and quartz.

j
ct:l
                                           15'-15.5'
'-"
                                           8M-Sandy silt: color 88 above, firm, moist,
 §     20                                  sand is predominantly vety fme to fine grain,
1l
Vl
                                           with occasional medium grained, subanguIar,
                                           appears to be occassional dark accessolY

!      25
                                           minem1s, majority of the sand is quartz with
                                           common red chert.

!
       30




       35




       40



       4S

            o   4    8     12    16   20
                Resistivity (ohm-m)

                                           193-3
             0
                                                   5'-5.5'

                                                   CL-Clayey silt: n:ddish brown with light
                                                   gmyish brown (10 YR 612) moUle, only
             5
                                                   slightly clayey, locally vel}' fine gmined,
                                                   clear to milky quartz sand, common hemitite
                                                   stained at various intervals, some limonite
                                                   staining, soft, crumbly.
            10
                                                    10'-10.5'

                                                    CL-Silt: color as above, trace clay,
                                                    abundant root hairs, mottled from Fe
            15
                                                    staining, some scattered 1 mm clear
                                                    to amber quartz gmins, dJY, crumbly.
    j
    -
    t.;:;
                                                    15'-15.5'

    ~
            20
                                                    CL-Clayey silt: light brownish gmy (10 YR 6/2),
    en                                              mottled from Fe n:ddish brown, occasional

    !       25
                                                    limonite nodule approx. 1 mm across, locally
                                                    very, Fe staining throughout entire interval.


    !
            30




            35




            40



            45

                 o   4     8      12   16   20
                     Resistivity (ohm-m)


                                                 193-4
I
      0
                                            5'-5.5'

                                            CL-Clayey silt: light brownish gray (10 YR 712),
      5                                     mottled teddish brown from Fe, stiff, dry,
                                            homogeneous, abundant vel}' daJk brown
                                            hemitite staining locally.
                                            10'-10.5'
      10
                                            CL-Clayey silt: light gray brown (10 YR 618),
                                            scattered light teddish brown mottle, occasional
                                            1 - 2 mm clear to milky to translucent quartz
      15                                    grains, occasional root hair, some scattered daJk
                                            hemitite staining, slightly micaceous, soft, dry.
-=-
c§
--                                          15'-15.5'


i
Vl
      20                                    GP-Gravel: 5 - 10 mm, limestone gravel in
                                            a daJk reddish brown clayey silt matrix,
                                            scattered chert throughout.

!     25


!
      30




      35




      40



      45

           o   4     8      12   16   20
               Resistivity (ohm-m)
                                           193-5
       0
                                           5'-5.5'

                                           CL-Clayey silt: light blOwnish gray (2.5 Y 6/2)
       5                                   finn. moist. mottled with a yellowish blOwn
                                           (10 YR 516) FeO stain, scattered zones with
                                           MnO? mineralization, slightly sandy with mediwn
                                           to coarse grained chert, occasional gravels to
                                           1/8" and FeO staining most prevalant around the
      10
                                           chert gravels.
                                           10'-10.5'

                                           CL-Silty clay: light blOwnish gray (10 YR 612),
      IS                                   with abundant yellowish blOwn FeO staining
                                           and mottling. vel}' fum to stiff. fairly dense.
J
-                                          slightly moist. scattered possible MnO
                                           mineralization, occasional vel}' fme grains

i
til
      20                                   of subangular chert.
                                           15'-15.5'

!     25
                                           CL-Clayey silt: mottled light blOwnish gray
                                           (10 YR 612) and yellowish blOwn (10 YR 518).

!                                          stiff. baoe moist, occasional vel}' daIk blOwn
                                           to black MnO mineralization, common vel}' fine
                                           to fine subangular chert with some quartz. sand
      30                                   content increasing in the 15.5'-16' inteIVal.



      35




      40




      45

           o   4     8      12   16   20
               Resistivity (ohm-m)

                                                 193-6
     0
                                             5'-5.5'

                                            CL-Clayey silt: light brownish gray (10 YR 612),
                                            fum. slightly moist, common daIk yellowish brown
      5                                     (10 YR 4/6) FeO staining, occasional zones with
                                            MoO mineralization.
                                            10'-10.5'

     10                                     CL-Clayey silt: grayish brown (10 YR 512),
                               -            moUled with daJk yellowish brown (10 YR 4/6)
                                            FeO stain. abundant MoO staining and zones
                                            of minem1ization, occasional vel}' fme
     15                                     subangular chert grains, fum-soft, moist

Z'                                          15'-15.5'


-
&                                           CL-Clayey silt: mottled grayish brown (10 YR 512)


i
Vl
     20                                     and daJk yellowish brown (10 RY 518-4/6) vel}'
                                            fum. slightly moist, yellowish brown moUled seems
                                            to predominate, FeO staining, abundant vel}' daJk
                                            brown to black MoO staining and minem1ization,
!    25                                     occasional grains of vel}' fine to fine subangular chert.


!
     30




     35




     40



     45

          o   4      8      12   16   20
               Resistivity (ohm-m)

                                           193-7
     0
                                          5 1-5.5 1

                                          CL-Silty clay: light grayish brown to light
     5                                    yellowish brown (10 YR 612-(/4), soft,
                                          vety moist, yellowish brown color appears
                                          to be FeO staining, occasional black
                                          carbonaceous debris.

     10                                    101-10.5 1

                                           CL-Clayey silt: mottled light yellowish brown
                                           (10 YR 612) and yellowish blOwn (10 YR 5/8),
                                           fum. slightly moist, occasional black MnO
     15
                                           mineralization.
~


-
J!
§    20
                                           151-15.5 1

                                           CL-Clayey silt: mottled light yellowish brown
                                           (10 YR 612) and yellowish brown (10 YR 5/6),
11
en                                         fum. moist, common FeO staining, scattered
                                           fme to mediwn gmins of subrounded chert
!    25
                                           with some quartz.

g
     30




     35




     40




     45

          o   4     8      12   16   20
              Resistivity (ohm-m)
                                          193-8
o   4     8      12   16   20
    Resistivity (obm-m)
                                193-9
         0
                                                  5'-5.5'

                                                  CL-CIayey silt: gray (5 Y 6/1), firm, crumbly,
         5                                        slightly moist, exhibits a blocky structure,
                                                  common small open pores <1 mm, appears
                                                  re-woIked to some degree, possible Fll..L.
                                                  10'-10.5
        10
                                                  CL-Clayey silt: mottled brown (10 YR 6/3)
                                                  and yellowish brown (10 YR 5/8), soft, very
                                                  moist, wet in some zones, yellowish brown
        15                                        color appears to be FeO staining, scattered
                                                  fine grained subangular sand grains.
                                                  predominantly quartz with some red chert.
j
'i=i
'-'                                               15'-15.5'


~
        20
                                                 CL-CIayey silt: light brownish gray (2.5 Y 6/2),
r.f.)
                                                 illlD, slightly moist, abundant daIk yellowish
                                                 brown (10 YR 4/6) FeO staining, occasional
!       25
                                                 very ime to ime subangular sand grains,
                                                 predominantly chert.

!
        30




        35




        40




        45

             o   4     8      12   16   20
                 Resistivity (ohm-m)
                                             193-10
        0
                                             5'-5.5'

                                            CL-Clayey silt: light yellowish brown (10 YR 6/4),
        5                                   soft, vel}' moist to wet, slightly micaceous, common
                                            FeO staining. scattered vel}' fme camonaceous debris.

                                            10'-10.5'
       10                                   CL-Clayey silt: light yellowish brown (10 YR 6/4),
                                            fum, slightly moist, abundant brownish yellow
                                            (10 YR 6/8) limonite staining, common small
                                            zones of possible MnO mineralization, scattered
       IS                                   vel}' fme grains of sand, predominantly quartz
                                            with some chert grains as well.
j
ct=i                                        15'-15.5'
'-'



t
en
       20                                   CL-Clayey silt: light brownish gray (10 YR 6/2),
                                            vel}' fum, slightly moist, common brownish yellow
                                            (10 YR 618) FeO staining, occasional vel}' fme

!      25
                                            subangular chert grains.


g
       30




       35




       40



       45

            o   4     8      12   16   20
                Resistivity (ohm-m)         193-11
•              0
                                                   5'-5.5'

                                                   CL-Clayey silt: strong brown (7.5 YR 4/6),
               5                                   mottled with a grayish brown (10 YR 512),
                                                   silty clay, ftrm, slightly moist, appears re-woJked,
                                                   possible FILL
                                                   10'-10.5'
              10
                                                   CL-Clayey silt: brown (10 YR 513), finn, slighty
                                                   moist, common yellowish brown (10 YR 5/8)
                                                   FeO staining, mottled in some extent, scattered
              15                                   zones of very dark brown to black MoO
                                                   mineralization up to 2 mm across, occasional
    'C'                                            very fine grains of red cbert.
    J!
    .......                                        15'-15.5'


    ~
              20
                                                   CL-Clayey silt: mottled yellowish brown (10 YR 5/8)
    CI'l                                           and light brownish gray (10 YR 6/2), very ftrm to stiff,
                                                   slightly moist, scattered zones appear to have vertical
    J         25                                   fractures with very dark brown to black MoO fracture
                                                   fill, common fme to coarse grained cbert, occasional

    !                                              subangular chert gravels up to 1/8".


              30




              35




              40




              45

                   o   4     8      12   16   20
                       Resistivity (ohm-m)             193-12
                                                      5'-5.5'

                                                     CL-:Clayey silt: , light brownishgmy (10 YR 612),
                                                     soft, moist, abundimtbrowmsh yellow (10 YR 5/8)
                                                     FeO stain, ocCaSionalMnO mineralization,
                                                     possible FILL.
                                                     10'-10.5'

                                                       CL-Clayeysilt: light br'owmsh gray (10 YR 6/2),
                                                     , soft"moiSt.,abuDdant browish yellow (10 YR 518)
                                                       Fe0,stiUniDg"sc8ttered very fme to fme sand
                                                       grains, sand ,grains' are predominantly quartz with
              15                                       some,red obert, oooasicinal zones with MnO
                                                       mineraliZation.
     'Z'
                                                      15'-15.5' ,
      8
     e,;::j
     '-"
                                                      SM~Sandy silt: light brownish gray (10 YR 612),

     ~
              20
                                                     fmn, slightly moist, common yellowish brown
     til                                             '(10 YR 5/8) FeOstaining, sand is fme to medium
                                                     ,griUned, subangular to subround,predomlnantly
     ]        25
                                                     quartz with some obert, oooasional subrounded
                                                     obert gmvels to 1/8":

'e   -5
     g
              30




                   o   4'   '8'     12    16"   20
                       'Resistivity (ohm-mj ,
                                                       193-113
35



40



45

     o   4     8      12   16   20
         Resistivity (obm-m)
                                     193-14
       0
                                             5'-5.5'

                                             CL-Clayey silt: strong brown (7.5 YR 4/6),
                                             fum, slightly moist, vell' blocky structure,
       5                                     occasional light gmy to gray silty clay mottle
                                             (10 YR 7/1~/l), scattered areas of possible
                                             MnO mineralization, possible FILL.
                                             10'-10.5'
      10
                                             CL-Clayey silty: grayish brown (10 YR 5/2),
                                             soft, vCJY moist, abundant brownish yellow
                                             (10 YR 618) FeO staining, micaceous,
      15                                     occasional fme sand.
                                             15'-15.5'
'Z'

-
~                                            CL-Clayey silt: gray (10 YR 6/1), vCJY


i     20                                     finn, slightly moist, abundant yellowish
                                             brown (10 YR 518) FeO staining,
{/)                                          micaceous, occasional fine sand gmins,
                                             common specks ofbJack carbonaceous or
!     25                                     fermus material.


!
      30




      35




      40




      45

           o   4    8     12    16   20
               Resistivity (ohm-m)
                                          193-15
35



40



45

     o   4     8      12   16   20
         Resistivity (obm-m)
                                     193-16
       0
                                            5'-5.5'

                                            CL-Clay: light gray to light olive gray
                                            (10 YR 611) to (5 Y 611), soft to fum,
       5                                    damp, possible Fll..L, silty in part.
                                            10'-10.5'

                                            CL-8ilty clay: yellowish brown (10 YR 5/6),
       10
                                            soft, damp to wet, abundant Fe staining,
                                            trace organic material, trace quartz pebbles 1 mm.
                                            15'-15.5'
       15                                   CL-Sandy silt: brownish yellow (10 YR 618),
Z"                                          mottled with light gray (10 YR 611), clay,

-
c!                                          abundant Fe stainill8, damp, soft to finn,
                                            grading to sand in part. vel}' fine to fme grain,

~
       20                                   subround to round, modemtely sorted, clay
                                            matrix, slightly micaceous.
{I'l



!      25


!
       30




       35




       40




       45

            o   4     8      12   16   20
                Resistivity (ohm-m)


                                             193-17
       0
                                          5'-5.5'

                                          CL-Silty clay: light blOwn (7.5 YR 613), soft,
       5                                  mottled with light gray (10 YR 611), Fe
                                          staining, trace micaceous, trace c8Jbonaceous
                                          material, slightly damp.
                                           10'-10.5'
      10
                                          CL-Silty clay: light gray (10 YR 6/1) to
                                          blOwnish yellow (10 YR 6/6), finn, very
                                          slightly damp, Fe staining with occasional
                                          Fe nodules, slightly micaceous, homogeneous
      15                                  texture.
'Z'                                       15'-15.5'
 u
~
'-'                                       CL-Silty clay: dmk yellowish blOwn (10 YR 4/4),
 u
      20                                  abundant Fe staining, moist with some wet,
~
Vl
                                          predominately clayey, soft, moWed with light gray
                                          (10 YR 6/1).

!     25


!
      30




      35




      40




      4S

           o      20        40       60
               Resistivity (ohm-m)
                                                193-18
                               5'-5.5'

                               CL-Silty clay: dark yellowish brown (10 YR 4/4),
                               soft, abundant Fe staining, moist, trace
                               organic material.
                               10'-10.5'

                               CL-Clayey silt: light yellowish brown (10 YR 6/4),
                               finn, dJy, trace organic material, homogeneous texture.
                                15'-15.5'

                                CL-Clayey silt: gray to light gray (10 YR 611),
                                mottled with brown yellow (10 YR 6/4), f-'nn,
                                dJy, homogeneous texture, occasional Fe staining.




o      20          40     60
    Resistivity (ohm-m)
                               193-19
         0
                                             5'-5.5'

                                             CL-CJayey silt: yellowish brown (10 YR 516),
                                             soft becoming finn near bottom of sleeve, wet,
         5                                   abundant vel}' dark brown to blaok possible
                                             MnO mineralization and occasional nodules,
                                             occasional fine grains of ohert sand.
                                             10'-10.5'
        10
                                             CL-CJayey silt: brownish yellow (10 YR 612),
                                             stiff, slightly moist, oommon yellowish brown
                                             FeO staining, occasional fine grains of ohert.
        15
                                             15'-15.5'
j
-
C.-:i                                        8M-Sandy silt: light brownish gray (10 YR 612),
                                             stiff, slightly moist, common yellowish brown

~
        20
                                             FeO staining, sand is vel}' fme to fine grained,
                                             subangular, moderately sorted, predominantly
en                                           quartz with some ohert.

!       25


!
        30




        35




        40



        45

             o   4     8      12   16   20
                 Resistivity (obm-m)
                                                193-20
        o


         5



        10
                                 -

        15

j
I.j:j
'-"



~
        20

{Il



!       25

!
        30



        35



        40




             o   4     8      12   16   20
                 Resistivity (ohm-m)

                                             193-21
      0
                                          5'-5.5'

                                          CL-Silty clay: light gray (2.5 Y N 71) to light
                                          brownish gray (10 YR 612), mottled with
       5                                  yellowish brown (10 YR 5/6), moderately fum.
                                          slightly moist, Fe staining.
                                          10'-10.5'
      10
                                          CL-Clayey silt: color as above, increasing
                                          Fe staining, traces limonite, slightly moist,
                                          trace silt stringers.

      15                                  15'-15.5'

'Z'                                       CL-silty clay: yellowish brown (10 YR 5/4),

-
&                                         mottled with light gray (10 YR 6/1), very moist
                                          to wet, soft to slightly fum. increasing Fe staining,

~
      20
                                          decreasing silt, increasing clay, trace chert
                                          nodules 1 mm.
ron

!     25


!
      30




      35



      40




      45

           o   4    8     12    16   20
               Resistivity (ohm-m)




                                            194-1
o   4     8      12   16   20
    Resistivity (obm-m)




                                194-1a
        0
                                            5'-5.5'

                                            CL-Silty clay: light gray (10 YR 611), soft.
                                            vel}' slightly damp, trace of c8lb0naceous
        5                                   to organic material, abundant Fe staining.

                                        10'-10.5'

       10                               CL-Silty clay: light 8l1lY (10 YR 6/1). mottled
                                        with brownish yellow (10 YR 6/6), soft. trace
                                        quartz pebbles 1 - 2 mm, Fe staining with occassional
                                        Fe nodules, damp.
       15                               15'-15.5'
"Z'
u                                       Silty sand: strong brown (7.5 YR 5/6),
c2
'-"'                                    silt to clay matrix, fme to mediwn gmined,
                                        subround, poorly sorted, friable in part,

i
Vl
       20
                                        abundant Fe staining, abundant gmvel,
                                        quartz pebbles to gmvell - 2 em.

J      25

!
       30



       35



       40



       45

            o   4     8      12   16   20
                Resistivity (ohm-m)




                                              194-2
     0
                                        5'-5.5'

                                        CL-Silty clay: yellowish brown (10 YR 516),
                                        mottled with light gray (10 YR 6/1), occasional
     5                                  Fe staining, trace organic material, slightly damp, fmn.
                                        10'-10.5'

    10                                  CL-Clayey silt: light gray (10 YR 712),
                                        homogeneous, chy, %Fe staining, grading
                                        to vel}' fme grained sand in part.
                                        15'-15.5'
    15
                                        GC-Sandy gravel: light gmy (10 YR 6/1), sand,
~                                       vel}' fme gmined, subangular to subround,

-
&
0
    20
                                        modemtely to well sorted, clay matrix, friable in
                                        part, slightly damp, abundant pale pink (10 R 6/3)

~
                                        chert to quartz gmins 1 mm, ORAVEL: weak pink
                                        (10 R 514), hard, qwuzite, 1 - 2 em.
~



!   25

g
    30



    35



    40



    45

         o   4    8     12    16   20
             Resistivity (ohm-m)




                                          194-3
        0
                                            5'-5.5'

                                            CL-Clayey silt: yellowish brown (10 YR 5/8),
                                            mottled with light gray (10 YR 7/1), slightly
        5
                                            damp to cby, friable in part, Fe staining, trace
                                            limonite nodules.
                                            10'-10.5'
       10
                                            CL-Clayey silty: light gray (2.5 Y N 7/),
                                            mottled with olive brown (2.5 Y 413), silty,
                                            damp to slightly moist, trace Fe staining.
                                            occasional pebbles to 1 mm.
       IS
                                             15'-15.5

i'
ct:i
'-"'
                                            CL-Silty clay: yellow brown (10 YR 6/6) to
                                            brown (10 YR 513). mottled with light gray

~
       20                                   (10 YR 7/2). slightly damp, trace quartz
                                            pebbles 2 nun - 5 mm, occassional silty
Vl                                          stringers, abundant Fe staining. trace

!      25
                                            caIbonaceous material.



!
       30




       35




       40




       45

            o   4     8      12   16   20
                Resistivity (ohm-m)




                                             194-4
        0
                                           5'-5.5'

                                           CL-Silty clay: light gray (10 YR 6/1), soft-
                                           modemtly flDl, mottled with brownish yellow
        5
                                           (10 YR 6/6), Fe staining, abundant organic
                                           material, damp.

                                           10'-10.5'
       10
                                           CL-Clayey silt: light gray (10 YR 6/1)
                                           homogeneous, fum, slightly damp, Fe
                                           staining in part, friable in part.
       IS                                  lS'-lS.S'


---
eM'
'-
                                           Silty sand: strong brown (7.s YR 5/6),
                                           fine-medium gmined, subround to round, poorly


~
       20                                  sorted, moderately to poorly cemented, friable
                                           in part, damp to very moist, silty matrix,
CI'l                                       occasional quartz gravelS mm - 1 em.

!
oS
       25
                                           20'-20.5'


g                                          OC- Silty gravel: strong brown (7.5 YR 4/6)
                                           with red (2.5 YR 4/6) Fe staining throughout,
                                           slightly damp, chert to quartz gravel 1-2 em,
       30                                  light gray (10 YR 6/1) clay inclusions,
                                           occasional sand grains, subround, poorly sorted,
                                           poorly cemented, fme to medium gmined.

       35




       40



       45

            o   4    8     12    16   20
                Resistivity (ohm-m)




                                            194-5
      0                                      5'-5.5'

                                             CL-Clayey silt: olive brown (2.5 Y 413)
                                             mottled with light gray (2.5 Y N 21)
       5                                     C8Ibonaceous. soft, occasional stringers
                                             of silt.
                                             10'-10.5'

      10                                     CL-Silty clay: yellowish brown (10 YR 6/6).
                               -             soft, moist, predominantly homogeneous.
                                             trace organic material.

      IS                                     15'-15.5

                                             CL-Clayey silt: pinkish gray (1.5 YR 612).
-=-
&                                            mottled with yellowish brown (10 YR 6/6).
'-'                                          moist, sandy in part, trace pink to Fe stained

i
CIl
      20                                     (1.5 YR 7/4) chert to quartz grains. subrounded.



!     25


!
      30




      35




      40



      45

           o   4    8     12       16   20
               Resistivity (ohm-m)




                                               194-6
       0
                                           5'-5.5'

                                           CL-Silty Clay: light gmy (2.5 Y N7Y), mottled
                                           with olive brown (2.5 Y 4/3), soft, trace
       5                                   organic material, Fe staining trace micaceous.
                                           10.5'-11'

      10                                   CL-Clayey silt: olive gmy (5 Y 512) mottled
                                           with light gray (5 Y 611), soft, moist.
                                           occasional Fe staining, trace chert pebbles
                                           4 cm, trace limonite.

      15                                   15'-15.5

                                           CL-Sandy silt: pinkish gmy (7.5 YR 612)
---
eM
'-'
                                           homogeneous, slightly friable, trace pore
                                           openings, grading to vet}' (me sand in part,

~
      20
                                           slightly damp, limonite nodule in part,
                                           occasional chert pebbles 1-2 cm.
til


!
oS
      25

g
      30



      35



      40




      45

           o   4     8      12   16   20
               Resistivity (ohm-m)




                                            194-7
   D79




Blank Page
        EI




     AppeodixE

POTENTIOMETRIC MAPS
                                                                                  ]
                                                                                  J
                                                                                  l


                                                                                  t•
                                                                                  ::a




                                  1
                                  •
                                                                 I            ,
                                 PADUCAH GAS1:0UII DD1'USJOIC PUHr


                                  ____ _ _ _      'o\8I1UOmO&rtO Swfa"

                                       •          1I\1Id1 Will
                                                  ......
                                  ---
             110\81'11
                                      C-l33

        ,
        o       Z60
                 I
                         100
                          I
                                                  reD"
              Sal.                     •          110 DIaUM\ ".., DlrecU. .
Figure El. Groundwater Flow Direction Measured by the Colloidal Borescope Compared With the
           July 1993 Potentiometric Surface (Kearl, 1993).
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                                                                                                                                                                                                                                                                                                         .
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      - - - - -                               PGDP Perimeter Boundary
     • -   •• -         I I -                 DOE Property Boundary
                                              Paved Roads                                                                                                                                                                                                                                       i r
                                                                                                                                                                                                                                                                               . ' - " - " _ ' , _ _ .1       :



     .... ow·.···,·o ...·.·                   Gravel Roads                                                                                                                                                                                    ,          .-; ,,'                                ,"
                                                                                                                                                                                                                                                                                                .
     _._._.-                                   Streams                                                                                                                                                                                ,,' "                                                     \
                                                                                                                                                                                                                                                                                            ,..~,--.
                                                                                                                                                               -=-   I • _     1,1      L.. •• _            I                     "
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                                                                                                                                                                                                                                                                                   ,-
               •                                MonttorlngWel1 location
                                                                                                                                                                                                                      li
                                                                                                                                                                                                                      II: •
                                                                                                                                                                                                                                                                               /
      •                        iii Terrace Slope                                                                                                                                                                                                                                                    I
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                                                                                                                                                                                                                      ii
                                                                                                                                                                                                                       ~:
                                                                                                                                                                                                                              I                                                                ,I




                                                                                                                                                                                                 August, 1993


                                                                                                                                                                                             (Clausen et aI., 1994)

                                                              Feet

              o                    '.OCIO.                     20110~~~~~~
•                                          ." . ."._a_ . ,
                                                                                          I
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    . _ •. - .. -                          DOE Property ~undary                                                                                                                                                         .   :.

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                                                                                                                                                                                                                 iI~'Ii!~
                                                                                                                                                                                     .,.,..                      I.         ~
    .w"··,,·,,.. ,,_·~·w . Gravel ROads
    .-._._.-                               Stra8ril.•
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          • .                              Monitoring Wen location
                                           Terrace Slope
                                                                                                                                                                                          I
                                                                                                                                                                                              /
                                                                                                                                                                                                  /




                                                                                                                                                                                                             I


                                                                                                                                 September, 1993

                                                                                                                                   (Clausen et aI" 1994)




          i-·...
          o              1000
                                                        Feet
                                                        2000

                                                          ~-~~~i
                                                                     4DOO
.,
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             ...... -         •• co                DOE Property Boundary                                                                                                                                                                                    . I;
                                                                                                                                                                                                                                                            I
                                                                                                                                                                                                                                                              -  ~

                                                     Paved Roads                                                                                                                                                                              " ' __ '_"_'.'_1' {
             "·w,,·.··.,··.·,·,,.. ··                G.ravel Roads                                                                                                                                                              , ..-' .'
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                             Equipotential Lines (tt)                                                                                                                                     ."
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                                                                                                                                                                            -                    I
                        •                            r,.,onltoring Well Location                                                                                                                 I                                                /
             ~                                       Terrace Slope                                                                                                                                                                            /
                                                                                                                                                                                                                                          I




                                                                                                                                                                                                      October, 1993

                                                                                                                                                                                                     (Clausen et aI., 1994)



                                                                        feet
                      o                     '000                        2000                                        4000

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                                                                                                 .....

        - - - - -                                PGDP Perimeter Boundary
        . - .• - .. -                            DOE Property Boundary
                                                 Paved Roads .
    ·... "·,·.,· ..w.·_·,,.··~,                 .Gravel Roads
        _._._.-                                  Streams                                                                                                           I
                                                                                                                                                       - •• - .•.• £.. •• - ••
        --------.- .. Equlpotentl8i IJnes' (tt)
              .... .                                                                                                                                             ....
                    •                            Monitoring Well Location
                                                                                                                                                       .-' I
                                                                                                                                                                    I
                                                                                                                                                                                                      ,.
                                                                                                                                                                                                  /
        m                 iGE                    Terrace Slope                                                                                                                                /                    I
                                                                                                                                                                                          I
                                                                                                                                                                                                               ,
                                                                                                                                                                                                               I

                                                                                                                                                                                                           I

                                                                                                                                                                   November, 1993


                                                                                                                                                                 (ClaUSen et ai., 1994)

                                                         Feet
                  o                  1000                 2000                                         400CI

                   ~i~.__~"~~I
•                                                .".- . -.-
                                                                                                                                                    ••                                                                                 •
'-   j

                 ...... -.
                                \
                                                                                   "
                                I
                                I
                                     "           \
                                                     1
                                                                                   I
                                                                                   I                                         I
                                                                                                                         I
                                                                                                                     I
                                                                                                                I

                            I
                       I                                                  " 'l-. ,
                        \
                            I        I                                        \        , ....
                                V.
                                     \                                         ,
                                                                               \                ....
                                                                                                       -'-   .....
                                         \


                                                                                        ""



    ,
I
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                                                                                                                                                                                                                               "
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                                                                                                                                                                                                                          '\ ~
                                                                                                                                                                                                                   . ~ •• ..r
                                                                                                                                                                                                                     .      I
                                                                                                                                                                                                                     8
                                                                                                                                                                                                                                   I




                                                 I
                                             I                   "
             .• ·""·····",·_····..,1·""······"··_,,·····"·,·,,,,·""·1 .
                                I                                ,
                                                                 !

                                                                                                       ."
                                                                                                                 ,,                                                                                                   I
                                                                                                                                                                                                                      I
                                                                             .,,- .......
                                                                                          .-"
                                                                                   ~

                                                                                                                                 \                                                                    ir'06ii·il'·L, ,~.
                                                                                                                                     \                                                                ;1
                                                                                                                                         \                                                            i,i
 - - - - -                           PGDP Perimeter                       Boundary
                                                                                                                                                                                                       Ii
 • - • , - , • ...                   DOE Property Boundary                                                                                                                                             ..
                                                                                                                                                                                                       .    ~
                                                                                                                                                                                                            ~

                                     Paved Roads                                                                                                                             flIP·' _ •• _.            I;
                                                                                                                                                                                                  I _ ••
                                                                                                                                                                                              '-~.'         ~


    . w,·".·.·"~",,

_.-.-.-
                                     Gravel Roads
                                     Streams
                                                                                                                                                             .' .., ..' .'
--~-                            - -Equlpotentlal'Llnes (tt)-                                                                         .,.
                                                                                                               _ •• _ .•• J.. .• _ • ..                 ~'!" •
                                                                                                                     _.-- I
          •                          Monitoring Wen location                                                                                 t
"!1m ·Wi                             Terrace Slope                                                                                        I                              /
                                                                                                                                                                               /

                                                                                                                                         I




                                                                                                                                             December, 1993

                                                                                                                                             (Clausen et aI., 1994)


                                                     Feet
         o              1Il00                        2000                   4000

         ~i~~~~~i




                                                         ~~----------~~------------                                                                                                                             .................
..    :

                                                                                                                                                                                                  •
                                                    ,    .. .,.",...--- ..                ,

                                        ~~.".N""""""""""""''.''''\'''''......~~.................. . ,"   ."......... "
           ........·...v ..•·• .. ··,                                                          ~                          ....... ..

                                                                                                                                       ·•... v ................\ ......,
                                                                                                                                                                       ..~
                                                                                                                                                                           .:
                                                                                                                                                                            .:




 -.,
               "-      .   -            .

                                            \~                                    ---::--~_/--~
                                                        \::                                                          i
                         ' ".
                       .i,",
                                        .
                                                         .
                                                        1'.
                                                                                                                     I
                                                                                                                         .
                                                                                                                         I_:J.


                       K5  ./',i ~<:- 327
                            ~                                                                              ;',
                                                                                                                                              r?6



                              I i ' "
                                   v. \                                                                                           "
                                                \                                                           . l
                                                                                                                                          .....
                                                                                                                                                   '-
                                                                                                                          ,,
                                                 I
                                                I

                                                                                                                                           \
                                                                                                            ::   .                                 .....
                                            /
                                              i"'"
                                              . .
                ....        ",.
                                                                '\.           \

                                                                                    'S
                                                                                       ""

  1  II:




                                                         I
                                                     I

                                            I
                                                                                                                                                                                 ,,
                                                                                                                                                                                       \
                                                                                                                                                                                           ,                                                                          fr;·~···~l . l
     - - - - -                                      PGDP Perimeter Boundary                                                                                                      .-'-'.1                                                                              . ;:


     , - .. - .. -                                  DOE Property Boundary
                                                                                                                                                                                                                                                                      I;
                                                    Paved Roads                                                                                                                                                                                              iii
                                                                                                                                                                                                                                               .,_"_,,_,,,_.1:;
                                                                                                                                                                                                                                          .~                 I!
    •... ".-,.- Gravel Roads
  ,."~                                                                                                                                                                                                                           ... ,.                       .'
                                                                                                                                                                                                                            .~                                   \
  _._._._. Streams

                                                                                                                                                                                  _.-.,
                                                                                                                                                                                                                       ~.

                                                                                                                                                                                 _ •• _ .. .r.. •• _ ••         .~.,                                   ..... -..."\
                                                -Equipotential Lines (ft)
              •                                     Monitoring Weil location
                                                                                                                                                                                                          1                                    /
      II'm        3           @!'                   Terrace Slope
                                                                                                                                                                                                          II:
                                                                                                                                                                                                          J                               /                       I

                                                                                                                                                                                                          ~                           I                       I
                                                                                                                                                                                                                                                             I

                                                                                                                                                                                                                                                                                       JANMPOT

                                                                                                                                                                                                January, 1994

                                                                                                                                                                                               (Clausen et aI., 1994)
                                                                                                                                                                                                                                                                                                   tTl
                                                                                                                                                                                                                                                                                                 .. 00




           o
--                                                 .."
                                                         . .,... . - .          -, ,   ..

                    ".- ."                                                                                ,                                                                                               ;-''' ,...... ~.
                                                                                                                   ,.-."                                                \00.. .. _     .. _

                                                                                                                                                                                                                                -.-
                                                                                                                                                                                                                               '.
         I' "
                                                                                                                                                                                                          ::
                                                                                                                                                                                                  . -.;.... ::;: .
                                                                                                                                                                                                      t
                                                                                                                       ............
                                                                                                                                  ''',. ....                                                                                 .....
                                                                                                                                           ~.                                                                                     "\.
                                                                                                                                               "" . ...............;......... ....}
                                                                                                                                                                            ,

                                                                                                                                                                                                          ""\
                                                                                                                                                                                                                      ..~..
                                                                                                                                                                                                                               ,.


                                                                                                          324
                                                                                                             325

                                                                                                                  I
                                                                                                                   "
                                                                                                                  I                                                                                   I
                                                                                                                           326
                                                                                                                   I
                                                                                                                                                                                                  /
                                                                                                                       \
                                                                                                                                                                                             /
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                                                                                                                                                                                        I
                                               I
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                                   I
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                                                                                                                                          .....
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                                                                                                                                                               ""'.~
                                           \                                                                                                                                          ....       ,
                                               \

                                                                                                                                                ,

                                                                                                                                                        \
                                                                                                                                                                                                                                                  ~"
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                                                                                                                                                                                                                                                  ="
                                                                                                                                                                                                                                                  :0 "

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 I                                                                                                                                                                                                                                           •    8:
                                                                                                                                                                                                                                                         9

                                                                                            I
               .••...w·.••••w.""....•..........• ·.,•.   w,,"'·.··.· ....... ,........•,..•, ................\


         1
         II:




                                                          I




                                                                                                                                                                                                      \
                                                                                                                                                                                                                                                                                                ;~ '·;--····.L .. ~
                                                                                                                 .."                                                                                            \
                                                                                                                                                                                                                      ,                                                                         ;a
                                                                                                                                                                                                                                                                                                :;-



          - - - - -                                PGDP Perimeter: Boundary
                                                                                                                                                                                                                                                                                                l! ",;
                                                                                                                                                                                                                                                                                                 .
         • - •• - •• -                             DOE Property Boundary
                                                   Paved Roads                                                                                                                                                                                                         .. , .. -.. -.. -.. ..I!
                                                                                                                                                                                                                                                                                        J
                                                                                                                                                                                                                                                                                         ,~           ~

                                                   Gravel Roads
         w.·· ...~·~,·.·'·.·._hO_

         _._._.-                                   Streams
                                                                                                                                                                                                                                                             " "   "
                                                                                                                                                                                                                                                                   .


                                                                                                                                                                                                  _.
                                                                                                                                                                                                 _ •• _ • • 1.. •. _- t".                        ~   "   "                              ~
                                                                                                                                                                                                                                                                                            \
                                                                                                                                                                                                                                                                                                                      -"   -.~----   -".--_.

                                                   EqulpotiiatJal Linea(tt)                                                                                                                                                                                                                 J
                     •                             Monitoring Well Location
                                                                                                                                                                                                                                                                             /
         MUi!HIi!                 I!~              Teri'ace Slope                                                                                                                                                                                                        /




                                                                                                                                                                                                                                        February, 1994

                                                                                                                                                                                                                                        (Clausen et a1., 1994)


                                                               Feet
                   o                   , OlIO                   20lI0                                            4000

                    ~i~ __~~~I
                                               ,.,,~""""-"'-",
                                                                                                                                                                                                                                   •                                                                                                                                                                    •
                                                           .... ...............
                                                               ~                  ~

                                                                                      "",   ..,
                                                                                                  ••••• ....·.v•• ··,·




'-.
     I
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                           ·v.
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                                                                                                                         ;... ,.\;" •... ...
                                                                                                                         , ,
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                                                                                                                                                           ... ,............•....,......"'..... , ..;,..... ~..." ..." ...''' •." ..;~''''' •." .•... " .........                                                                 "'''''''::"e
                                                                                                                                                                                                                                                                                                                                                 ,   .......•. , ......
                                                                                                                                                                                                                                                                                                                                                                              .-. ........... , ... .


                                                                                                                                                                                                                                                                                         .......
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                                                                                                                                                                                                                                                                                                         , .'.
                                                                                                                                                                                                                                                                                                    .
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                                                                                                                                                                                                                                                                                                         . ".

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     1
     a:




                                               I
                                           I
          .•. ,.•..... ",."." .... ,/..""" ..•. ,,, .....
                               I
                                                                                                                                                                                      ,,
                                                                                                                                  .,.,..   .   -.   ...,
                                                                                                                                                                                                   ,
                                                                                                                                                                                                         \
                                                                                                                                                                                                                                                                                                              :   .
     - - - - -                     PGDP Perimeter Boundary                                                                                                                                                                                                                                                    ••
 • - •• - •• -                     DOE Property80undary
                          Paved Roads                                                                                                                                                                                                                                                                I            Ii
                                                                                                                                                                                                                                                                             ,~.-"-"-'.'-"                            ;:
 "" ... "",......"..,,,.. .Gravel Roads                                                                                                                                                                                                                                 .'
                                                                                                                                                                                                                                                                    "
 _._._.- Streams
                                                                                                                                                                                                                                                           .' " ". . . --
                                                                                                                                                                                    .- .-,
 -        ........---EqulpotentIaILlnes(ft),
                                                                                                                                                                                 ._ •• _ •.• L. •.• _.                                      ,.--~-=-.--
              •                    Monitoring Wen location
                                                                                                                                                                                                             I                             o.
                                                                                                                                                                                                                                          i"
                                                                                                                                                                                                                                          a: .•                                  /
                                                                                                                                                                                                                                                                                     /


                                                                                                                                                                                                                                          .s "
                                                                                                                                                                                                                                          .DB                                /

                                                                                                                                                                                                                                          !:                            I
                                                                                                                                                                                                                                                 I



                                                                                                                                                                                                                        March, 1994


                                                                                                                                                                                                                 (Clausen et aI., 1994)


          o              10lI0
                                                       feet
                                                       2000                                                              4IIQO
                                                                                                                                                                                                                                                                                                                                                                                                            -
                                                                                                                                                                                                                                                                                                                                                                                                            tr1
                                                                                                                                                                                                                                                                                                                                                                                                            o
          ~(~~~~~i
               PODP Perimeter Boundary
----           DOE . Properly Boundary
               Paved Roods
               Gravel Roads
               Streams
               EqulpotentlalUnes (ft)

    •          Wonltorfng Well LocaHon
               Terrace Slope




                                         April, 1994




               feet
o       1000   2000           4000

                                                       -
                                                       trl
        \




                 PGDP Perimeter Boundary
---'-            DOE Property Boundary
                 Paved Roads
                 Gravel Roads
                 Streams
                 Equipotential Une. (ft)

~
    •       ..
                 Monitoring Well Location
                 terrace Slope




                                            May, 1994




                 Feet
o       1000     2000           4000
•
r---~~-----'",,_




                                                                                                      ------~--328-___I__J




                    PGDP Perimeter Boundary
                    OOE PrOperty Boundary
                    Paved Roads
                   Gravel Roads
                    Streams
                    EquIpotentIal Unes. (ft)
        •           MonItoring Wen Location
    ~.             Terroce ·Slope




                                                               June, 1994
                              The measured water elevation, 341.04 ft for MW99, was omitted from the contou ....




                   reet
    o       1000   2000           4000
             PGDP Perimeter Boundary
             DOE Property Boundary
             Paved Roads .
             Gravel Roads
             Streams
             Equipotential Une. (ft)
   •         Monitoring Wen Location
i8.8',888g _. Terrace-Slope . -




                                       July, 1994




             F..t
01000       2000·           4000
               PODP Perimeter Boundary
               DOE Property Boundary
               Paved Roads
               Greavel Roads
               Streams
               Equipotential Una. (ft)

    •          htonltorfng Well Location
               Terrace Slope




                                           August, 1994




               Feet


- - -
o       1000   2000.
                          -
                               4000
               . PGOP Perimeter Boundary
                DOE PrOperty Boundary .
                Paved Roads
                Grave' Roads
                Streams
                Equipotential Unes . (tt)

    •           Wonltorlng Well location                       _._   - •••• r"   ~.-.-   ,.--' •• ,--   •••"   --'   ','   ~--.   " -• • - - . - " .   -   ••   -   -   .-




mm:s:e          Terrace Slope




                                            September,· 1994




                Feet
o       1000   2000            4000
  E17




Blank Page
           Fl




       AppendixF

MAPS AND CROSS-SECI'IONS
                                                                            F2


             Groundwo.ter Monitoring Pho.se IV 'A' Tro.nsect

       400~--------------~




       380
             M'J148                                 P4A2 P4A3
       370

       360

       350

       340
,...   330
V)
E
 d
'-"    320
 c
0
+>
 c:S
       310
 >                                                           -4

-
w
 Q.I
       300

       290                           -         A
                                          4


       280 L-:::::::--J-=
             ---:. -' -                   -',


       270    ~             -'.-"~


              -             ----
       260     "~.--:""
             '~ .....       _
                                          ,-',-
                                     -L............Ii-

                  .~            ..;-       ~    ... ~
       250   --~~~~~_~~                                      -       '-'~
                  "         "
                                                                 -    ~.




                      -.' .. ~ . ~ ... ~ -=- .-:.; .-'
              ~         .   .:....:....:-.:....,-.:..,           .....
       230                                               '
             u u p p e r Continento.l Recho.rge SysteM

             f/{--d              Reglono.l Gro.vel Aquifer

             E]                  Porters Creel-< Clo.y
             r=:-=l                                                              500   1000 Feet
             ~                   McNo.iry Flow SysteM                              I     I


              Loco. tlon of Cross-Sections co.n Ioe found froM Figure 4.
                                                       F3
                   Groundwo. ter Monitoring Pho.se IV 'B' Tro.nsect

          400 r---------~




          370 P4B3 P4B4 P4B5

          360

          350

          340

    "
    -'
    III
    E
    d
    ~


    c:
    2
    .p
    d
          310
                                4

e   >
    ~
    -I
    w     300

          290                   .        ~
                                    4
                           4
          280
                                           4
                   4
          270                           .4 .


          260




                   ---- - '
                       .             '.        .
                           .. ~     .~.,:~     ...
                                         -.-
          230 '.
                D              Upper Continento.l R!?c;:l-)o.rge   ~ysteM
                f/{·.d         ReglOno.l· Gro. vel Aquifer

                EJ             Porters Creek Cloy

                k· .j          McNoiry now SysteM                       .SO~   100,0 Feet

                   LOCo.tlon of Cross-Sections con Ioe found frOM Figure 4.
                                                                                                                                                                                                                                                                                                        F4


                                                                                Groundwo. ter Monitoring Pho.se IV 'C' Tro.nsect
      400

      390

      380
                                      P4C4
      370 P4C2                                                                        M'J193                       P4C5                                                  P4C7                                                        P4C9
                                                                                                                                                                                                                                                                M'J122
                                                                                                                                                                                                                                                                                         P4ClO
      360

      350

      340

-
"
III
E
      330
cs
~
      320
c
o            4·                                                                                                                                                                                                            4
~     310                                                                                      4'
cs                     4                                                                        4
                                                                                                                         .4 .                    4
>                                          '4

-
QI
W     300
                           :<1                                                                             4
                                                                                                               4                         4
                                                                                                                                                                   '4.
                                                                                                                                                                  44 .                 4i
                                                                                                                                                                                                4

                                                                                                                                                                                                     4
                                                                                                                                                                                                                                     4


                                      ..   4
                                                                                                                                                                                                               44
                                                                                                                                                                                                                               4~
      290                    44                                                                                                         <I
                                                                                                                                                                                                                                                                 4:3       4           4.
                                                                                                                                                                                                                                                                                      4·
                                                   4                   4   4                                                                                                         4                                                                                                 4
                  4                                                                                                                                                                                                            4
                                                                   4                           4i 4'           '4                                                                                                                                                          4
      2BO                                                                                              4                                     .4
                                                                                                                                '4                            4                             4            ftJ    4
                                      4                                                                                                                                                                                             4i        4'"    4      .
                                                                                     4'
      270                        .4
                                                       4
                                                                               ·4.
                                                        4                                     f--=":'~;:=--.--t-=-==.:......::;..-=:-.-.~.~~-:-=- -             - - - -
      260                                                                                                                                  .-'-.~ '~.' -... ~"~.:-.~ . =:=r~#.~~===:d
                                                                                                                     -. -. . .:;.---.~ .. .'~::-:'.- .. '-.'~'- -.-~......: .~: - .-"-
                                                                                                                        .--- -.             ,:. . . .:
                                                                                                                                                     -;,..-


                                                                                                                                                     -,...                      ~
                                                                                                                                                                                   - -
                                                                                                                                                         .-     ~.     -:-:.,       ',~, ~      .      -=-'    ~    '-   ~         ~.    .'   ~     .:- -:-- ...:.... -' ,'-:- .....; -:"'" . . . . .
      250
                                               -
                                                       "
                                                           0:--.   -:'-.-
                                                                          .-
                                                                           "
                                                                                      -
                                                                                          .     .
                                                                                              '-, -.-:'
                                                                                                                         . . .......-        ~       .:--     .~ ".~          .        ~'. -
                                                                                                                                                                                   .....
                                                                                                                                                                                      . r-..................
                                                                                                                                                                                      ..           ..
                                                                                                                                                                                                         , ' - ."T-"'-'"

                                                                                                                                                                                                             .
                                                                                                                                                                                                               --.~-.       -  -.    -
                                                                                                                                                                                                                                      -. .. - '
                                                                                                                                                                                                                                              ~.
                                                                                                                                                                                                                                                  -'

                                                                                                                                                                                                                                              .. - -~
                                                                                                                                                                                                                                                         --...         .
                                                                                                                                                                                                                                                                              ~-
                                                                                                                                                                                                                                                                           ~ '.-"~

                                                                                                                                                                                                                                                                           ~~~~-
                                                                                                                                                                                                                                                                                ---'.
                                                                                                                                                                                                                                                                                      '-     ~.




                  -'- ~ .......,.:. ...- - - -
                   .
                                           --~~~-~:~~~
                                           .
                                               -' .-:.. '-,'- .~ .'--: , '-. -
                                                                                               -'-'-
                                                                                                           -
                                                                               -: -.:.~ . ....:... ,- .~. - '- .-=-,'
                                                                                                                     .        _. -            ..
                                                                                                                                              -~.
                                                                                                                                                     ~.,.-,..      -     ..       :.:" :.. .!..~..;..~7~~. ~:~~ =~~~:~ ._~~~~_-;:~_~-.-:.
      230~----~---w~----------~--~----~~~~----~~~~------~----~~------~------~--~

            D         Upper Contlnento.l Recho.rge SysteM

            f/if:·d   Reglono.l Gro. vel Aquifer

            EJ        Porters Creek Clo.y

            6""" .,j McNo.iry              Flow SystE'1'l                                                           Loco. tion of Cross-Sections co.n be found froM Figure 4.
                                                                                                                                                                                                                                                          F5
                                                                          Groundwo. ter Monitoring Pho.se IV                                         In l    Tro.nsect




                                                                                                                                                               P4D8                                P4D9                 P4DI0 P4Dll
                                            P4n5                                     P4D6            MW144/MW145 P4D7




                                                                                                              4

                                                   4
                     4                                                                    4
                                             4                                                                               4
                                                                   4'                                                                                          .4
                         :<1                                                         4'
                                                                                                    4
                                                                                                                                               '4
                                                                    4'                                                  4
                                                                                                        4                                  44 .                          4
                                   ..
                                            4
                            44                                                   ·4
                                                                                                                    4
                                                 4             4
                 4                                                  4
                                                           4                              4'            ·4
                                                                                                4                           41
                                                                                                                   '4

270
                --:- -" '-;- *                                                                                                                        ~'.':"':'"   ,/'     ~      ~      ~'.-
260
      .
          . -:- .-- ..--
          -',
          . :-
                - - . .: . . .- - '
                  .~
                  . ..
                                   ~
                                   '.~
                                            .:....,. -: - '''-
                                                    . ~ ..~         - -
                                            -..:....:~ . ,. .:. .~ ~':
                                                                         ~.,-:--:~t:---=:.....:2:::::::t::,..:
                                                                               ..
                                                                                 -
                                                                            :=-- .. ..,..... ..-::-.,. -. - '
                                                                                                                                                                         . .--:..
                                                                                                                                                                         .   :
                                                                                                                                                                                  -'-
                                                                                                                                                                                 ~.:--:
                                                                                                                                                                                     '-:-
                                                                                                                                                                                              '-,'

                                                                                                                                                                                               .~ ~.
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                                                                                                                                                                                                               '::"-.'-     "-:-. ~.:":""             .
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      D              Upper Continento.l Recho.rge SysteM
                                                                                                                                                                                             500                      1000 Feet

      [):·d Reglono.l                       Gro. vel Aquifer
                                                                                                                                                                    E:=========IC=~======~I


      EJ             Porters Creek Clo.y

      h-:-' .j McNoiry                      Flow SysteM                                                      Loco. tlon of Cross-Sections cOon be found froM Figure 4,
                                                                                                                                                                                                                                                                                                                 F6

                                                                                             Groundwo. ter Monitoring Pho.se IV '[' Tro.nsect




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            D               Upper Contlnento.l Recho.rge SysteM
                                                                                                                                                                                                                                                    500                   1000 Feet

            ["}:·d Reglono.l                         Gro. vel Aquifer

            EJ             Porters Creek Clo.y

            l-,. ..j       McNo.iry Flow SysteM                                                                                                Loco. tlon of Cross .... Sectlons cOon be found frOM Figure 4.
                                                                                                                                                                                                                                                                                     F7

                                                                               Groundwo. ter Monitoring Pho.se IV 'F' Tro.nsect
          400~------------------------------------------------------------------------------~




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                D                Upper Contlnento.l Recho.rge SysteM
                                                                                                                                                                                                                            soo                    1000 Feet

                t/~f:'d Reglono.l                               Gro.vel Aquifer

                EJ              Porters Creek Clo.y

                l~ ..j McNo.lry

•
                                                              Flow SysteM                                                     Loco. tlon of Cross-Sections cOon be found froM Figure 4 .
                                                                                                                                                                                                                                                                                                                                                                                                                                                   F8
                                                                                                                Groundwo. tel'" Monitoring Pho.se IV 'G' Tro.nsect

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            D             Upper Contlnento.l Recho.rge SysteM

            r·~·~~·:·d Reglono.l                    Gro.vel Aquifer

            EJ        Porters Creek Clo.y

            li...,;. .,j McNo.iry                   Flow SysteM                                   Loco. tlon of Cross-Sections cOon be found froM Figure 4.
                                                                                                                                                                                                                                       F9
                                                                   GroundwOo ter Monitoring PhOose IV 'H' TrOonsect
     400r-~----~------------------------------~------------~----~




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             D              UpperContlnento.l RechOorge SysteM
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              f//:·.dReglonOol GrOo vel Aquifer
                                                                                                                                                                                                                              ..

             EJ            Porters Creek Clo.y
                                                                                                                                                                                                                               i


             ki~ ']MCNo.iry                      Flow SysteM                                                         LocOotlon of Cross-Sections cOon be found frOM Flgur~ 4.
                                                                                                                                                                                                                               I
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    Blank Page




•
                        LITHOLOGY
                                                                   o           GAMMA-API   100                 100   NEUTRON POROSITY 0
                                                                                                               ~
                                                                                                                                                                                              WL                               ANALYTICAL              HYDRO
                                                                                                                                                                                                                                                       UNIT
                                                                                                                                                                                                                   ,                                                    ~
                                                                                                                                                              I
                                                                                                                                                                  (
                                                                                                                                                              I
                                                                                                                                                                  \
         SILT (90%), wI traCe clay (10%) and occasional                                           ....I
                                                                                                  o
                                                                                                      I
                                                                                                                                                            .~

         sandy (poorly sorted, subrounded,very fine grained)
         brownish yellow (10YR 6/6), soft, oCcasional iron
         staining



                                                                                                                                                                                                                                                       :::t
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                                                                                                                                                                                                                                                       .....
         SILT (SO%) and CLAY (SO%); poorly sorted, and                                                 I                                                                                                                                               go
         trace sand (subrounded ttl roundeci, very fine
         grained, red (2.SYR 4/8) and subangular, very fine                                                                                                       )                                                                                    :::t
                                                                                                                                                                                                                                                       C
         grained, clear) light yellowish brown (10YR 6/1) wI                                                                                                                                                                                           I\.l
.a=
-0
         light gray (1 OYR 712), soft               '                                                  I                                                      I
CD
.,       CLAY (60%), silty (40%) and trace sand (as above), '
~        brownish yellow (10YR 6/6) wI light gray (10YR 7/1),                                                                                                     \
                                                                                                                                                                                                                                                                    c
:::l     soft
~~----------------------------------~~+-~-+~                                                                                                            .-,   /                                                                                                     ()
                                                                                                                                                                                                                                                                    ;;0
:::l     SAND (70%) very fine to fine grained, poorly sorted,                                                                                                                                                                                                       CIJ
[        subrounded to rounded, moderately cemented,
o
CD       some clay, very pale brown (10YR 7/4) w/ clear and                                                                                                   \
-0
o
III
         red (2.SYR 4/8)                                                                                                                                      I
~ ~----------------------------------~                                                                                                                                                                                       No Recovery
         GRAVEL (70%) 5 to 10 mm chert, little sand (20%,                                                                                                             1
         very fine to fine grained, poorly sorted, subrounded
         to rounded,      moderately cemented), trace clay,
                                                                                                                                                                                              ...
                                                                                                                                                                                              I\.l
         reddish brown (SYR 4/4)                                                                                                                                                              ~
                                                                                                                                                              ~
         CLAY (60%) sandy (very fine grained, poorly sorted,                                                                                                                                                                                             :::t
         subangular to angular), well cemented, abundant
         iron staining, reddish brown (5YR 4/4)
                                                                                                                                          ",       ""                        ... ...                                                                     C
                                                                                                                                                                                                                                                         (.0)

                                                                                                                                      1
                                                                                                                                      ,
                                                                                                                                                                             <0
                                                                                                                                                                             q      <0
                                                                                                                                                                                    4                                                                    ~          ,
         GRAVEL (80%) 3 to 10 mm, rounded to angular
         chert and quartz, little sand, trace dark accessory                                                                              \.
         minerals, yellowish red (5YR 4/6)
                                                                                                                                               ,......
                                                                                                                                               I
                                                                                                                                                              ,,-
                                                                                                                                                                      ,.,                                                    1110101-0685
                                                                                                                                                                                                                             Bailed
                                                                                                                                                                                                                                                       :::t
                                                                                                                                                                                                                                                       ...
                                                                                                                                                                                                                                                       c
         GRAVEL (80%) 3 to 30 mm chert and sandstone,                                                                                                                   T                            en
                                                                                                                                            ..-                                                                              1U ug/L TCE

                                                                                                                                          ,
                                                                                                                                                                      ,.;.L I-                       0
         little sand (very fine to fine grained, poorly sorted,                                                                           ~                                                          C}                      NA      "'Tc
         subrounded), trace fossils, abundant iron staining,
         dark reddish brown (SYR 3/3)
                                                                                                                                           ~                                                                                                             [,         ;;0
                                                                                                                                                                                                                                                                    G>
                                                                                                                                                                                                                             1110101-0686                ~          »
                                                                                                                                          \..                                                                                PU.mped
                                                                                                                                                                                                                             1UXJ uglL TCE


r
         GRAVEL (80%) 30 to 40 mm chert, little sand (very
         fine to fine grained, poorly sorted, subrounded),
         abundant iron staining, dark reddish brown (SYR
                                                                                                                                                   "     )
                                                                                                                                                                      T
                                                                                                                                                                        I'                                                   11 +/- 21 pC11L "'Tc

                                                                                                                                                                                                                            1110101-0687
                                                                                                                                                                                                                            Duplicate
~        3/3)                                                                                                                                                                                                  -..I
                                                                                                                                                                                                                            Pumped
()
                                                                                                                                                                                                               '"
                                                                                                                                                                                                               q            1 uglL TCE
o                                                                                                                                                                                                                           23 +1- 19 pCi/L "'Tc
a
s·
                                                                                                                                                                                                                                                       ::t:
                                                                                                                                                                                                                                                       C



                                                                                                                                                        ,
         GRAVEL (70%) 30 to 40 mm chert w/,3 to 20 mm
CD
         white (1 OYR ~/1) quartz, some sand (fine grained,
                                                                                                                                                                                                                                                       '"
~        poorly sorted, unconsolidated, clear), dark reddish                                                                                            ~
o
CD       brown (SYR 3/3)
-0
o
III
~
                                                                                                                                                    (                                                                        1110101-0692
                                                                                                                                                                                                                             Pumped
         SAND (80%) fine to medium grained, moderate to
         well sorted, subangular to subrounded, clear, little
                                                                                                                                                     J                r-r                                                    50.6 uglL TCE
                                                                                                                                                                                                                             23.3J uglL cis 1,2 DCE
         gravel, unconsolidated                                                                                                                    lJ                                                                        21 +1- 19 pCi/L "'Tc      ,                [,
                                                                                                                        ~                                                                                                                                               ~

"
o
::I.     CLAY micaceous (biotite) increasing to 10% by 100',
                                                                                                                       .<.,
CD
iii      dark gray, (7.SYR 412), soft to slightly firm,                                                                   ~
()       homogeneous
CD                                                                                                                                                                                 ----~--
                                                                                                                                                                                                              .-
CD
"                                                                                                  ....
         CLAY some sand (very fine grained, poorly sorted,                                         g
         subrounded to rounded quartz); abundant biotite,                                                                     .....
         gray (10YR S/1)                                                                                                              \
         CLAY (50%) and SAND (50%) very fine grained,
         poorly sorted, subrounded to rounded quartz"
                                                                                                                               l
         abundant biotite, gray (10YR 5/1)     .
                                                                                                                              (
                       very                                                                      ' .....
                                                                                                   ....                       ~,                   '.


         sorted, subrounded to occasionally'round~d,
         abundant iron staining, light yellowish broWn (1
         6/4)
                                                                                                   o
                                                                                                                                ,
                                                                                                                                )

                                                                                                                                   J                                                                                         ~110101-O693
         SAND (80%) very fine to fine grained, moderately                                                                     l.J                                     r-r                                                    Pumped
                                                                                                                                                                                                                             1U uglL TCE
         sorted, subrounded, little clay, ,abundant iron
         staining, yellow (10YR 7/6)       .                                                                                  r-.                                            ---   -     .-               .   --      ~.
                                                                                                                                                                                                                             26 +1-20 pCilL "Tc
                                                                                                                                                                                                                           --~-.-   ",   ._---_.   -            -




s::
o
         SAND (90%) very fine grained, moderate to well
         sorted, subrounded, trace silt and clay, trace black
         minerals, unconsolidated, very pale brown (10YR                                                   I
                                                                                                                                          ,                                                                                                                         s:::
                                                                                                                                                                                                                                                                    0
                                                                                                                                                                                                                                                                    z
                                                                                                                                                                                                                                                                    II>
Z        8/2) to clear    .                                                                                I
                                                                                                           I
                                                                                                                                                                                                                                                                    ~.
II>
~. ~----------------------~--~------.
                                                                                                                                           )
."       SAND (70%) very fine grained, moderate to well           r--"""'_';                                                                                                                                                                                        ".
                                                                                                                                                                                                                                                                    ~
§        sorted, subrounded, some silt and clay, trace black                                                                              IJ                                                                                                                        CIJ
                                                                                                                                                                                                                             1110101-0694                           ~
!a       minerals, unconsoJidated, white (10YR 812)                                                                                       ~
o·     ~------------~------~--~--~-------
                                                                                                                                                                                                                             Pumped                                 ii' "lJm
                                                                                                                                                                                                                                                                        Ci)iii'
                                                                                                                                                                                                                                                                    3 o~
:::l     GRAVEL (60%) hard, sandy (fine to very fine
         grained, moderate to well sorted, unconsolidated;
                                                                                                                                           ~                            I                                                    1Uug/L TCE
                                                                                                                                                                                                                             11 +1- 34 pCilL "'Tc                            "lJe:
         clear), abundant pyrite, ironstairiing, black (10YR                                                                                   )                                                                                                                             ()O
                                                                                                                                                                                                                                                                             o~
                                                                                                                                                                                                                                                                             0
                                                                                                                                          ~                                                                                                                                  a, (.0)
         CLAY silty, abundant pyrite and mica, dark gray
         (2.SY N4/), firm, homogeneous
                                                                                                   .... I
                                                                                                   tI
                                                                                                        I
                                                                                                           I
                                                                                                           !
                                                                                                           !
                                                                                                                              1\--                                                                                                                                           ,,-..I
                                                                                                                                                                                                                                                                             z·
                                                                                                                                                                                                                                                                                .....
                                                                                                                                                                                                                                                                             ",:t:
                                                                                                                                                                                                                                                                             -..I
                                                                                                                                                                                                                                                                             0
                                                                                                           i                                                                                                                                                                 U1
         SAND very fine to fine grained, m()der~te to poorly                                               i                                                                                                                                                                 i:»
                                                                                                           I
         sorted, subrounded, unconsolidated in part,
         abundant pyrite wI some pyrite cement, grayish
         brown (10YR S/2)
                                                                                                                                   "
                                                                                                                                  'J                                                                                                                                         m
                                                                                                                                                                                                                                                                             (.0)
                                                                                                                                                                                                                                                                             g:

                                                                                                                                  "
                                                                                                                                                                                                                                                                             -..I
                                                                                                                                                                                                                                                                             I\.l
         SAND (80%) very fine grained, moderate to well
         sorted, subrounded to subangular, little silt, grayish                                            ,                   t"'.
         brown (10YR 5/2)
                                                                                                           ,                                                                                                                                                                 [g
                                                                                                                                                                                                                                                                        ,~
         155       TOTAL DEPTH                                                                             :
                                                                                        .-~,   ,~'.'




              LITHOLOGY,
                                                          o           GAMMA-API                        100                   100 NEUTRON POROSITY 0
                                                                                                                            I...
                                                                                                                                                                                                          ,.              WL            ANALYTICAL                                 HYDRO
                                                                                                                                                                                                                                                                                   UNiT
                                                                                                                                                                                                                                                                                   .r-
CLAY (BO%) wI Iitt,le' silt (20%), yellowish brown
(10YR 5/4), nonplastic, cohesive                                                                                                                                                           '"
                                                                                                                                                                                            ~




                                                                                                                .....
                                                                                                                I:)
                                                                                                                                                                                       J

                                                                                                                                                                                                                                                                                   :I:
                                                                                                                                                                                                         ,
                                                                                                                                                                                                                                                                                   ~
                                                                                                                                                                                                                                                                                   Qo
                                                                                                                ~                                                                                                                                                                  :I:
                                                                                                                I:)                                                                                                                                                                C
                                                                                                                                                                                                                                                                                   I\l




                                                                                                                                                                                            '"
                                                                                                                                                                                             (
                                                                                                                                                                                                 "'\
                                                                                                                                                                                                 ;'
                                                                                                                                                                                        I,....                                                                                              c
                                                                                                                                                                                                                                                                                            (")

                                                                                                                                                                                            '~                                                                                              :tI
                                                                                                                                                                                                                                                                                            en
                                                                                                                                                                                                 r--.. ~                       ..
                                                                                                                                                                                             t~ I-"                                                                                ,
                                                                                                                                                                                        If


                                                                                                                                                                                                                                                                                   :I:
                                                                                                                                                                                                                                                                                   c
CLAY (60%) sandy (very fine. to medium grained,                                                                                                                                                                ~          :t                                                       (0)

moderately sorted, subrounded quartz wI 15%                                                                                                                                                                    Q)
                                                                                                                                                                                                                          ~ co ~

accessory minerals), yellow brown (10YR 5/6)                                                                                                                                                                   4            Ol
                                                                                                                                                                                                                               ~
                                                                                                                                                                                   /
                                                                                                                                                                                  l)
SAND (BO%) fine grained, well sorted, subangular to
                                                                                                                                                      :   ....... ~
subrounded quartz, few accessory minerals, loose,                                                                                                     S                                                             en
                                                                                                                                                                                                                    Q)
brownish yellow (1 OYR 6/B)                                                                                                                                                                                         i:Q                                                            :I:
                                                                                                                        1
                                                                                                                                                                                                                                                                                   C
                                                                                                                                                                                                                                                                                    ~




                                                                                                                                                                       \.                          • tT                               1110101-0711
                                                                                                                                                                                                                                                                                    "
                                                                                                                                                                        ~                              ~                              Pumped
                                                                                                                                                                                                                                                                                           ,.
                                                                                                                                                                                                                                                                                           :tI
                                                                                                                                                                                                                                                                                           G)
                                                                                                                                                                                                                                      5J ug/L TCE
                                                                                                                                                                            l                                                         1B.9J ug/l cis 1,2 DC
                                                                                                                                                                                                                                      16 +1- 19 pCilL "Tc
                                                                                                                                                                             ll
                                                                                                                                                                                                       rr                             1110101-0712
                                                                                                                                                                                                                                      Pumped
                                                                                                                                                                                   '\                                                 3.BJ ug/l. TCE
                                                                                                                                                                                                                                                                                   :I:
                                                                                                                                                                                                                                                                                   c
                                                                                                                                                                                                                                                                                   (II


                                                                                                                                                                      f.:'--:-
                                                                                                                                                                                       1                                              14 +/- 9 pCi/l "Tc



                                                                                                                                                                                   J

                                                                                                                                                                                       J
                                                                                                                                                                                  IJ
                                                                                                                                                          ",.. I-"'"
                                                                                                                                                                                                        I                                                                           ""
                                                                             ~~~~~~~~-t~~                       8
                                                                                                                                             -(
                                                                                                                                                  ~
                                                                                                                                                                                                                                       1110101-0713
                                                         ~-+~~~~"~~~~~~~~~                                                                                                                                                             Pumped
                                                                                                                                                                                                                                       2.9J ug/l TCE
                                                                         < "-"-:- -'-:- -'-:- -"                                                  1
                                                                                                                                                   .
                                                                                                                                                                                                                                       10 +/- 21 pCiIL "Tc
CLAY micaceous (muscovite changing to biotite),      1--I--4,--+--+_I~~~-;::::;:£.--:.:=-=..::=-=
very dark gray, (2,5Y 3/1), very firm,pICl~tic:,____                         ~:.:.~~:.:.~-:,.:.:.~                                            ,

                                                                                                                                                                                                               .-----
homogeneous                                                                      4:-:::,,;,~:-~~~::~~::~        8                      ---   -- -4        ..---        .-- .. . ---        ---- --- ---                        ----   _.   --~~--       --------   -----




                                                         ~-+~4~~~~~~tl~~~~~                                                                           1\
                                                                                                                                                      If
CLAY (60%) san,dy (verY fine grained, wel,l sortl!d,                                                                                                  1\
subangular to subrounded to rounded, clear quartz),
abundant muscovite, gray (10YR 5/1)             .
                                                                                                                                                      1I
                                                                                                                                             'S'
                                                                                                                                                  "'" r-...                                                                                                                                .'3:
                                                                                                                                                                                                                                                                                             n
                                                                                                                                                               I                                                                                                                             Z
                                                                                                                                                                                                                                                                                            Dl
                                                                                                                                                                                                                                                                                           ~
                                                                                                                                                                                                                                                                                            "T1

                                                                                                                                                                                                                                                                                            ~
                                                                                                                                                                                                       -,--.                           -- .                                                 en_
                                                                                                                                                                                                                                                                                           '<
                                                                                                                                                             I
                                                                                                                                                                                                                                                                                            ~
                                                                                                                                                             I.                                                                                    '.                                      3

SAND (95%) very fine to fine grained: rounded, clear      f---
quartz, trace muscovite, trace biotite, trace
potassium feldspar, yellow brown (10YR 5/6);lwo
lithified stringers (132' and 13S'), dark red brown
                                                                                                                                                                       I
(5YR 3/3) oxidizing to strong brown (7,5YR 51B)
                                                         I--
                                                                                                                                                                       \
                                grain~d,
                                                                                                                                                                                                                                                                                                  -Om
SAND (60%) very fine to fine          well sorted,
well rounded to rounded, clear quartz, silty, black
                                                        \1--
                                                         r--t---f~'P~~~~~~~~~
                                                                                                                                                                        \
                                                                                                                                                                                                                                                                                                  (j)ii"
                                                                                                                                                                                                                                                                                                  °ai
                                                                                                                                                                                                                                                                                                  " C'.
                                                                                                                                                                                                                                                                                                  (")0
(10YR 2/1), firm, homogeneous '                                              r
                                                                  J.:;,.-:;::,-::;,.-:;::,-::;,.-:;"-"::.:::~
                                                                                                                                   -
                                                                                                                                                                  j                                                                                                                               o~
                                                                                                                                                                                                                                                                                                  ~(o)
                                                                       t~~'~~~ii{it{gt{i~i ~
                                                         I--+-i-~-~",,<:=:-
                                                                      ...                                                                                  I                                            I                             1110101-0714
                                                                                                                                                                                                                                                                                                  .. -.I

                                                                                                                                                                                                                                                                                                  Zu.
                                                                                                                                                                                                                                                                                                         ...
                                                                      ';~~f~f:t§f:~~f~~~'                                                                  \                                                                          Pumpe~ .                                                     en"
SILT (60%) sandy (very fine to .fine grained, well \                                                                                                                  II'                                                             SU iJg/l, TCE                                                OJ
                                                                                                                                                                                                                                                                                                   co
sorted, well rounded to rounded,' clear quartz),                                                                                                                                                                                      13 +/- 18 pCIIL              -rc                            "00
interbedded lignite, low grade coaly organics, black                                                                                                                  ~                                                                                                                           'm
(10YR 2/1)                                                                                                                                                 ~                                                                                                                                       ~
                                                                                                                                                                                                                                                                                                   I\l
                                                                                                                                                                                                                                                                                                   I\l
                                                                                                                                                                                                                                                                                                   co
SAND (60%) fine grained, soft wi stringers
sandstone (very fine grained, subangular, "dirty,"
                                                    Of\                                                                                                                                                                                                                                            ;.,




                                                                                                                                                                                                                                                                                                  ~
silty, carbonaceous, calcareous cement), silty; black
(10YR 2/1)                                                                                                                                                                                                                                    ,.




                                                                                                                                                                                                                                                                                                  ~
155             TOTAL DEPTH                                                                                                                                                                                                                                                ,   "




                                                                                                                                                                                                                                                                                            ,II
                                                                                                                                                                                                                                                                                       ,
                                                                                                                                                                                                                                          ..      ,

                                                                                                GAMMA-API                                100            100   NEUTRON POROSITY 0
                             LITHOLOGY                                                                                                     ....         .#                                           WL                                   HYDRO
                                                                                                                                                                                                                                          .UNIT '
                                                                                                                                                                                                          .   :.




                                                                                                               .


         ..
              SILT (60%) little clay. little sand (20%) (very fine
              grained, well sorted, subrbunded quartz), yellowish
              brown (10YR5/6). cohesive, sand·'content increases
              wi depth                                                                                                                                                             J


              SIlT {50%) and SAND {50%) ""'" .,. to '''''      go''''''' \
              well sorted. subrounded. yellowish brown (ioVR 5/6).
              cohesive
                                                                                                           ~~;:~                                                                       C
                                                                                                                                                                                                                                          j:
                                                                                                                                                                                                                                          c


                                                                                                I'                                            .:
                                                                                                                                                                                                                                          .....
                                                                                          ~~~~~f~~~~
                                                                              \~-+~~~4~~~t~                                                             ~-+-+~-':~4-+~,~~
~             SAND (80%) very fine to fine grained, well sorted',                                                  ~~~=I.;:t'=.~-:''t'':'-i             I-+-+-+-~-I--+--'-I':"".-+--+--I
'M            subrounded to rounded quartz, little silt, light                                                           ~~~:~~:                                             .1            "-
(")           yellowish brown (10YR 6/4), slightly cohesive                                       -fr.'.                 ~11~~                ~"

i
~
          G -I'..-ve-L-6-to-18-m-m-,-w-e-II-r-ou-n-d-e-d-S-an-dSt-on-eW.-I--\
      I - -- R
              chert and quartz fragments. vellow (1 OVR 8/8)
                                                                     -
                                                    ~;.{:':' ~:;:;:~ ;,::
                                                                                              ~ ~~ ~f*{1.{~l~*~i~{F.; g 1-+--I-......j.~~+-+--+-+-,i~1'-I
                                                                                                                                                                                            (
                                                                                                                                                                                                                                                      c
                                                ~.~~P~~?~~~~~~~n~~~~~~~~~~~~~>'
.goO 1 - - - - - - - - - - - - - - - - - - , ~~H~
                                                                                                                                                                                                                                                      (")
                                                                                                                                                                                                                                                      :::0
UJ            SAND (80%) very fine to fine grained, well sorted,              \                                ,~<?o :I ~'i)q.~ ~!                                                          J                                                         en
l;'           subrounded to rounded quartz, little silt,' light                                            ~Q~:a
                                                                                                          ..
                                                                                  \1--+--+---1I--+--'<.l,T'tl               i;d.~~O~Al                  1-+-+..:..:···+--+--t-+-+--+oR-I ~
              yellowish brown (10YR 6/4), slightly cohesive                                                                                             1--l-+-+-+-lf-+-+-A..-1I--1~_
                                                                                                               .~ ~i~~i~Jl~~~~~~
                                                                                                           ~ ~~~<1~!,~o~!~:o~ ~ ~+--+--+--+--f-l-li:::111"'!'~)-+---1
                                                                                                           1
                                                                                                                                                    ....
              GRAVEL 6 to 25 mm. well rounded sandstone wi                                                                                ~o
              chert and quartz fragments. yellow (10YR 8/8)


                                                                                                                                                                                                                                          ,
                                                                                                                                                                                                                                          :I:
              SAND (70%) very fine grained. subangular. clear                                                                                                                                                                             c
                                                                                                                                                                                                                                          w
              quartz wI 10% accessory minerals. some silt.
              yellowish brown (10YR 5/8)
                                                                                                                                                                                                                                          :i:
                                                                                                                                                                                                                                          c
                                                                                                                                                                                                                                          ~



                                                                                                                                                                                                               1110101-0715
                                                                                                                                                                                                               Pumped .
                                                                                                                                                                                                               40.9 ug/L TCE
                                                                                                                                                                                                               4 +1- 8 pCiIL "Tc
                                                                                                                                                                                       )                       1110101-0716
              GRAVEL (60%) 6 to 25 mm. subangular to                                                                                                                                                           (Duplicate)
              subrounded chert wi occasional sandstone liths,                                                                                                                                                  Pumped
r-            sandy (very fine to coarse grained, subangular to.                                                                                                                                               60.8 ug/L TCE

~
(")
              subrounded quartz). yellowish red (5YR 4/6), gravel
              consistent size. fewer large gravels and more fine
                                                                                                                                                                                                               2 +1- 3 pCi/L "Tc

o             gravel and very fine grained sand                                                                                                                                                                    1110101-0717
a
::f
                                                                                                                                                                                                .,                 BaRed
CD                                                                                                                                                                                                                 183.9 ug/L TCE         :::t
io                                                                                                                                                                                                                 NA "Tc                 C
                                                                                                                                                                                                                                          (11

 CD
'C
o
UJ
ii

                                                                                                                                                                                                                   1110101-0718
                                                                                                                                                                                                                   Bailed
                                                                                                                                                                                                                   1.1J ug/L TCE
                                                                                                                                                                                                                   27.4J ug/L cis DCE
                                                                                                                                                                                           Ii    I                 NA "Tc
                                                                                                                                                                                                          .                                           ,
\l                                                                                                                                                                                                                 1110101-0719
o                                                                                                                                                                                                                  Pumped .
              CLAY common muscovite. very dark gray. (2.5Y
~                                                                                                                                                                                                                  180.1 uo/L TCE
iil           3/1). firm. very plastic. cohesive, homogeneous .
(")                                                                --   ...       'I~   1 - 1·--1·--       I·~                                     I~                                                              9 +1- 1ipCl/L "Tc
CD                                                                                                                                                  ~1--I~-+~-+--+-o\I-+-r-t
...
CD
                                                                                                                                                                                                                   1110101-0720
                                                                                                                                                                                                                   (Duplicat!!)
              CLAY (60%) sandy (very fine to. fine grained, well                                                                                                                   )
                                                                                                                                                                                                                   172.3 ug/l TCE
              sorted. subrounded to .rounded, clear qua.rtz).                                                                                                                                                      16 +/~ 17 pCill "Tc
              common biotite. dark gray brown (10YR 5/2)                                                                                                                      Ii
                                                                                                                                                                                   \


              SAND (60%) very fine to fine grained. well sorted.
              subrounded to rounded. clear quart~ wI occasional                                                                                                                                                1110101-'0721
                                                                                                                                                                                                               Pumped' .
              sandstone lithic fragments. clayey. dark gray brown
              (10YR 5/2)                                                                                                                                                                                       1.1Jug/L TCE
                                                                                                                                                                                                               7 +1- 43 pCi/L "Tc
                                                                                                                                                                                                              ,. 1110101-0722
                                                                                                                                                                                                                 (Duplicate)
                                                                                                                                                                                                                   Pum~ed
                                                                                                                                                                                   T                               1.1J ug/L TeE
                                                                                                                                                                                                                   14 +I-~ 1~ pCiIL "Tc
                                                                                                                                                                              I~                                        \


                                                                                                                                                                                                                        i      .
                                                                                                                                                                                                                   1110101-0723 '
                                                                                                                                                                                                                   Pump~
                                                                                                                                                                                                               5U tig/L TCE .
                                                                                                                                                                                                               . +1- 17 pCilL "Tc
                                                                                                                                                                                                               12
                                                                                                                                                                                                                            1


                                                                                                                                                                                                                   111010:1-0724
              CLAY (90%) trace sand (very fine grained, well                                                                                                                                                       (Duplicate) .
              sorted. subangular. clear qu~rtz). common'                                                                                                                                                           Pumped
              muscovite. very dark gray (10YR 3/1)                                                                                                                                                                 5U ug/~ 'TCE ,
                                                                                                                                                                                                                   11+1- 20 pCi/L "Tc
                                                                                                                                                                                                                                I
                                                                                                                                                                                                                                \
                                                                                                                                                                                                                                ,
                                                                                                                                                                                                                                1
                                                                                                                                                                                                                                ,
                                                                                                                                                                                                                                !
              150                 TOTAL DEPTH                                                                                                                                                                                   I
                                                                                                                                                                                                                                I
                                                                                                                                                                                                                                    I
                                                                                                                                                                                                                                    !
                                                                                                                                                                                                     \


                                                                 o     GAMMA-API        100   NEUTR9N POROSITY                                        0
                           LITHOLOGY

                                      sand                                                                                      t-,
                                                                                                                                                      ,                    WL
                                                                                                                                                                                                     !   '\
                                                                                                                                                                                                                                ANALYTICAL      HYDRO
                                                                                                                                                                                                                                                UNIT
                                                                                                                                                                                                                                                'f'
          grained, well: sorted, subangular quartz),
                                                                                                                                                                                                          I
          (10YR 4/1)
                                                                                                                                                                                                              ,


                                                                                                                            j

          SILT (50%) ~nd SAND (50%) very fina grained, well
          sorted, subrounded quartz, yell()Wish brown (1DYR                                                                                                ..                                                 i                                 ::I:
          5/6), cohesive, sand content increases wI depth                                                                                                                                                                                       c
                                                                                                                                                                                                                                                .....
                                                                                                                                                                                                                                                po
                                                                                                                                                                                                                  \                             ::I:
                                                                                                                                                     -                                                                                          c
                                                                                                                                 \                                                                                                              '"
         SAND (60%) very fine to medium grained,
         moderately sorted, subangular quartz and feldspars,                                                                        \                                                                             ,

         clayey, yellowish brown (10YR 5/6), cohesive                                                                                                                                                             I
                                                                                                                                                                                                                                                         C
                                                                                                                                                                                                                                                         0
C                                                                                                                                                                                                                                                        :;0
"0
"C       SAND (70%) very fine grained,subangular quartz                                                                          )                                                                                                                        en
~        and feldspar, some silt, yellowish brown (10YR 5/6),
o
o        slightly cohesive                                                                                              )
;:,

g ~----------------------------------~
                                                                                                                    II
(1)
:l
~
o
(1)
         SAND (90%) fine to coarse grained, subangular
         quartz, trace silt, yellowish brown (10YR 5/6)          OW5BE'w           ,0




~      r------------------------------------.                                                                               .~
!!l.     GRAVEL 6' to 12 mm, sandy (very tine to coarse
Ui
         grained), yellowish brown (1 DYR 5/6)                                                                          ~~                                             ~
                                                                                                                                                                       0
                                                                                                                                                                       0}

         SAND (70%) fine to coarse grained, subangular                                                                                                                                        "..
         quartz, some silt, brown (1DYR 5/3), slightly                                                                                                          "..                           en
                                                                                                                                                                UI                            0}
         cohesive                                                                                                                                               i:i!
                                                                                                                                          II                                        ....,
                                                                                                                                                                                    "..

         GRAVEL 3 to 12 mm, sandy, reddish yellow (7.SYR                                                                                                                            01
                                                                                                                                                                                    tI.!
         6/8)                                                                                                                   l/                                                                                    :
         CLAY (60%) sandy (fine grained, rounded to well                                                                                                                                                               \
         rounded quartz), light yellow brown (10YR 6/4)


         CLAY (60%) sandy (fine grained, rounded to well
                                                                                                                                                                                                                                                w
                                                                                                                                                                                                                                                ::I:
                                                                                                                                                                                                                                                C



                                                                                                                                                                                                                                                1,
                                                                                                                                                                                                                           '.



         rounded quartz), yellow brown (10YR 5/6)                                                                                                                                                                      .\

                                                                                                                                                                                                                                                         ;

         SAND (60%) fine grained, rounded, clear quartz,                                                            ~                                                                                                           i               ::I:
         silty, yellow brown (10YR 5/6)                                                                                                                                                                                         i               c
                                                                                                                                                                                                                                                ....
                                                                                                                                                     I                                                                          ,


                                                                                                                                1                                                                                     11~O101-0729
                                                                                                                                                                                                                                                    f'
         GRAVEL (70%) 6 to 18 mm, subangular to
                                                                                                                                                                                                                      Plimped
         subrounded chert wI some quartzite, some sand
                                                                                                                                                                                                                      24() ug/l TCE
         (very fine to coarse grained, subangular to
         subrounded quartz), yellowish red (SYR 4/6), gravel
                                                                                                                                 '\                                                                                   0.7J ug/l 1,1 DCE
         up to 36 mm common from 72' to 78'
                                                                                                                                                                                                                      4         +/-
                                                                                                                                                                                                                           9 pCiIL ""Tc
                                                                                                                                                                                                                                    1
                                                                                                                                                                                                                                    I
                                                                                                                                                                                                                      1110101-0730
r                                                                                                                                                                           ....,                                     PUmped
I ~----------------------------~----~
o
                                                                                                                                                                            ""1.                                      370 ugll., TCE
                                                                                                                                                                                                                      3.7J ug/l 1,1 DCE
                                                                                                                                                                                                                                                         :;0

                                                                                                                                                                                                                                                         ~
 o                  fine to medlum gralned,yellowish red (5YR                                                                                                                                                         20.4.i ugIL cis DeE
;;
~. t---''-=-!------------------------------'-----""~ t--;-"""D~~'"!.                                                                                 I                                                                .14           r/-
                                                                                                                                                                                                                             21 pCiIL"Tc        ::I:
                                                                                                                                                                                                                                                c
                                                                                                                                                                                                                                                tn
;:,
                                                                                                                                                                                                                      1110101-0731
~
                                                                                                .




o                             ) 6 to 36 mm, subangular to                                                                                                                                                             (Du'plieate)
(1)
                           chert wI some quartzite, occasional                                                                                                                                                        Pumped
"C
o
!II             "'n..
         lim'....       clasts, some sand (very fine to coarse                                                                            I)                                                                          438 .6 ug/l TeE   1




;-'                     subangular to subrounded quartz),                                                                                                                                                             2.6J ug/l 1,1 DCE
         ye'rh ... (SYR 4J6)                                                                                                                                                                                          27.8J ug/l cis DCE
                                                                                                                                                                                                                      10 ~/- 21 pCi/l ""Tc

                                                                                                                                               I                                                                                        i
                                                                                                                                                                                                           1110101-0732
                I                                                                                                                                  tT                                                      Pumped
                                                                                                                                                                                                           301.5 ug/l TCE
                                                                                                                                          J                                                                2.6J ug/l 1,1 DCE
                                                                                                                .   -t i""'"                       .--_.   ----- _._----                            -._._. 29,9~_~glJ.._~sQG~ .

                                                                                                                                                                                                                                                .
                                                                                                    -.      .                                                                               ....
         GRAVEL (60%) some sand, little silt, yellowish red                                                                                                                                                2.2J ug/l carbon tet
                                                                                                                     }                                                                                     5 +/- 6 DCiIL ""Tc
                                                                                                                                                                                                                                                .
         CLAY (90%), trace sand (very fine to fine grained,                                                         i
"
o
ii
         subrounded, clear quartz), abunda'nt biotite, dark
         grayish brown (2.SY 4/2), firm
iil
o                                                                                                                   II
~
                                                                                                                    ~

         CLAY (70%) some sand (very fine to fine grained,
         subrounded, clear quartz), abundant biotite, dark
         grayish brown (2.5Y 4/2), firm
                                                                                                                                 ......
                                                                                                                                          r-...                                                                  1110101-0733
         GRAVEL (60%) 10 to 20 mm, some sand (very fine                                                                 J~                         tT                                                            Pumped
         grained. moderate to poorly sorted, Bubrounded.                                                                                                                                                         2 ug/l TCE.
         clear to light gray [10YR 7/1) quartz), little clay,                                                           1                                                            '0                       .-
                                                                                                                                                                                                                      o
                                                                                                                                                                                                                   +1- 0 pCiIL ""Tc
         brownish yellow (1 OYR 6/8)                                                                                                                                                                                                                     i::
                                                                                                                                                                                                                                                         n
                                                                                                                                                                                                                                                          Z
                                                                                                                                                                                                                                                          GI
                                                                                                                                                                                                                                                         ~.

                                                                                                                                                                                                                                                          "T1
s::
o
         SAND (70%) very fine to fine grained, poorly sorted,
         subrounded to subangular, clear qua'rtz, some clay,                                                                                                                                                                                              ~
z                                                                                                                                                                                                                                                         en
II)
~.
         moderate to poorly cemented, unconsolidated .in                                                                                                                                                                                                 ~
         part, light gray (10YR 711)                                                                                                                                                                                                                      Ii"
"
o
3
                                                                                                                                                                                                                                                          3

2!.                                                                                                                                                                                                                                                              "m
c)"                                                                                                                                                                                                                                                              ~iD
::l      SAND very fine .grained, moderate to well .sorted,
                                                                                                                                                   tT
                                                                                                                                                                                                                      1110101-0734
                                                                                                                                                                                                                      Bailed                                     "a      0·
         subrounded

         depth
                        to    subangular,    clear    quartz,
         unconsolidated, white (10YR 812), increasing clay wi                                                           (                                                                                             1U ug/l TCE
                                                                                                                                                                                                                      NA' ""Tc                                   w
                                                                                                                                                                                                                                                                 0;:,
                                                                                                                                                                                                                                                                 0 ..
                                                                                                                                                                                                                                                                 0
                                                                                                                                                                                                                                                                 a.
                                                                                                                                                                                                                                                                 .. en
                                                                                                                                                                                                                                                                 w
                                                                                                                                                                                                                                                                 z·tn
                                                                                                                                                                                                                                                                 en co
                                                                                                                                                                                                                                                                 tn
                                                                                                                                                                                                                                                                 0
                                                                                                                                                                                                                                                                         011




         CLAY (90%) trace sand (very fine grained, cle~r                                                                                                                                                                                                         :..,
         quartz), trace mica, gray (10YR 511), soft,
         homogeneous, increasing mica and decreasing
         sand wI depth                               .                                                   1,.....000 V
                                                                                                                        ~                                                                                                                           -
                                                                                                                                                                                                                                                                 w
                                                                                                                                                                                                                                                                 m
                                                                                                                                                                                                                                                                 ~
                                                                                                                                                                                                                                                                 ....,
                                                                                                    ~


                                                                                                                                                                                                                                            ,                    '"
          150                   TOTAL DEPTH
                                                                                                                                                                                                                                                          to·
                                                                                                                                                                                                                                                          ~.,                  ..



                                                                                                                                                                                                                                                         ,.
                                                                                                                                                                                                                                                          i~t}
                                                                                                                                                                                                                                                             •
                                                                                                                                                                                                                                                         ......, , c_
                          LITHOLOGY·
                                                                         o              GAMMA-API                             100                  100   NEUTRON POROSITY .0
                                                                                                                                                                                          WL     ANALYTICAL          HYDRO
                                                                                                                                                                                                                     UNIT




                                                                                                                                                                              )

            SILT (80%) little clay increasing wI depth, occasional
            limonite staining, pale yelloW (2.SV 7/4) to yellowish
            brown (2.SV 6/4)                                                                                                                o 1-+-+-+-+-+-+--1~~+-+--I


                                                                                                                                                                                                                      ::t:
    ~:SJ~)(E~~~~~m;mec~Wde.;~~~~~-~4-~-4~~~~~~~~~~·~~~~:·~r;'}:~~ ~
                                                                                                                                                                                                                      ....
                                                                                                                                                                                                                      C
s
-0
    I   SAND (60%) very fine grained, moderate to poorly
        sorted, well rounded to subrounded, clayey,
                                                               I~,~:t.:~~ ;:;~~:{';"~
                                                                              ". ::::.:t.:
                                                                                                                                                  1-+_+-+-+_+_-+-I4+-+--I                                             00
                                                                                                                                                                                                                      :J:
!!l     occasional gravel to 3 mm, yellow (10YR 8/8) to        Id~~~g~;.;~;;;·:~~!                                                                                                                                    C
                                                                                                                                                                                                                      IV
OI_Jy~e~IIo~w~b~r~ow~n~(1~0~Y~R~5~~~)__________________-1--t-+--t-t~~~~~~~                                                                                                                                                       c
~~                                                                                      ~:~:-~~~:;·o~~~                                                                                                                          o
g
Ii         SAND (60%) medium _grained, poorly sorted,                                  (~:
                                                                                                       .
                                                                                                      .:-
                                                                       ~~=:~:~<:;:t~:..~:::~- ·-.~•.;r:: ·~1:~
                                                                                               0::: ......_ :~..;:;
                                                                                                                                                                                                                                 ;0
                                                                                                                                                                                                                                 C/)



o          moderately cemented, some clay, trace gravel (3 to                                                                               Co)

~          25 mm), yellow (10YR 8/8) to yellow brown (10YR             1--+-+--I--+-L5.=~,~p.:1:t=:.c:.~~:0
~          5/4)                                                                               c:~~::l'~~::'~ ~-i                        i         J--I-~-+-+-+--+-jr+--+--I
                                                                                                               :~j~~~~:~!
           GRAVEL (80%) 3 to 15 mm chert, little sand\
                                                                       1--+-+-+--+(.)"
                                                                                 "._~O
                                                                                ...
           (medium to fine grained, poorly sorted, subrounded), \I--+--+--f-........t
                                                                                      -.~:                                      ,0":        ~
           trace clay, iron staining, yellowish brown (10YR 5/8)                                                                                  '_+-_+_+-'__I_+-+-4i1-+_~
           to yellow (1 OYR 8/8)



      ~C~~~~YSI;I~~'~iro;n~S;~;i;ni:n:g,~y:e:IIOW::iS:h~b:r:own~~(1:0~Y:R~5:/8~)~'ll~~~~~Jl~~ilrllll~i F-+--F=4~F-~-F=4~F-4=9
      r    firm, homogeneous


      ~~~~~--~~~--~~~~r.~,.~~.~~~.~:-~.~:~~~ 0
       SAND fine to medium grained, poorly sorted,
           predominantly       subrounded      wI
                                                   ..l'- • ,~:!-:'.
                                                     occasional
                                                                    .•• :~T.0~._ mp*~~~~~~
                                                                       1-+--I--4=::;I:.::::?~:.:"      '::-i" • ."-••~~.::~
           subangular, silty, yellowish brown (10YR 5/8)                                 .... :•• ;~.~....ro~ ':~:!.:            0::
                                                                                   ,1>'lq. ~!~~~                ':!~~~~~ :!~~
           GRAVEL 10 to 25 mm, sandy (fine grained, clear
                                                                                              ~!.':~' :·o:~~':~~' O~!;'Q
           quartz), yellowish brown (10YR 5/8) to brownish
           yellow (10YR 6/6) to strong brown (7.SYR 5/8)
                                                                                  ~~~::~                       ;~~~~~\ .~~~-+--~~~~~
r
51
<
;
           GRAVEL 10 10 50 mm chert w/ conchoidal fractures.
           sandy, yellowish brown (10YR 5/8) to brownish
                                                                                        n.. ",. .A· n..
                                                                       r----t=i'~. 0 ~. Q ~ ~ •......o~~?
                                                                             ,-         .•..
                                                                           b...... oN".....
                                                                       f-<~- 'Q·O·Q          'Q. ~ci
                                                                                                        A       .U
                                                                                                                                 I,


g          yellow (10YR 6/6) to strong brown (7.5YR 5/8)               l---~iI_ • • • 1"10. ~~                       •••
                                                                                        ·0.
                                                                                                                               '1"10
c:                                                                                .<l."'.OO.<l ""
                                                                                      6
~                                                                      f-         'Ll         n      C.•1'... ~ • n.         MI' (      I~ H~-+-+-I-+-+-+-+I-I
Ii 1 - - - - - - - - - - - - - - - - - I - - . . I . - - 4:::-'A.~,~('j,"'::.':,.,~':.!.~~~~.:i ?~~~~ ~
                                                          .....
.~         GRAVEL (95%) 3 to 20 mm chert. trace sand (fine                   ~~ 1:f}';Q"ltG 0: PoO"",lC U.tfo'"
~          grained quartz). yellowish brown (10YR 5/8) to                 -~~1~J:~~O,,~!~~~
           brownish yellow (10YR 6/6) to strong brown (7.5YR                     ;o2:ttcr]co2:tLC!]¢o2
            5/8)                                                       ~rG.f:~f.~~f:~~~@~~~{?~~                                                                                                1110101-0737.
                                                                                                                                                                                               Balled'
                                                                                                                                                                                               70.8 ug/l TCE
           SAND (60%) coarse grained, subrounded to
           angular, gravelly (2 to 4 mm chert), iron staining,                                                                                                                                 NA '"Tc
           brownish yellow (10YR 6/6)

                                                                                                                                                                                               1110101-0738
                                                                                                                                                                       J                       (Duplicate)
                                                                                                                                                                                               Pumped
                                                                                                    -,.,; .
                                                                                                                                        18 J-+--+--I--+-+-+1\++-+-+-f
                                                                                                                                                            )
                                                                                                                                                                                               60.1 ug/l TCE
                                                                                                                                                                                               3 +1- 58 pCi/L '"Tc
           CLAY trace sand (quartz), occasional 2 mm gravel,                                                                                                           }
           very dark gray (10YR 3/1), firm, homogeneous
                                                                                                                                                                        )

                                                                       /--+----1----1-- .                                                   :::;:1=t==1=+=t=t=~:t=::t=::j::=1------I-- --+-------.------~-~-.-       -- -- --.
                                                                                                                            ~~=~8.-+--+-+~~-I-+~--+-+-~



                                                                                                              ::.::=    ~~~~
           CLAY (90%) trace gravel (2 to 4 mm, iron stained                                    1""-;:":'-=: .. _::=.-..::::...-..:!.:                                   ,
           chert), very dark gray (7.5YR N3/0) to gray (7.SVR                                  0:-::::-_-_"';.. __




          ~5~ro~),~S~Oft~t~Otfir~m~~~~::~::::~::~~Jt;[~~~ij~~~;~i:~~Ii.~~'~Ii~~iI~
      l
                                                                                                                                        .~~~~~~~~~~~~~                                                                       s:
                                                                                                                                                                                                                             o
           CLAY (60%) sandy (fine to very fine grained, p~orly                                                                                                                                                               Z
                                                                                                                                            -                               . ,                                              III
           sorted, subangular, clear quartz). trace gravel (2 to 4                                                                                                                                                           ~.
           mm), gray (7.5YR 5/0), soft                                                                                                            1--+--+--+--+--iI--+--3---+-+----I
                                                                                                                                                                                               1110101-0749                  "
                                                                                                                                                                                                                             ~
           GRAVEL (60%) sandy (medium to fine grained,                           ~c~. ~j~~:~ ~7~~~~~~~~~                                          I--+---+-+--+-I-+-~,--+-+..,...fl            Bailed

                  -~ ~{~i~1~~~;~~~~;t~11~ ~'-+--+-+--+-+-+--H+--+-I                                                                                                                                                          1
           poorly sorted, subrounded, well~cemented wI pyrite),                                                                                                                                5U ug/l TCE
           light gray (5YR 7/1) to reddish yellow (SVR !'6)                                                                                                                                    NA '"Tc
                                                                                                                                                                                                                             3


~z r--------:---w~~~1
_                    t:~.111 ~ ~ ~t{i~l§:X"{\i~~.!".~~: :~,
                     r.:~~
           SAND (90%) very fine to fine grained, mor;lerately
           sorted, subrounded, trace silt. white (10YR 812)
                                                             ,                                                                 :;,
                                                                                                                                                                                  4
~                                                                                                                              t::~.~             .I--+--I--!--I-+-+-++--I-I--I
~                                                                      -                                         ~~~~
O
~_·        SAND (95%) very fine to fine grained, .moderately
                                                                       .--+l~~:~~·;~~~~i~;~~:!jl:~~~:;:~~~~:;:~~~.:~
                                                                               .}~~~~~            l~::-:·:;~~::-:·:;:~~n                I~
                                                                                                                                        I0


           sorted, subrounded, trace gravel (3 to 10mm, iron
           stained), dark yellowish brown (10YR 4/4), hard to
           ~~.
                                                                              "':
                                                                              ~:l~:t~{:-~'~
                                                                              1                       ~m~ ~ ~!f(~
                                                                                                    ili~~il: ~·: i·:~:1~                          I-I-=~==:=~==:=~==:=~~::=~~~
                                                                                                                                                                      I           \
                                                                                                                                                                                               1110101-0750
           SAND (60%) very fine to fine grained, moderately       \I--+---<:~:~.;~.~-;~:~'
                                                                            ...                                        ~~. ~t~~~                                              I                Bailed
           sorted, subrounded, clayey, light gray (1 OYR 6/1) \                                                                                                                       I        5U ug/l TCE

           SAND (50%) fine to very fine grained, moderate t~ \
                                                                 ,,\                      ~~s~~z$1;~c__ ~~~~ ~ 1-+-+--+--1-_1_+--+1--1--1--1
                                                                                               ~~~~~ ~..
                                                                                                                                        I
                                                                                                                                                                                               NA '"Tc

           poorly sorted, subrounded and CLAY (50%), trace
           lignite, gray (SVR 7/1)

           CLAY (70%) some sond (fine to very fine grained, ""
           moderate to poorly sorted, subrounded), trace pyrite,
           gray (SVR 7/1).

            150               TOTAL DEPTH
               LlTHOlO~Y
                                                            o           GAMMA-API                                            100                 100 NEUTRON POROSITY       0
                                                                                                                                                                                                      .ANALYTICAL
                                                                                                                                                                                        WL                                   HYDRO
                                                                                                                                                                                                                             UNIT
                                                                                                                                                                                                                                          I



CLAY (80%) little silt, occaslo.nal limonite staining,
light gray (10YR 7/1). mottled wI brownish yellow
(10YR SIS), firm



                                                                                                                                                                                                                                 :r:
                                                                                                                                                                                                                                 c
                                                                                                                                                                                                                                 .....
                                                                                                                                                                                                                                 Qo
                                                                                                                                                                                                                                 :r:
                                                                                                                                                                                                                                 c
                                                                                                                                                                                                                                 ""
                                                                                                                                           ~

                                                                                                                                                                       I"
                                                                                                                                                                                                                                          c
                                                                                                                                                                                                                                          0
                                                                                                                                                                                                                                          :;0
                                                                                                                                                                                                                                          (J)
                                                                                                                                                                   I
                                                                                                                                           Cal
                                                                                                                                           0



                                                                                                                                                                                ~
                                                                                                                                                                   )            Cn..

CLAY (80%) little silt, yellowish red (SYR 5/S), firm,
homogeneous
CLAY (95%) trace sand,
                         .
                           strongbr~n     (7.5YR 5/S), ""I-+--+---lf-+--+--+"'~~··:-:'-::_:~;~t~~
                                                                                                       _ _~'::.=:~.:.
                                                                                                        ..
                                                                                                    4..:::~~0.::~~i:.:
                                                                                                                                           ~
                                                                                                                                                                   ,                                                             :r:
                                                                                                                                                                                                                                 c
                                                                                                                                                                                                                                 Cal


firm, very homogeneous                                    1-+-l-+---+--I-+-4~~~.:.=.::::~.:::-:::~~:::t:~.
SAND (80%) very fine grained, moderately sorted,\                         ~                         _.               •           .
subrounded, clear, little clay, yellow (10YR 7/S), soft \\I---i-~-+--+-l'-:                ...... ~::-~..:.-~-:~:.~~~':.:~:f:.::.¥..:~.:
                                                                                             -::;c;:;..-:--:". -:-. -:.:-.
                                                                                                                                                               t
SAND (90%) very fine grained,' well            sorted,,,,III""-III~'l.;~~~~~~.~~~~~t~:~~~~:~~~~~·~~%~:.~:                                                                                                                    .   , ,
subrounded, clear, little clay, yenow (10YR 7/6), soft                            ~~~:j::l~~-!:'l:~~-!:i'                                  g:                                                                                    I        I



SAND (60%) coarse to fine grained, moderate          to~\ .                ~&{tr~{t~ft~f&g                                                                                                                                       :r:
poorly sorted, predominantly subrounded. wI                         ,Q:o.;::·:::·;:::·:::~::·:::;;.::·::K:~~
                                                           I-+--+-i:-~                                                                                                                                                           c
occasional subangular, gravelly (3 to 6 mni, angular                                   ;:.°l.T-o·:::l.T-.o:::::O.T-o·-::P-o
                                                                            -:::;"·.T-••                                                                                                                                         •
chert), brownish yellow (10YR 6/6)                                           ...)~ •• 't~~:~  .• 't~~:~~
                                                                          .;;:-t:·i.J%~~•. !..Il~~ ·.~·it .                                                                                                                          lr
                                                                                                                                                                                                                                     r-
GRAVEL 20 to 30 mm, rounded, chert, sandy,                                                                                                                                                            1110101-075S
(coarse to medium grained, moderately sorted,                                                                                                                                                         Pumped
subrounded wI occasional rounded), yellowish                                                                                                                                                          2.4J uglL TCE
brown (10YR 5/8)                                                                                                                                                                                      13 +1- 21 pCilL '"Tc
                                                                                                                                                                                       01
                                                                                                                                                                                       (XI

                                                                                                                                                                                       t..!
                                                                                                                                                                                                                                          :;0
                                                                                                                                                                                                                                          G)
                                                                                                                                                                                                                                          )-

                                                                                                                                                                                              ooo.J
                                                                                                                                                                                              0)
                                                                                                                                                                                              W                                  :r:
                                                                                                                                                                                              ~       1110101-0757               c
                                                                                                                                                                                                      Pumped                     U'!
                                                                                                                                                                            I                         5.5 ug/L. TCE.
                                                                                                                                                                                                      53.2J 'uglL cis DCE
                                                                                                                                                                                                      0.3J ugIL carbon tet
                                                                                                                                                                                                      10 +1- 24 pCUL "'Tc




                                                                                                                                                                                                                                 ,
CLAY silty, trace sand, brownish yellow (10YR 6/6),                                                                                                                                                   1110101-0758
soft                                                                                                                                                                                                  Pumped
                                                                                                                                                                                                      2.7J uglL TCE
                                                                                                                                                                                                      16 +/~ 19 pCilL '"Tc
SAND (80%) increasing wI depth, very fin~ grained,
moderate to well sorted, little clay, white(1 OY~ 812)'




CLAY (60%) sandy (very fine grained, clear quartz).
trace mica, gray (10YR 6/1) to white (10YR 812), soft




                                                                                                                                                                                                                                              ~
                                                                                                                                                                                                                                              o
                                                                                                                                                                                                                                              Z
                                                                                                                                                                                                                                              III
                                                                                                                                                                                                                                          ~.



                                                                                                                                                                                                                                          "
                                                                                                                                                                                                                                          ~
CLAY (95%) trace sand, micaceous, dark gray                                                                                                                                                                                               (J)

(19YR 4/1), firm, homogeneous alternating wI CLAY
(60%) sandy (very fine grained, poorly sorted,                                                                                                                                                                                            1
                                                                                                                                                                                                                                          3
subangular, clear quartz), gray (10YR 6/1), soft




CLAY (60%) sandy (very fine grained, poorly sorted,
subangular,  clear quartz), . abundant black
carbonaceous material, micaceous, gray (10YR 5/1)




CLAY (60%) sandy (very ,fine grained, poorly !lorted, .
subangular, clear quartz)~ gray (1 QYR 6/1 ).soft




150        TOTAL DEPTH
                                                                                                                                                       ,

                                                                      o   GAMMA-API   100          100 NEUT~ON          POROSITY                  0
                             LITHOLOGY                                                                                                                           WL                        ANALYliCAL        HYDRO
                                                                                                                                                                                                             UNIT
                                                                                                                                   .......                                                                   I        I ~



              SAND (60%) very fine grained" subrounded, silty,
                                                                                                                                       1
              brownish yellow (10YR 6/6), slightly cohesive                                                                                1,
                                                                                                                                             )


                                                                                                                                       ~
              SAND (70%) very fine to fine grained, subrounded,
              some silt, brownish yellow (10YR 6/6)

                                                                                                                                  ~
                                                                                                                              ~


              SAND (50%) very fine to fine grained, subrounded to
              subangular quartz and SILT (50%), brownish yellow                                                                                                                                              :I:
              (10YR 6/6)                                                                                                           )                                                                         C
                                                                                                                                                                                                             ~


                                                                                                                                   )                                                                         I!O
                                                                                                                                                                                                             :I:

                                                                                                                                  "-                                                                         ...,
                                                                                                                                                                                                             C


 o
(1)                                                                                                                                                                                                                   C
"t:I                                                                                                                                                                                                                  (")
~. r----------------------------------------t~~+__t--~~                                                                                                                                                               :;0
                                                                                                                                                                                                                      en
en                                                                                                                                                                          ~
              GRAVEL (60%) to 12 mm, sandy (very fine to coarse                                                                                       ..                    c."
                                                                                                                                                                            tit
              grained, poorly sorted, subrounded), yellow brown                                                    '.                                                 W      .,
                                                                                                                                                                      co
              (10YR 5/4)                                                                                                                                              Q
                                                                                                                                                                      o:!
                                                                                                                                       )

             SAND (60%) very fine to medium grained, poorly
             sorted, subangular to subrounded, silty, yellow
             brown (10YR 5/4), cohesive
                                                                                                                                  1/
                                                                                                                         ~
                                                                                                                                  ~
                                                                                                                                  1                                                                              It
             CLAY sandy (very fine grained, 5ubangular Quartz),
             dark yellowish brown (10YR 4/6), slightly plastic,
             cohesive                                                                                                                   ~                                                                    :I:
                                                                                                                                                                                                             C
                                                                                                                                                                                                             W
                                                                                                                                       c~                  UI
                                                                                                                                                           co                                                           It
             SAND (60%) very fine grained, subangular quartz,                                                                     ~                        :."
                                                                                                                                                           o:!
                                                                                                                                                                                                                      '1\
             clayey, yellowish brown (10YR 5/6), slightly plastic,                                                                                                                                           :I:
                                                                                                                                                                                                             C
             cohesive
                                                                                                                                           ~                                                                 •
             GRAVEL (50%) up to 36 mm, angular to subrounded
             chert, limestone and sandstone, and SAND very fine
                                                                                                                                  1/                                              en
                                                                                                                                                                                  co
             grained subrounded quartz, reddish yellow (7.5YR                                                                 ,~                                                  en
                                                                                                                                                                                  ~    1110101-0266
                                                                                                                                                            '~
             6/6)
                                                                                                                                       1         T               -"
                                                                                                                                                                 ~
                                                                                                                                                                                       Pumped
                                                                                                                                                                                       5U mg/l TCE
                                                                                                                                                                                       14 +/- 24 pCi!L "Tc


              GRAVEL (50%) up 10 36 mm, subrounded to                                                                                                                                                                 :;0
              rounded chert,   limestone and sandstone, and
                                                                                                                                                                                                                      ~
              SAND very fine grained subrounded quartz, (7.5YR
              6/8)                                   ,                                                                                 ,
                                                                                                                                       t
                                                                                                                                                  I
                                                                                                                                                                                       1110101-0267
                                                                                                                                                                                       Pumped
                                                                                                                                                                                       5U mglL TCE
                                                                                                                                                                                                    .
                                                                                                                                                                                                             :I:
                                                                                                                                                                                                             c
                                                                                                                                                                                       o +1- 0 pCi/L "Tc     Ut




                                                                                                                                   ,,
                                                                                                                                       (
                                                                                                                                                                                       1110101-0268
                                                                                                                                  r,                                                   Pumped
             GRAVEL (60%) up to 18 mm, rounded chert wI
             occasional sandstone, sandy (very fine to coarse                                                                                    T                    I
                                                                                                                                                                                       26.2 mgIL TCE
                                                                                                                                                                                       o +1- 0 pCi/L "Tc
             grained, subangular to subrounded quartz), reddish                                                                                                       I


             yellow (7.5YR 6/6)


             GRAVEL (50%) up to 18 mm, rounded chert w/
             occasional sandstone and SAND (50%) very fine to
             coarse grained, subang.uLar to subrounded, reddish                                    ,- I---                                                                                                            .-_. . -.- .. -
             yellow (7.5YR 6/6)                                                             ....
                                                                                            8                                          7
             SILT (65%) sandy, some, iron staining, micaceous,
             light yellowish brown (10YR 6/4) to brown (10YR
             5/3), soft
                                                                                                                                  ~
              SILT clayey, micaceous, trace sand (very fine                                                                            )
              grained, subrounded), very dark gray (7.SVR 3/1),                             ....
                                                                                            ....
              soft, moderate to low plasticity                                              o
                                                                                                                                       J
                                                                                                                                                 h-                                     1110101-0269
                                                                                                                                                                                       'Pumped
              GRAVEL (80%) 3 to 6 mm, angular to subangular                                                                       1\                                                    7.7uglL TCE
              chert, little sand (very coarse grained chert w/ some                                                                                                                    o  +1- 0 pCilL "Tc
              quartz), yellowish brown (10YR 5/8)

                                                                                                             ..
                                                                                                              ~.
                                                                                                                         /                                                                                            l:
                                                                                                                                                                                                                      0
                                                                                                                                                                                                                      z
                                                                                                                                                                                                                      (I)
                                                                                                                                                                                                                      ~.




l:
             CLAY silty, scattered sand (very fine w/ occasional
             fine grained, subrounded), mica, very dark gray
                                                                                                                                                                                                                      "
                                                                                                                                                                                                                      ~
~            (10YR 3/1), firm, moist, high plasticity, sticky                                                            ~                                                                                            en

                                                                                                                                                                                                                      I
(I)
~      .                                                                                                                  4
.."
o
3
~
cr         1--------------------------------------.                                                                                                                                                                          -om
                                                                                                                                                                                                                             GliD
'"            SANDSTONE fine grained, wen sorted, sl,lbrounded,                                                                                                                                                              c<
              well cemented, wI pyrite, common pyrite nodules,                                                                                                                                                               -o~
                                                                                                                                                                                                                             (") o·
              carbonaceous laminations, lignitic wood fragments,                                                                                                                                                             g::!
              some replaced wI pyrite, dark 'gray (10YR4/1) ,
                                                                                                                                                                                                                             a~
                                                                                                                                                                                                                             Za,
                                                                                                                                                                                                                             ~w
              SAND (80%) fine grained, well ~orted, subrounded
              to rounded quartz wI som.e black accessory                                                                                                                                                                     ~
              minerals, scattered chert, oCcasional coarse. grained
              sand, little sill, dark gray (10YR 4/1)                                                                                                                                  1110101-0270
                                                                                                                                                                                                                             "
                                                                                                                                                                                                                             :?!
                                                                                                                                                                                                                             I\)
                                                                                                                                                                                       !lumped                               ClO

                                                                                                                                                 T                                     5U uglL TCE
                                                                                                                                                                                       NA"Tc,
                                                                                                                                                                                                                             !'>
                                                                                                                                                                                                                             Ut




                                                                                                                                                                                                                             ~
              151                 TOTAL DEPTH




                                                                                                                                                                                                                       If    ~
                                                                                                ,.','




                                                                                                                    10~
                                                                                                                                                                                                      I



                        LITHOLOGY
                                                                        o        GAMMA;. API
                                                                                                                          I       100 NEUTRON POROSITY                                                0
                                                                                                                                                                                                      ,                                WL                             ANALYTICAL,             HYDRO
                                                                                                                          I·                                                                                                                                                                  UNIT
. II'
                                                                                                                                                                                                                                                                                      ~   ,




                                                                                                                                                                             ~                                                                                                                    ~ I ~


                                                                                                                                                                             ~
                                                                                                                          I
         SAND (60%) very fine grained, subrounded, silty,
         trace clay, brownish yellow, (10YR 6/6), slightly
                                                                                                                                                                    IcC
         cohesive
                                                                                                                          1
                                                                                                                                                                             """\ ~
                                                                                                                          I                                                          \
                                                                                                                          1-"
                                                                                                                          ,0
                                                                                                                          !                                                              ~                !
                                                                                                                                                                                         {
                                                                                                                                                                                                          i
         SAND (60%) very fine to coarse grained, poorly
         sorted, gravelly (to 12 mm), very pale brown (10YR
                                                                                                                                  I--     -,                                               '"l/.  ~
                                                                                                                                                                                                                      b:!
                                                                                                                                                                                                                          -"
                                                                                                                                                                                                                          co                                                                  :r
                                                                                                                                                                                                                                                                                              c
                                                                                                                                                                                                                                                                                              .....
         7/4)
                                                                                                                                                                                         (
                                                                                                                                                                                         "I
                                                                                                                                                                                             rr                       I
                                                                                                                                                                                                                                                                  1110101-0240
                                                                                                                                                                                                                                                                  Bailed
                                                                                                                                                                                                                                                                  1U ug/L TCE
                                                                                                                                                                                                                                                                                              Qo
                                                                                                                                                                                                                                                                                              :r
                                                                                                                                                                                                                                                                                              c
                                                                                                                                                                                                                                                                                              I\,)
                                                                                                                                                                                                           I                                                      NA "'Tc

                                                                                                                                                                                     ~
                                                                                                                                                                                      <
                                                                                                                                                                                 <                                                                                                                    c
                                                                                                                                                                                                                                                                                                      C')
                                                                                                                                                                                                                                                                                                      ;;c
                                                                                                                                                                                     """ i'\                                               to)~
                                                                                                                                                                                                                                           ......
                                                                                                                                                                                                                                                                                                      en
                                                                                                                                                                                              ~                                            Co~
                                                                                                                                                                                                                                           ~
                                                                                                                                                                                          (



                                                                                                                                  -       1--'
                                                                                                                                                                                     ~
                                                                                                                                                                                          I~
                                                                                                                                                                                              "                 I
                                                                                                                                                                             f                                  I

                                                                                                                                                                                                                !
                                                                                                                                                                                                                                                                                                  V
         CLAY (60%) sandy (very fine grained, subrounded),                                                                                                                   I                                  .         '

                                                                                                                                                                                                                                                                                              :r
                                                                                                                                                                                                                 I
         yellowish brown (10YR 5/8), cohesive, plastic                                                                                                              ,/                                           'I
                                                                                                                                                                                                                                                                                              C
                                                                                                                                                                                                                                                                                              c.>
                                                                                                                                                                                                                 ,
                                                                                                                                                           ~

                                                                                                                                                                                                                      ,                                                                       II'     I~
                                                                                                                                                                    ,~
                                                                                                                                                                                                                      ,
                                                                                                                                                                                                                      \
         SAND very fine to fine grained, well sorted,                                                                                                                                                                                                                                         :r
         sub rounded to rounded quartz, brownish yellow                                                                                                                                                               i                                                                       c
         (10YR 6/6), lots of water, loose, flowing                                                                                                                               ~
                                                                                                                                                                                                                                                                                              "'"'
                                                                                                                                                                    ~
                                                                                                                                                                                                                      !
                                                                                                                                                                                                                          \
                                                                                                                                                                                                                          I co
                                                                                                                                                                                                                                  en
                                                                                                                                                                             \                                                    ~
                                                                                                                                                                                                                                                                                              ,If
                                                                                                                                                                                                                                                                                                  ~
                                                                                                                                                                             \                                                                                                                        ;;c
                                                                                                                                                                                 \                                            i                                                                       ~
                                                                                                                                                                             /                                                                                    1110101-0241
                                                                                                                                                                                 I                                                                                Pumped

                                                                                                                                                                                 ~                r                                                               77.4 ug/L TCE
                                                                                                                                                                                                                                                                  17 +1- 18 pCi/L ""Tc
                                                                                                                                                                    <:: io""'"
                                                                                                                                                                             [\
                                                                                                                                                                                 ,                                                                                1110101~0245
                                                                                                                                                                                                                                                                  Pu'mped
                                                                                                                                                                                                                                                                                              :r
                                                                                                                                                                                                                                                                                              c
                                                                                                                                                                                                                                                                                              en
                                                                                                                                                                                                                                                                  280 ug/L TCE :
                                                                                                                                                                                     I'           J
                                                                                                                                                                                                                                                                  1.2J ug/L 1,1 DCE
                                                                                                                                                                                                                                                                  16 +1- 21 pCi/L "'Tc
                                                                                                                                                                                     (                                                                            1110101-0246
                                                                                                                                                                                                                                                                  (Duplicate)
                                                                                                                                                                                         )                                                                        Pumped
                                                                                                                                                                                                                                   I                              269.2 ug/L TCE
                                                                                                                                                                                     ,~                                                                           1.2J ug/L 1,1 DCE
                                                                                                                                                                                                                                                                  o+1- 0 pCiIl "'Tc
         GRAVEL (60%) up to 30 mm, fragments of angular to
                                                                                                                                                                                         "'
         subangular chert, limestone and sandstone, some
                                                                                                                                                                                          ~
         sand (fine to coarse grained, poorly sorted,
         subrounded quartz), little clay, reddish yellow,(7.5YR
         7/8)
                                                                                                                                                        ~           --               ",."
                                                                                                                                                                                                  T
                                                                                                                                                                                                  I
                                                                                                                                                                                                                                       !
                                                                                                                                                                                                                                       ,
                                                                                                                                                                                                                                       I

                                                                                                                                                                                                                                                                  ·1110101-0247
                                                                                                                                                                                                                                       i
                                                                                                                                                                                                               __ .__._--- . --....                               t='UITIP_~~   ," __
                                                                                                                                                   <                                                      ..           I

                                                                                                                                                                                                                                           i
                                                                                                                                                                                                                                                          -~.--



                                                                                                                                                                                                                                                                  280 ug/L TCE
                                                                                                                                                        ~,                                                                                                        1.2J, ug/L 1,1 DCE
                                                                                                                                                                                                                                           I
                                                                                                                                                                                                                                                                  o +1-13 pCiIL "'Tc

                                                                                                                                                   C;
                                                                                                                                                        l>                                                                                 I
                                                                                                                                                                                                                                           I
                                                                                                                                                                                                                                           I
                                                                                                                                                        .........                                                                          1




                                                                                                                                                                     \
         SAND very fine grained, well sorted, subroundedto
         rounded quartz, some silt, brownish yellow (10YR
         6/8), slightly cohesive


                                                                                                                                                                         ~
         SAND (60%) very fine grained, subangular to
         subrounded, with lithic sandstone fragments, some
         pyrite, very dark gray (10YR 311)
                                                                              .~~:;5~:~h1~;~~l%1l~~;~~1~W;:                -"
                                                                                                                                                                    ~
                                                                                                                                                                     ~
                                                                                                                                                                             ~


                                                                       1-_1-+_I-+--1I-~---'~~b·;:~".t.~~~~~f:f I~
                                                                                                                                      -                                                                                                                                                       -


                                                                                                                                                          ". ~
                                                                  /'
                                                                                                                                                        ~
 s::
 n
 Z
         SAND (50%) very fine grained, subangular to
         subrounded quartz, and SILT, very micaceous,
                                                                                             ~!~!t!                                                <.
 QI
~.       occasional glauconite, very dark gray (10YR 3/1),
                                                                                       ~~~~{~~~~1~~*-~~~~                 I'
                                                                                                                                                    <,                                                                                                                                                3::
                                                                                                                                                                                                                                                                                                      ,0
         cohesive                                                                                                                                        )
 "
 o                                                                                              - . - ....- - . -   --.   I..,A
                                                                                                                                                                                                                                                                                                      Z
                                                                                                                                                                                                                                                                                                      QI
 3                                                                                        ~~~;~~;~~~;. i~                                                                                                                                                                                             ~.




                                                                                                                                                  -
                                                                                                                                                   \""",
 !!l.
 o·
 =>                                                                                                                                              , ,..,.                                                                                                                                              "
                                                                                                                                                                                                                                                                                                      ~
                                                                                                                                                                                                                                                                                                       en ~~
                                                                                                                                                                                                                                                                                                      '<
         SAND (70%) very fine to fine grained, moderate                                                                                                                                                                                                                                                         cQ'i
         sorting, very little mica, very dark gray (10YR 3/1)
                                                                                                                                                                                                                                                                                                      Ii-       "'tic:.
                                                                                                                                                                                                                                                                                                      3         ~~
                                                                                                                                                                                                                                                                                                                0
                                                                                                                                                                                                                                                                                                                ~~
                                                                                                                                                                                                                                                                                                                 ...,
                                                                                                                                                                                                                                                                                                                z·
                                                                                                                                                                                                                                                                                                                ...,~
         SANDSTONE very fine grained, well sorted,
                                                                                                                                                                                                                                               I
                                                                                                                                                                                                                                                                                                                g
                                                                                                                                                                                                                                                                                                                to)
         sUbrounded to rounded, common cubic pyrite                                                                                                                                                                                            ,                                                                U.
         crystals, biotite, silt, some carbonaceous material,                                                                                                                                                                                  I
         dark gray (10YR 4/1)
                                                                                                                                                                                                                                                                                                                m
                                                                                                                                                                                                                                                                                                                co
                                                                                                                                                                                                                                                                                                                .....
                                                                                                                                                                                                                                                                                                                ...,
                                                                                                                                                                                                                                                                                                                :.,.




                                                                                                                                                                                                                                                                                                                ~
         150                TOTAL DEPTH




L~'V~   ____________      ~   ____________________                ~~~~~           __   ~~~~         __     ~~~
                                                                                                                          I
                                                                                                                          I                                                                                                                         \                            --
                                                                                                                                                                                                                                                                                                                ~.             ':,.'


                                                                                                                                                                                                                                                    I                                                  .    ".,-'      ,   '




                                                                                                                                                                                                                                               _.
                                                                                                                                                                                                                                                    \l.
                                                                                                               --                                                                                                   ,
                                                                                                                                                                                                                    I

                            LITHOLOGY
                                                                      o   GAMMA-API         100                 100.          NEUTRON POROSITY 0                                                                    I
                                                                                                                ...
                                                                                                                ~
                                                                                                                                                                                                              ,     \
                                                                                                                                                                                                                        ,
                                                                                                                                                                                                                                                 wL                                        ANALYTICAl..               HYDRO
                                                                                                                                                                                                                                                                                                                      UNIT
                                                                                                                                                                                                                        !
                                                                                                                                                                                           ....                         !
                                                                                                                                                                                                                                                                                       ,
                                                                                                                                                                                                                                                                                                                      --, -,
                                                                                                                                                                                            ~


           SILT (80%), trace clay, trace gravel (1 to 2 mm,                                                                                                                        V
           rounded to subrounded), dark yellow brown (10YR
           4/4 to 4/6)                                                                                                                                                 j                                                                                                                                          "


                                                                                                                                                                       '\.
           SILT (60%) clayey, some scattered gravel,
                                             0                                                      '0
                                                                                                        ....
           increasing sand (very fine grained) wI depth, dark
           yellow brown (1 OYR 4/4 t9 4/6)         0




                                                                                                                                                                                                                            :
                                                                                                                                                                                                                            ,
           GRAYEL 1 to 4 mm wI occasional 10 to 20 mm                                                                                                                                                                       I
           angular, dark yellow brown (10y'R 4i4 to 4/6) ,
                                                                                                                                                                                                                            i


 ~~C~LA~Y~S;i1:~:.,y~e;IIOW~~br~OW;;n~(1~0;Y~R;5;~~)~~~~::~1=~=t==~~lIiillll!l1l1i
                                                                                                                                                                                                                            I
                                                                                                                                                                                                                            !

~I
                                                                                                                                                                                                                            \
                                                                                                                                                                                                                            ,




~
               sil~
          CLAY (60%)         at top becoming sandy (very fine
          grained) wI depth, brownish yellow (10YR 6/6)                                                                                                                            II
                                                                                                                                                                                                                            i
                                                                                                                                                                                                                            1
                                                                                                                                                                                                                                I
                                                                                                                                                                                                                                I
                                                                                                                                                                                                                                                                                                                      :J:
                                                                                                                                                                                                                                                                                                                      ....
                                                                                                                                                                                                                                                                                                                      C
                                                                                                                                                                                                                                                                                                                      Qo
o                                                                                                                                                                                                                               i~                                                                                    :J:'
o
::J
                                                                                                                                                                                   I\.                                          :en
                                                                                                                                                                                                                                1•                                                                                    ...,
                                                                                                                                                                                                                                                                                                                      C
~.
                                                                                                                                                                                                                                                                          0,



    GRAVEL (80%) 1 to 2 mm wI occasional 10 mm,
    angular limestone, chert, and sandstone, little silt,
                                                                                                                                                                                                                                I
                                                                                                                                                                                                                                i'w         ...,                                                                              c
                                                                                                                                                                                                                                                                                                                              0
::J
                                                                                                                                                                                                                                I ~                                                                                           :xl
[brownish            OYR                                                                                                                                                                                                        I                                                                                             C/l
      r-----~~~~~~------------/                                                                                                                                                                                                 I                               w
li?                                                                                                                                                                                                                                 I                           ~
                                                                                                                                                                                                                                                                w
"
o
~         SILT clayey, brownish yellow (10YR6/6)                                                                                                                                                                                    i
                                                                                                                                                                                                                                    :
                                                                                                                                                                                                                                                                ~
                                                                                                                                                                                                                                    ,
                                                                                                                                                                                                                                    i
                                                                                                                                                                                                                                                     ....
                                                                                                                                                                                                                                                     ",.

                                                                                                                                                                                                     --                                              en
                                                                                                                                                                                                                                                     <.I!
          SAND (90%) fine to coarse grained,trace silt, light
          yellow brown (10YR 5/6). fining upward sequence
                                                                                                                                                                                   Ii                                                                                          ",.
                                                                                                                                                                                                                                                                               m

                                                                                                                                                                                                 ~
                                                                                                                                                                                                                                                                           ~
                                                                                                                                                                                                                                                                                      1110101·0654
          GRAVEL (60%) 1 to 4 mm wI occasional 10 to 30
          mm, subangular, sandy, light yellow brown (10YR                                                                                                                                   < h-                                                                                      Pumped
                                                                                                                                                                                                                                                                                      5U ugIL TCE
          S/6)                                                                                                                                                                                1                                                                                       2 +1- 9 pCilL "'Tc
                                                                                                                                                                                             I)                                         ,
                                                                                                                                                                                                                                        ,
          SAND (60%) very fine grained, little silt, little clay,
          yellow brown (10YR 5/6)
                                                                                                                                                                               "

                                                                                                                                                                                           J                                                                                                                           "
          SILT (60%) sandy (very fine grained), pale yellow
          (2.5Y 8/4)
                                                                                                                                                                               ,
                                                                                                                                                                               ~

                                                                                                                                                                                                          T
                                                                                                                                                                                                                                                                                                                      :J:
                                                                                                                                                                                                                                                                                                                      c
                                                                                                                                                                                                                                                                                                                      w
                                                                                                                                                                                                                                                                                                                              \
                                                                                                                                                                                                                                        \
                                                                                                                                                                                                                                                                                      11101()1·0655                    r-
                                                                                                                                                                                                                                        i
                                                                                                                                                                                                                                        ,
                                                                                                                                                                                                                                                                                      Pumped
                                                                                                                                                                                            1                                                                                         2.3J uglL TCE
                                                                                                                                                                                                                                                                                      4 +/. 29 pCilL "'Tc

          GRAVEL (70%) 2 to S mm wI scattered 10 to 30
          mm, angular, some sand (very coarse grained), very
                                                                                                                                                                                        i                                                                                              1110101-0656
          pale brown (10YR 8/3)                                                                                                                                                    ~                      h-
,                                                                                                                                                                                           )
                                                                                                                                                                                                                                                                                       Pumped
                                                                                                                                                                                                                                                                                       42 uglL TCE
I
o
o
::J
e.
::J
                                                                                                                                                                                           (
                                                                                                                                                                                             ,                                                                                        .6 +1· 31 pCilL "'Tc


(1)
::J                                                                                                                                                                                                                                                                                                                   :i:    :xl
~                                                                                                                                                                 .~
                                                                                                                                                                                                                                                                                                                             ~
                                                                                                                                                                                                                                                                                                                      C
                                                                                                                                                                                                                                                                                                                      til
~                                                                                                                                                             (
"
g         GRAVEL (80%) 30 to 50 mm. little sand becoming
ij'       sandier wI depth, abundant iron oxides, yellow                                                                                                          ~
          brown (10YR 5/6)
                                                                                                                                                                      ~
                                                                                                                                                                                   11                                                        i


                                                                                                                                                                                   1,                                                                                                 1110101-0657
                                                                                                                                                                                                                                                                                      Pumped
          GRAVEL dark gray brown (10YR 412)                                                                                                                                                          ~                                                           . e.g,               429 uglL TCE

          GRAVEL brownish yellow (10YR 6/6)
                                                                                                                                                                                                     I    h-
                                                                                                                                                                                                                                                 i                  ~-
                                                                                                                                                                                                                                                                                      16 +1- 20 pCi/L "'Tc
                                                                                                                                                                                       ~

                                                                                                                                                                                                                                                                                      1110101·0658
                                                                                                                                                                                                                                                                                                                                  "
                                                                                                                                                                                                                                                                                                                                  ~



          CLAY (90%) trace silt becoming sandier wI depth,                                                          ---   .   ,     ,-    "_ ..   .....   -
                                                                                                                                                                  t       --           . __ ..
                                                                                                                                                                                                          ---     --_ ... _-                                _...                 -,
                                                                                                                                                                                                                                                                                      (pupliCe!te)
                                                                                                                                                                                                                                                                                      !=I!fl!'~E!~_.   ,_ _....
          very dark gray (2.SYR N3I1), dense, firm,                                                                                                                                                                                                                                   462 ug/L TCE
          homogeneous                                                                                                                                                                                                                                                                 14 +/~ 19 pCilL "'Tc

                                                                                                                                                              ~
                                                                                                                                                           I
                                                                                                                                                          r-,
          SAND very fine grained, dark gray (2.SY N/4)                                                  ....
                                                                                                        ....
                                                                                                        o
                                                                                                                                                                                                                                                                                      1110101·0659
                                                                                                                                                                \                                                                                                                     Pump~d
           SAND   sil~,   dark gray (2.5Y N/4)                                                                                                                        ~                                       I                                                                       5U ug/L TCE
                                                                                                                                                                                                                                                                                      19 +1- 19 pCiIL "'Tc
                                                                                                                                                                      Ie..
                                                                                                        ....
          SAND (90%) very fine to fine grained, becoming
          coarser at depth, lithified at 117',trace silt, dark gray
          (2.5Y N/4)
                                                                                                    ,

                                                                                                        ~                         ._---                                "
                                                                                                                                                                      ''\                                                                                                                                                     3:
                                                                                                                                                                                                                                                                                                                              0
                                                                                                                                                                                                                                                                                                                              z
                                                                                                                                                                                                                                                                                                                                         --


                                                                                                                                                                                   I                                                                                                                                         ~
                                                                                                                                                                                                                                                                                                                              III

                                                                                                                                                                      ,/                                                                                                                                                      "T1
~ r-----------------~~~--------_t_1_J_J~~~~~~~~                                                                                                                                                                                                                                                                               6'
~          SAND (85%) very fine grained. micaceous, dark                                                                                                      ~                                                                                                                                                               ~
                                                                                                                                                                                                                                                                                                                             Off
~.         gray (10YR 4/1)
o
"T1   ~   ______   ~   __________________________                ~
                                                                                                                                                                      )                                                                                                                                                       1/1
                                                                                                                                                                                                                                                                                                                              iii
                                                                                                                                                                                                                                                                                                                              3
~          CLAY sandy (very fine grained, subangular, clear to                                                                                    II"
                                                                                                                                                  I~
QI_~t~ra;n~s~lu~c:en~t~qu~a:rtz~),==m~ica:;,ceo~u~s~da~r:k;g~r:ay~(;10~Y~R~~=J==i=][=i==t;~~~~lIi
                                                                                                                                                                                                                    ,



- ~ 4/1), damp, stiff                                                                                                                                                                                                                                                                                                                   "tim
                                                                                                                                                   ,}                                                                                                                                                                               '~ii"
                                                                                                                                                                                                                                                                                                                                    o   <
           SAND medium grained, slightly Iithified wI pyrite,                                                                                                                                                                                                                                                                           "'tJ~
           dark gray (10YR 4/1), grades to sandy clay wI
                                                                                                                                                  I.J                                                                                                                                                                                   0 0
                                                                                                                                                                                                                                                                                                                                        8~
           depth                   .

           CLAY (85%), little sand (very           fine   grained,
                                                                                                                                                    ,
                                                                                                                                                  1,\                                                                                                                                                                                   aw
                                                                                                                                                                                                                                                                                                                                        . . 0)

                                                                                                                                                                                                                                                                                                                                        z:.."
                                                                                                                                                                                                                                                                                                                                                 CJ)

                                                                                                                                                                                                                                                                                                                                        ...,m
           subangular). dark gray (10YR 4/1)                                                                                                                                                                                                                                                                                            0
                                                                                                                                                                                                                                                                                                                                        ,8
                                                                                                                                                                                                                                                                                      1110101·0660                                      Iv
           SAND very fine grained, hard, abundant pyrite and                                                                                                                                                                                                                                                                            in
           pyritized sand, dark gray (10YR 4/1) wI some light                                                                                                                                             h-                                              i
                                                                                                                                                                                                                                                                                      Pumped -
                                                                                                                                                                                                                                                                                      1U. uglL TCE
                                                                                                                                                                                                                                                                                                                                        ....
                                                                                                                                                                                                                                                                                                                                        w
           yellow brown sand throughout                                                                                                                                                                                                                                                                                                 til
                                                                                                                                                                                                                                                            '.                        17 +1- 20 "'Tc                                    ......
                                                                                                                                                                                                                                                                                                                                        Co
                                                                                                                                                                                                                                                            i


                                                                                                                                                                                                                                                                                                                                        ~
                                                                                                                                                                                                                                                            I
                                                                                                                                                                                                                                                            ,
           150                  TOTAL DEPTH


                                                                                                                                                                                                                                                      :

                                                                                                                                                                                                                                                                    .'                                                            .Q
                                                                                                              .' ~:."   ':


                                                                                                                                                                                                                                                                                                       .   '



                           LITHOLOGY
                                                                      o            GAMMA-API                                          100                 100             NEUTRON POROSiTY
                                                                                                                                                                            ,                                                                   0
                                                                                                                                                                                                                                                                                                                             HYDRO
                                                                      ~
                                                                                                                                                                                                                                                                     WL                                        ANALV'nCAL


            CLAY ~ilty, trace gravel (1 to 2 mm, rounded to
                                                                                                                                           ,.      .'
                                                                                                                                                                                                                           ,......                                                                                           UNIT

                                                                                                                                                                                                                                                                                                                                 ~        ;~



            subrounded), organic debris, grayish brOWn (10YR                                                                                                                                                                V
            512) to brown (10YR 5/3)                         /                                                                                                                                                              I
                                                                                                                                                                                                                       (
            CLAY (80%) little silt, brown yellow (10YR 6/S)
                                                                                                                                                   ....
                                                                                                                                                   o



            CLAY (85%) little silt, yellow brown (10YR S/4)                                                                                                                                                                     )

            GRAVEL 1 to 3 mm , angular to subangular"
            limestone and sandstone, yellow brown (10YR S/4)
                                                                 4~
                                                             I-+--+--+~~ ~
                                                                                                                                                                                                                            "   'II,
                                                                                                                                                                                                                                       ~

                                                                                                                                                                                                                                    •P                                                                                       :I:
                                                                                                                                                                                                                                                                                                                             C
                                                                                                                                                                                                                                ~                                                                                            .....
                                                                                                                                                                                                                                                                                                                             go
                                                                                                                                                                                                                                                                                                                             :I:
                                                                                                                                                                                                                                                                                                                             C
           SILT (80%) little sand (very fine grained), trace                                                                                                                                                           <                                                                                                     N

           gravel, yellow (2.SY 7/6 to 6/S)       .                                                                                                                                                                         1"-
                                                                                                                                                                                                                                I                       I
                                                                                                                                                                                                                                                        !        w
                                                                                                                                                                                                                                                                 ....,                                                                   c

                                                                                                                                                                                                                                                    ~\
                                                                                                                                                                                                                                                                                                                                         0
                                                                                                                                                                                                                                                                 W                                                                       ::u
                                                                                                                                                                                                                                                                 ~                                                                       (f)


i          GRAVEL (80%) 2 to 4 mm, subangular limestone                          I-+--+--+-_oi!!                                                                                                                                \                   ~
                                                                                                                                                                                                                                                        I
~ 1_~a~n~d~s~an~d~s~ro~n:e,~Ii~tt~le~S~i1t~,y~e~lI~ow~~:.S~Y~7~/~6~ro~6~ffi~)~---t ~t-~-f~~~~~~~                                                                                                                                \                       i

                                                                                       ~~~~~
                                                                      __                                                                                                                                                                                :
ir
CD         SAND (80%) very fine grained, subangular, clear                                    ~.                        ~t'-i
                                                                                                                                                                                                                   l/
                                                                                                                                                                                                                                                         :
~          quartz, little silt, yellow (2.5Y7/6)                                                     :::.r.-;~;:
                                                                                                                                                                                                              ~                                                                                ....,
~~____________________________-t-+-+-+~I~~i:~~~a~A~~~~~i~~:~,~~;~                                                                                                                                                                                                                              """
                                                                                                                                                                                                                                                                                               W
1
;;;        SAND (75%) very fine grained, angular to
                                                                     1--1--f~&~2,J~~~:,:;.;t.~;Z~::~i~~~:::;';~~:::~
                                                                                          ,::,im ~~~~:E,~~:r.1~f!:f,1:~!                                                                                    J
                                                                                                                                                                                                                                                                                               '!


           subrounded, clear to milky quartz. little silt. trace
           gravel. yellow (2.5Y 7/S)                                                                                                                                                                    ~                                                                                                                    :I:
                                                                                                                                                                                                                                                                                                                             c
                                                                                                                                                                                                    i!                                                                              .:"1
                                                                                                                                                                                                                                                                                        (J'I                                 w



           GRAVEL (90%) 1 mm to 30 mm, angular, trace silt, ",I---+--+-~
                                                                                                                                                                                                            ,
                                                                                                                                                                                                            -.-.
                                                                                                                                                                                                                                            IT
                                                                                                                                                                                                                                                                                        w
                                                                                                                                                                                                                                                                                        ~
                                                                                                                                                                                                                                                                                                       1110101-0637
                                                                                                                                                                                                                                                                                                       Pumped
                                                                                                                                                                                                                                                                                                                                         ,

           yellow (10YR 7/S)
                                                                                                                                                   '0)
                                                                                                                                                   0
                                                                                                                                                                                                             J                              i-Lf-                                                      SU ug/L TCE
                                                                                                                                                                                                    I,                                                       ,
                                                                                                                                                                                                                                                                                                       o +/- 0 pCiIL ""Tc
                                                                                                                                                                                                                                                             I

                                                                                                                                                                                                        "'
                                                                                                                                                                                                        7"                                                                                             1110101-0638
                                                                                                                                                                                                                                                                                                                             :I:
                                                                                                                                                                                                                                                                                                                             c
                                                                                                                                                                                                        ~                                   h-                                                         Pumped                """
                                                                                                                                                                                                                                                J                                                      5U ug/L TCE
                                                                                                                                                                                         ~                                                                                                             o+1- 0 pCIIL ""Tc
                                                                                                                                                                                          .......
                                                                                                                                                                                                    1\
                                                                                                                                                                                                        J
            brown (10YR 6/4)                                                                                                                                                                  (                                                                                                                                          ::u
                                                                                                                                                                                                                                                                                                                                         (i)

                                                                                                                                                                                       tr-
                                                                                                                                                                                                                                                                                                                                         »
                                                                                                                                                                     ..

                                                                                                                                                                                                                   ,
                                                                                                                                                                .~




                                                                                        'tf b- ~~~                  ~~do. ~d~~                                                           I-

r                                                                                                                                                                                                   i"
            GRAVEL 5 to 30 mm, angular limestone wI some
            sandstone and chert, scattered sand (coarse                           '-~;'_<!..~1i:J.',.,C!.b.'~_C!..C1D ~qGA &:.~,                   g
           grained). brownish yellow (10YR 6ffi)                                "'"1\   ~!~          be         ~¢~t~:-'.s                :"
                                                                                                                                                                                                                       ~
b'     1--------------I--+--I-J1~~~ f.<: ?~~~p-. ri:~~~ ~~;
3.          GRAVEL 5 to 30 mm, dark brown (10YR 3/3)
                                                                                                                                                                                                                                                                                                                             :I:
~.                                                                            I~              ~~ ~ ~~ ~t ~.:~                                                                                                                                                                                                                C
                                                                                                                                                                                                                                                                                                                             til
[                                                                                                                                         .;q                                                                          ~                                         ,
o                                                                                         ~ ;~~ ~~~ :'i):~ ~~. ;:~:~                               8                                                                                                                                                   1110101-0639
                                                                                                                                                                                                                                                                                                       PUIJIped
~
o                                                                                                                              ~           ~                                                                           ~
                                                                                                                                                                                                                                                                                                       1765.2 ug/L TCE
fA
;:                                                                                                                                                                                                                 I                                                                                   0+1- 13 pCiIL ""Tc


1          GRAVEL (90%) 5 to 30 mm, trace sand (coarse
           grained). brownish yellow (10YR 6/S)

                                                                                                                                                                                    j~
                                                                                                                                                                                                        ~
                                                                                                                                                                                                                   ~
                                                                                                                                                                                                                                       -,
                                                                                                                                                                                                                                            I
                                                                                                                                                                                                                                            , I

                                                                                                                                                                                                                                                ' "1-
                                                                                                                                                                                                                                                                   i
                                                                                                                                                                                                                                                                                                                               "
                                                                                                                                                                                                                                                                                                                                         ,
"tI



                                                                                                                                                                                   ,
o           CLAY very dark gray (2.5YR N3/1) mottled at top wI
ii          brownish yellow (10YR S/6), dry, firm, micaceous
iii                                                                                                                                                                                 ~
                                                                                                                                        :.::.::
                                                                                                                                                                                   I
            CLAY (95%) trace slit, scattered sand (very fine                                                                                                                       I),                                                                                 ,
                                                                                                                                                                                                                                                                       1

            grained). very dark gray (2.5YR N3I1), very dry,. lean                                                                                                                                                                                                   :l
                                                                                                                                                                                                                                                                       I
                                                                                                                                                                            -
                                                                                                                                                                          --- '.                                                                                       '        '


                                                                                                                                                                                    \.                                                                                 i

            CLAY (85%) little sand (very fine grained), very dark                                                                                                                  <
            gray (2.5Y N3I1), micaceous



                                                                     ~~_+-+-r~~?{~z~~~
                                                                                                          "
                                                                                                                                                                                   ")
                                                                                                                                                                                    -,
                                                                                                                                                                                         ~, .                                                                              ,
                                                                                                                                                                                                                                                                                                       -
                                                                                                                                                                                                                                                                                                                                          s::
                                                                                                                                                                                         I)                                                                                iI
                                                                                                                                                                                                                                                                                                                                          0
                                                                                                                                                                                                                                                                                                                                          z
                                                                                                       1;(,        ~-:. :..-::. •  .:-:_::--.<                                                                                                                                                                                            !!!.
                                                                                                                                                                                    ~                                                                                      ,                                                             -<
 s::        CLAY (75%) some sand (very fine fine grained), very/                                                                                                                                                                                                                                                                          -n
                                                                                                                                                                                        ,~
                                                                                                                                                                                                                                                                           ,

 o
 ~     ~    _ _ _ _ _ _ (2.5Y N3/1)
           _dark gray _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _- J
                                                                     ~     I _+--+--+~:                                                                                                                                                                                    ,                                                              ~
~.                                                                                                                                                                                        )                                                                                ,
                                                                                                                                                                                                                                                                                                                                          (f)
                                                                                                                                                                                                                                                                                                                                         '<
                                                                                                                                                                                                                                                                                                                                          !l
"
o                                                                                                                                                                                         1                                                                                                                                               CD
                                                                                                                                                                                                                                                                                                                                         .3




                                                                                                                                                                                                                                                                                                                                                   II
3                                                                                                                                                                                        ~'
~.                                                                                                                                                                                                                                                                             !
 g                                                                                                                                                                                                                                                                             :
                                                                                                                                                                                                                                                                               I

                                                                                                                                                                                                                                                                               I                                                               '       ~
                                                                                                                                                                                                                                                                               I
                                                                                                                                                                                                                                                                               I                                                                   .g;
                                                                                                                  r:r~~;~~ ~                                                                                                                                                   ~                                                                       CD
            CLAY (90%) trace sand. very dark gray (2.5Y N3/1)
                                                                                                                             :;:""':':'=::-f..f.
                                                                                                                                                                                                                                                                                i                                                                  ~~
                                                                                                                                                                                                                                                                                                                                                   ~"
                                                                                       ,:..'=;:.:.'=;:-:..                   ~::


                                                                                                                                                                                                                                                                                                       1110101-0640                                P
            GRAVEL (9q%) 1 to 20 mm. angular, trace ~an~ \I-~+-+I~-I-+-{I':'~'=:~=:'.:.'~:~=:~='::'                                                                                                                                                                                                                                                ~
                                                                                                                                                                                                                                                                                                       Pumped
                                                                                                                                                                                                                                            rr-
                                                                                                                                                                                                                                                                                                                                                   ~
                                                                                                                                                                                                                                                                                                       5U ug/L TCE
            (coarse grained, pyritized). very dark gray (2.5Y                                                     l~ti~~On~aU                                                                                                                                                                          5 +1- 19 pCi/L ""Tc
            ~)                                                                                                                                      ~                                                                                                                               :



                                                                                                                                                                                                                                                                                                                                                   ~
            150                  TOTAL DEPTH                                                                                                                                                        I
                                                                                                                                                                                                    I
                                                                                                                                                                                                    ,




                                                                                                                                                                                                                                                                                                                                 ,   ,             ~
                                                                                                                                                                                                                                        .,

                                                                                                                   1



                      LITHOLOGY
                                                                  o   GAMMA-API   100                  100       NEUTRON POROSITY 0
                                                                                                                   I              ,
                                                                                                       iL
                                                                                                       I'                                                                       ~
                                                                                                                                                                                                                      WL                            ANALYTICAL     HYDRO
                                                                                                                   I                                                                                                                                               UNIT

        CLAY (60%) silty, trace sand (very fine grained                                                            I                                                     ~
                                                                                                                                                                                                                                                                   I     I


        quartz), brownish yellow (10YR 7/6), soft                                                                  I                                                     ~
                                                                                                                                                                  c
       GRAVEL (50%) 1 to 10 mm, angular chert, sandy
                                                                                                                                                                 ~                   1


       (very fine to fine grained, poorly sorted, clear to very                           ......
                                                                                          o
                                                                                                                                                                         '\
       pale brown quartz), trace silt, yellowish brown (10YR
       6/8), gravel size increases t05 to 10 mm at base                                                                                                          .,      )           \
                                                                                                                                                                                     1
                                                                                                                                                                                     I
                                                                                                                                                                                      i
                                                                                                                                                                                      i
                                                                                                                                                                                    ·1
                                                                                                                                                                                      I
                                                                                                                                                                     )                I
                                                                                                                                                                                      I
                                                                                                                                                                                         ,
       CLAY (80%) little silt, trace sand (very fine grained,                                                                                                                         i
       well sorted clear quartz), light gray (10YR 7/2)                                                                                                          •                       'I

                                                                                                                                                                                         1
                                                                                                                                                                                                                                                                   :r:
       mottled wi yellow (10YR 7/6)                                                                                                                              ••                       I
                                                                                                                                                                                          I                                                                        c
                                                                                                                                                                                                                                                                   ~

 (")                                                                                                                                                                                                                                                               po
~
                                                                                                                                                                                              1
       CLAY (60%) sandy (very fine grained, well sorted                                                                                                          \                            I                                                                    :r:    c
~.     clear quartz), light gray (10YR 7/2) mottled wi yellow                                                                                                                                 !~                                                                   c:     (")

:l       OYR                                                                                                                                                     I                            ;:-'
                                                                                                                                                                                              ,(11                                                                 '"    :;0
                                                                                                                                                                                                                                                                         en
~                                                                                                                                                                                             i-
o                                                                                                                                                           .I                                ,
CD

..
'0
o
       GRAVEL 5 mm, rounded, sandy to silty matrix,                                                                                                     I(                                    I               t.)


;:
       yellow brown (10YR 5/6) to brown yellow (10YR 6/6)
                                                                                                                                              r                                                   i           '"
                                                                                                                                                                                                              ~

                                                                                                                                               \                                                  !
                                                                                                                                                                                                  1


       GRAVEL (70%) 2 to 5 mm, angular chert, sandy,                                                                                                    ~                                         ;
                                                                                                                                                                                                  ,
       trace silt, multicolor
                                                                                                                                                   <
       GRAVEL (80%) 10 to 15 mm, angular chert wi
                                                                                                                                                    I)
       occasional sandstone, little sand, light gray (10YR                                                                                              ~
       7/1) to yellowish red (5VR 5/8) to gray (10YR 812)                                                                                          (
       CLAY (90%) trace gravel (20 mm), light gray (2.5V                                                                                       I
                                                                                                                                            iI""                                                                                                                   :r:
       710), firm, homogeneous                                                                                                                                                                                                                                     c:
                                                                                                                                            ~                                                                                                                      ,
                                                                                                                                                                                                                                                                   t.)
                                                                                                                                                                                                                                                                              lr

       GRAVEL (90%) 10 to 15 mm, angular chert, trace
                                                                                                                                ~                                                                                                                                             ~


       sand, light gray (7.SVR N71O)                                                                                                        1\
                                                                                                                                             \                                                        i
                                                                                                                                                        1\                                            1


                                                                                                                                                                                                      :
                                                                                                                                                                                                                                              1110101-0751
                                                                                                                                                                                                                                              Pumped
       GRAVEL 2 to 5 mm, subangular to subrounded, ,                                                                                                        }                                         ,
                                                                                                                                                                                                                                              5U. ug/L TCE
i
                                                                                                                                                                                                      1
       chert, light gray (7.SYR N7/0)
                                                                                                                                                                                                      i
~ r--------------------------------------+~~
                                                                                                                                                         \.                    1                      I
                                                                                                                                                                                                      1
                                                                                                                                                                                                                                              4 +/- 3 pCi/L"'-C
(")
g      GRAVEL (90%) 10 mm to 20 mm, angular chert,
                                                                                                                                                         )
g.
~
       some fractures indicating larger pieces, trace sand,
       light gray (7.5YR N7/0)
~r-----------------------------------~~~~~~~~~~~~
                                                                                                                                                         "                                                            0)
                                                                                                                                                                                                                      <»                      1110101-0753
                                                                                                                                                                                                                                                                   :r:
                                                                                                                                                                                                                                                                   c
                                                                                                                                                                                                                                                                   UI
                                                                                                                                                                                                                                                                         :;0

                                                                                                                                                                                                                                                                         ~
                                                                                                                                                                                                                      i;j.....r               Pumped
                                                                                                                                                             ~
o      GRAVEL (90%) 2 to 20 mm, angular chert, some                                                                                                                           IT                                           -?                 5U ug/L TCE
CD

..
'0
o      fractures indicating larger pieces, trace sand, light
                                                                                                                                                        I
                                                                                                                                                                                                          \
                                                                                                                                                                                                          !
                                                                                                                                                                                                                                .~ '"         o+1- 0 pCiIL "'-C
;:     gray (7.5YR N7/0)
                                                                                                                                                    ~

       GRAVEL (60%) 2. to 20 mm, angular chert, sandy
       (very fine to very coarse grained, moderately sorted,
       subrounded, light gray (SVR 7/1)


                                                                                        '.0)
                                                                                         o
                                                                                                                                ~.
                                                                                                                                              -          I
                                                                                                                                                                               I                              I
                                                                                                                                                                                                              1
                                                                                                                                                                                                              i
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                                                                                                                                                                                                              I
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                                                                                                                                                                                                                                        :".
                                                                                                                                                                                                                                        ~
                                                                                                                                                                                                                                                    ,


                                                                                                                                                                                                                                               1110101-0752
                                                                                                                                                                                                                                              ,Pumped
                                                                                                                                                                                                                                               5U .ug/l TCE
                                                                                                                                                                                                                                                                         ,
                                                                                                                                                                                                                                                                         I




       CLAY light olive brown (2.5V S/4) mottled wi light
                                                                                                                            C                                                                                 !
                                                                                                                                                                                                              I
                                                                                                                                                                                                                                               o +/~O pCiIL"'-C
       brownish gray (10YR 6/2), firm, homogeneous, iron                                                                                                                                                      i
       staining                                                                                                                                                                                               ,
                                                                                                                                                                                                                  ;
                                                                                                                            \~
                                                                                                                             Ir""
                                                                                                                            ~
                                                                                                                                l~
                                                                                                                                t


       CLAY (95%) trace sand (light gray quartz), dark gray                                                             ,
                                                                                                                        J                      ,.




       (2.SV N4/0), firm homogeneous                                                                                                                                                                                                           .,                            3:
                                                                                                                            J                                                                                                                                                0
                                                                                                                                                                                                                                                                             z
                                                                                                                        <.~
                                                                                                                                                                                                                                                                             Ql
                                                                                                                                                                                                                                                                         ~.

                                                                                                                        . II                                                                                                                                                 .."


       CLAY (90%) trace silt, dark gray (2.5Y N4IO),
       increasing softness
                                                                                                                       1<•                                                                                                                                               '<
                                                                                                                                                                                                                                                                             ~
                                                                                                                                                                                                                                                                             en
                                                                                                                                                                                                                                                                             !!!.
                                                                                                                       .~                                                                                                                                                 ID
                                                                                         ~
                                                                                         ......                                                                                                                                                                              3
                                                                                         o
                                                                                                                            \
       CLAY (70%) some silt, abund,ant biotite wi some                                                                  (
       Iignitic material, dark gray (2.SY N4/0), soft


       CLAY (60%) silty, decresing biotite, occasional sand
       (quartz), dark gray (2.SY N4/0) increasing softness                                                   ,                  "
                                                                                                                                I'"

~
Z
Ql
~.

.."
       CLAY (60%) sandy (fine to verY fine grained,
       moderately sorted), trace biotite, trace pyrite, gray
                                                                                                                                '"                                            rr                                                              1110101-0754
                                                                                                                                                                                                                                              Pumped
o      (2.5Y N6/0), soft                                                                                                                J                                                                                                     5U . ug/L TCE.
3                                                                                                                                   I                                                                                                         9 +/~ 42 pCi/L "Tc
~.




g~~~±±±HI.                                                                                                                                                                                                             !                                                            "'tim
                                                                                                                                                                                                                       1
                                                                                                                                                                                                                                                                                    G')iD
       CLAY (80%) little sand (fine to very fine grained,                                                                                                                                                                                                                           0<
                                                                                                                                                                                                                       I                                                            "'tI~
       moderately sorted), trace biotite, trace pyrite, gray                                                                                                                                                                                                                        Ocr
                                                                                                                                                                                                                       ,                                                            g::!
       (2.SY N6/0), soft
                                                                                                                                    I                                                                                  I
                                                                                                                                                                                                                                              1110101-0755
                                                                                                                                                                                                                                                                                    at.)
                                                                                                                                                                                                                                                                                    .. UI
                                                                                                                                ~                                             r-r                                       i                     Pumpeci                               z:....
                                                                                                                                                                                                                                                                                    ~
                                                                                                                                                                                                                                                                                            .....r
                                                                                                                                                                                                                                                                                            ...
       GRAVEL (60%) 8 to 10 mm sandstone, sandy (fine                                                                                                                                                                                         5U' ug/L TCE
       to very fine grained, pyritized), gray (2.5V N5/0),                                                                                  C>                                                                             ,
                                                                                                                                                                                                                                              ~ +/- 70 pCi/L "Tc                    ~
       hard to very firm                .                                                                                       )                                                                                          I
                                                                                                                                                                                                                           !
                                                                                                                                                                                                                                                                                    <»
                                                                                                                                                                                                                                                                                    m
                                                                                                                                ')                                                                                         I

                                                                                                                                                                                                                           i                                                        '"
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       CLAY (60%) sandy (very fine to t1ne.grained, gray to                                                                     -'
                                                                                                                                ,
                                                                                                                                                                                                                           I


                                                                                                                                                                                                                           I
                                                                                                                                                                                                                                                                                    '"
                                                                                                                                                                                                                                                                                    0
                                                                                                                                                                                                                                                                                    :....
       clear), abundant mica, gray (1 OYR 6/1), soft                                                                                                                                                                        ;
                                                                                                                                                                                                                            ,
                                                                                                                                                                                                                               i

                                                                                                                                                                                                                                                                                    ~
                                                                                                                                                                                                                               I
       150                TOTAL DEPTH


                                                                                                  ;

                                                                                                  :
                                                                                                  ,
                                                                                                   ,

                                                                                                                                                                                                                                !                                        ,If '
                                                                                                                                                                                                                                                                                    0
                                                                                                                                                                                                                                                                                    b
                                                                                                                                                                                                                                                                                    ':":'~~.'
                                                                                                                                                                                                                                                                                                            .   -                 ....
                                                                                                                                                                               NEUTRON POROSITY
                      LITHOLOGY                                        °         GAMMA-API                                                       100
                                                                                                                                                          ...
                                                                                                                                                                    100
                                                                                                                                                                                                                                                           °I   \
                                                                                                                                                                                                                                                                                          WL                                   ANALYTICAL                               HYDRO
                                                                                                                                                                                                                                                                                                                                                                        UNIT
                                                                                                                                                                                                                           .--                                  \

.1'                                                                                                                                                                                                                                    --b                                                                                                                              I

                                                                                                                                                                                                                                                            '   \
                                                                                                                                                                                                                                      /
                                                                                                                                                                                                                                        -

      SILT (8.0%)I.ittle clay, trace.~.scatte.red g. ravel <? to 3:/
      mm, limestone and sandstone), some iron staining,
      yellow Drown (10YR S/6)
                                   .                              ..


      CLAY (80%), little silt, oc~sional sand, light oliVe                                        - .. - "___ 00 __ ._00-                                                                                                                                                                         ..
                                                                                                    ..._. __...._. __ .. _._ ...._.
                                                                                                     . . . M _ _ _ . _ . , . . _ _ . _ •• _ _ _ . . . 0 . . .



      brown (2.SY S/4) mottled yellow brown (10YR S/6)                                                    =._.:".. =.._.:"_-.:._.:.....=
                                                                                               =:._ __....... __....... __ ......
                                                                                               -:=.:.....
      occasionally from iron staining                 '.
                                                                                               ---.. ......-.. --==:::: -=":':.7..- -
                                                                                                     .
                                                                                                     -:::::::
                                                                                               ._--_._-- _---_._--_. .. - _    .. -::::::
      CLAY (80%), little silt, occasional sand, light oliVe                                    ~~~~~~:-=~~:~~~;::~~--- ~                                                                                                                                                                                                                                                :r:
                                                                                                                                                                                                                                                                                                                                                                        c
                                                                                                                                                                                                                                                                                                                                                                        ....
      brown (2.SY S/4) increased mottled yellow brown
      (10YR S/6) from iron staining                                    r-+-;-~~-~~~~~~~~~~~~~~~                                                                                                                                                                                                                                                                         go
                                                                                                                                                                                                                                                                                                                                                                        :r:
                                                                                                                                                                                                                                                                                                                                                                        c
                                                                                                                                                                                                                                                                                                                                                                        I\J


                                                                                                                                                                                                                                      \


                                                                                                                                                                                                            ..
                                                                                                                                                                                                                                          1
                                                                                                                                                                                                                                             \,  -d
                                                                                                                                                                                                                                                                                                                -
                                                                                                                                                                                                                                                                                                                          ."
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                                                                                                                                                                                                                                                                                                                                                                                  (')
                                                                                                                                                                                                                                                                                                                                                                                  ~
                                                                                                                                                                                                                                                                                                                                                                                  en

                                                                                                                                                                '~
                                                                                                                                                                           ----                                                              ,-                                                                                      "      '.




      SILT (8S%) little sand (very fine to fine grained,
                                                                                                                                                                                                                                                                        !
      subangular to angular', clear to milky quartz), very
      pale brown (10YR 7/4)
                                                                                                                                                                                                                                              \                         ,
                                                                                                                                                                                                                                                                        i
                                                                                                                                                                                                                                                                        i
                                                                                                                                                                                                                                      ",.,                              i .ao.
                                                                                                                                                                                                                                                                        I !D(1I

                                                                                                                                                                                               .   ..           ,-
                                                                                                                                                                                                                                 ~                                      I
                                                                                                                                                                                                                                                                        I:.n
                                                                                                                                                                                                                                                                        -"
                                                                                                                                                                                                                                                                        ~.
                                                                                                                                                                                                                                                                        en
                                                                                                                                                                                                                                                                            1-
                                                                                                                                                                                                                                                                                 qp
                                                                                                                                                                                                                                                                                                  ....                                                                      ~


      SILT (80%) little sand (very fine to fine grained,
      subangular to angular, clear to milky qu~rtz),
      scattered 10 to 20 mm gravel, brown yellow (10YR                                                                                                                                                          ~
      6/6)                                                                                                                                                                                                                                                                                             .~
                                                                                                                                                                                                                                                                                                           ....                                                         :r:
                                                                                                                                                                                                                ~                                                                                          ~                                                            c
                                                                                                                                                                                                                                                                                                                                                                        t.)


      SILT trace sand, light yellowish brown (10YR 6/4)
                                                                                                                                                                                                                ""
                                                                                                                                                                                                                l
                                                                                             '<;~::_·:.:~::::.:~::::.:c:~:::.:                                                                                  "-                                                                                                                                                      ,~        ,
                                                                                                                                                                                                                ~
                                                                                                                                                                                                                                                                                                                                                                                  I



      SAND very fine to occasionally coarse grained,                                                                                                                                                            ~    ..

      predominantly fine grained, silty in part, subangular,
      clear to translucent q4artz, trace mica, scattered
                                                                                                                                                                                                                h'                                                                                                                                                      :r:
                                                                                                                                                                                                                                                                                                                                                                        c
                                                                                                                                                                                                                                                                                                                                                                        .,.,
                                                                                                                                                                                                                ~
                                                                                           ~-.,'-'-1~ ..~.J~·'-'.:r~·,'-.:~~-.,
      dark accessory minerals, increased silt at bottom,


                                                                       ~~~--+.~~;~~j[~~~lt~l~
      yellowish brown (10YRS/4 to S/6)
                                                                                                                                                                                                                                                                            !l
                                                                                                                                                                I                                               \                                 ;-.
                                                                                                                                                                                                                                                                             i                                            1110101-063i
                                                                                                                                                                                                                "

                                                                                                                                                                \
                                                                                                                                                                                                                           ~
                                                                                                                                                                                                                                                                                                                          Pumped
      GRAVEL 2 to 30 mm, angular to subangular                                                                                                                                                                                                                                                                            SU ugll TCE
      limestone wI some sandstone a'nd scattered quartz,                                                                                                                                                                                                                                                                  11 +1- 2S pCill ""Tc
      little sand (medium to coarse gra'ined) scattered
      chert, abundant iron staining on weathered surfaces
                                                                                                                                                                                                                                                                                 !
                                                                                                                                                                                                                                                                                 I                                                                                                ~
                                                                                                                                                                                                                                                                                 I                                                                                                (j)
                                                                                                                                                                                                                                                                                 I
                                                                                                                                                                                                                                                                                                                          1110101-0633                                            ~

                                                                                                                                                                                                                                 1                     I                                                                  Pumped
                                                                                                                                                                                                                                                                                                                          40.7 ugll TCE
                                                                                                                                                                                                                                                                                                                                                                        :r:
                                                                                                                                                                                                                                                                                                                                                                        c
                                                                                                                                                                                                                             J                                                   !                                        21 +1- 9 pCill ""Tc
                                                                                                                                                                                                                                                                                                                                                                        (11




                                                                                                                                                                                                                             ,
                                                                                                                                                                                                                             "   ~
                                                                                                                                                                                                                                                                                 :
                                                                                                                                                                                                                                                                                     I
                                                                                                                                                                                                                                                                                     I
                                                                                                                                                                                                                                                                                     i,
                                                                                                                                                                    -_.-   ..-- .... ---                        .. _." .     -- ---           - - -,.       ----,-----                                                                   -_.-----_._-.-- --_ ...             .--- .           .---".--
                                                                                                                                                                                                                                                                   :
                                                                                                                                                                                                                             I'

                                                                                                                                                                                                                             I
                                                                                                                                                                                                                                                  tT
                                                                                                                                                                                                                ~          ...                                                                                                                                                    ,
                                                                                                                                                                                           (                                                                                                                                                                                      I
                                                                                                                                                                                                        ,                                                                                                                 1110101-0634
      CLAY (90%) trace silt. very dark gray (2~SYR N3/1),                                                                                                                                                                                                                                                                 Pumped
      slightly plastic, firm to stiff, homogeneous                                                                                                                                                 1\                                                               "                                                     60.7 ugll TCE
                                                                                                                                                                                                                                                                                                                          3J ugll cis DCE
      SAND very fine grained, very dark gray (2.SY N/3) at                                                                                                                                         ~                                                                                                                      16+1- 61 pCill ""Tc
      top, becoming Iithified at 116.S', predominantly                                                                                                                                              '-,                                                                                   :
      medium grained, clear to milky quartz, pyritized,                                                                                                                                                                                                                                   :
      some mica, very dark gray brown (10YR 3/2),                                                                                                                                                       J                                         T                                       I                                1.110101-Q63S
      unconsolidated at 117'                               /'"                                                                                                                                                                                         I                                  !                               .Pumped
                                                                                                                                                                I
                                                                                                                                                                ,
                                                                                                                                                                                                   "                                              ..                    -_."              I
                                                                                                                                                                                                                                                                                          ,                       ;..0.
                                                                                                                                                                                                                                                                                                                  I\J
                                                                                                                                                                                                                                                                                                                  ~
                                                                                                                                                                                                                                                                                                                           SU_ugll TCE
                                                                                                                                                                                                                                                                                                                           4 +/- 6 pCilL ""Tc
      SAND very fine to fine grained becoming coarser wi .                                                                                                      I                                                                                                                                                 ....
      depth, subangular to angular, cle.arto milky to                                                                                                                                                           )
      translucent quartz, trace silt, brown yellow (10YR
      6/6)
                                                                           ~~~::.-7:~~..::f.:¥...'::7.¥.7:~t:..:-:~~J
                                                                           .:.:: .-0:.:: .-..:. :: •..:.::....:. ::.•...•. ::.•.. :~                            i                                               D                                                                                                                                                                 ;:
                                                                                                                                                                                                                                                                                              ,
                                                                                                                                                                                                                                                                                              ,                                                                                   ()
                                                                                                                                                                I                                                                                                                             ,
                                                                                                                                                                                                                                                                                              I                                                                                   Z
                                                                                                                                                                                                                                                                                                                                                                                  III·
                                                                                                                                                                                                            j
                                                                                                                                                                I                                                                                                                             i                           1110101,0636                                            ~.

                                                                                                                                                                                                                                                                                              !                           Pumped                                                  -n
                                                                                                                                                                                                                                                  tT
                                                                                                                                                                                                    "
                                                                                                                                                                                                    ')                                                                                        i                           1U uglL TeE                                             [

                                                                                                                                                                                                    ,
                                                                                                                                                                                                                                                                                                                          6 +,-.~ pCi/L ""Tc                                     'en      "Om
                                                                                                                                                                I                                                                                                                             i                                                                                           (j)jD:
                                                                                                                                                                                                        ~
                                                                                                                                                                                                                                 '.                                                                                                                                             '.~ C;j
                                                                                                                                                                                                                                                                                                                                                                                  iii "0::::
                                                                                                                                                                I                                                                                                                                                                                                                 3       (')0
                                                                                                                                                                I                                                                                                                                                                                                                         o:=!
                                                                                                                                                                                                                                                                                                                                                                                          0
                                                                                                                                                                                                                                                                                                                                                                                          at.)
      SILT sandy (interbedded very fine grain'ed sand),                                                                                                                                                 )                                                                                                                                                                                 .. CD
      very dark gray (SYR 4/1 to 3/1)                                                                                                                           I
                                                                                                                                                                I                                                                                                                                                                                                                         Z:...
                                                                                                                                                                                                                                                                                                                                                                                                   0

                                                                                                                                                                I
                                                                                                                                                                i                                   '-                                                                                                                                                                                    .... .ao.
                                                                                                                                                                                                                                                                                                                                                                                          .ao.
                                                                                                                                                                ,
                                                                                                                                                                !
                                                                                                                                                                                                   I~                                                                                                                                                                                     -"
                                                                                                                                                                                                                                                                                                                                                                                          t.)
                                                                                                                                                                                                                                                                                                                                                                                          p
      CLAY silty,sandy, micaceous, very dark gray (5YR .                                                                                                        I
                                                                                                                                                                I
                                                                                                                                                                                                    1                                                                                                                                                                                     ~
      4/1 to 3/1), firm to slightly plastic      .                                                                                                                                                                                                                                                                                                                                        .....:
                                                                                                                                                                i
                                                                                                                                                                I
                                                                                                                                                                                                                                                                                                                                                                                          ....
                                                                                                                                                                                                                                                                                                                                                                                          CD

                                                                                                                                                                I                                                                                                                                                                                                                         ?'
                                                                                                                                                                                                                                                                                                                                                                                          ....
                                                                                                                                                                I
      1S0                   TOTAL DEPTH                                                                                                                         I
                                                                                                                                                                                                                                                                                                                                                                                          ~
                                                                                                                                                                1

                                                                                                                                                                •
                                                                                                                                                                I
                                                                                                                                                                ,                                                                                                                                                                                                                         ~

                                                                                                                                                                                                                                                                                                       ;
                                                                                                                                                                                                                                                                                                                                                                   '.
                                                                                                                                                                                                                                                                                                                                                                        _.       . . ""   ~'"          .....
                                                                                                                                                                                          I
                       LITHOLOGY
                                                                  o     GAMMA-API'               100                     100 NEUTRON POROSITY                                        0
                                                                                                                                         ..                                                                  Wl,.                                         ANALYTICAL                          HYDRO
                                                                                                                                                                                                                _..                                                                           UNIT
         GRfNEL (75%),.3 to 5 mm, little sand (very fine                                                                                                            ,~,
                                                                                                                                                                                                                                            o·


                                                                                                                                                                                                                                                                                                  r-
        ~ralned, well sorted, subrounded, White [10YR 8/1}),
        h~'-e clay,. black (10YR 211) and yellowish brown                                                                                                       J
        (10YR 5/8)                               .
                                                                                                                                                            I
                                                                                                                                                            \
         CLAY (80%) little silt, occasional sand (very fine                                              (
        grained, sUbrounded to subangul2i\r, cle~r), light gray
        (10Yr 712) mottled broWnish yellow (10YR 6/B) wI
        iron staining, soft                     .




       CLAY (BO%), little sand (very fine to fine grained,
       poorly sorted, subrounded, occasional subangular,                                                 ~I                                                                                 i
                                                                                                                                                                                            ,
                                                                                                                                                                                                                                                                                               J:
                                                                                                                                                                                                                                                                                               c
                                                                                                                                                                                                                                                                                               -"
       multi-colored, clear to browish yellow (10YR 6/B) to                                                                                                                                 i                                                                                                  Qo
       red (2.SYR S/8) to black (2.SYR 2.5/0», light gray                                                    I                                                                                                                                                                                J:
       (10YR 7/2)                                                                                            I                                                                                                                                                                                 c
                                                                                                             I
                                                                                                                                                        /                                                                                                                                     I\J


                                                                                                                                                        \...
 C
'0
'0
 ~
 (")
       CLAY (60%), sandy (very fine to fine grained, poorly
       sorted, subrounded, occasional' subangular, multi-
                                                                                                        J
                                                                                                        0
                                                                                                                                                                    I
                                                                                                                                                                     I
                                                                                                                                                                                                                                                                                                            c
 o
a.     colored, clear to browish yellow (10YR 6/8) to red                                                    I
                                                                                                             I                                                      .......              '!
                                                                                                                                                                                                                                                                                                            (")
                                                                                                                                                                                                                                                                                                            :n
:i'    (2.SYR S/8) to black (2.5YR 2.5/0», trace garavel,                                                    I                                                                                                                                                                                              en
II)
       light gray (10YR 7/2)                                                                                 1                                                                ~
 :I
 [                                                                                                           i
                                                                                                                                                                                           i
 o
 II)
                                                                                                             I
                                                                                                             I                                                      ....... ~                   I
                                                                                                        ~I
'0
 o
 en
                                                                                                                                                                    It..                        I
                                                                                                                                                                                                I
                                                                                                                                                                    )
 ~r~S~A~N~D~'~'~~'O:%~)~Ve~ry::fi:ln~e~g:ra:in:e:d~,:s:U:b~ro~u~n~d:ed::t:o~1:Jl=l==t=1==1~~IiIl!l1ll
                                                                                                                                                                                                I
                                                                                                                                                                                                I             ",.

       subangular, multicolor,     clayey,   brownish yellow                                                 I                                                      )                           I             -...I
                                                                                                                                                                                                              ~
                                                                                                                                                                                                I             rq
       (10YR 6/6), soft  .
                                                                                                             I                                         .,..                                     I
                                                                                                                                                                                           en
                                                                                                             I
                                                                                                             I                                     i                                       •
                                                                                                                                                                                           0                                        '   .
                                                                                                              I                                                                             ~
                                                                                                        g}                                                                                      I
       CLAY (60%) sandy (very fine to medium grained,                                                        i                                                                                  iI .
                                                                                                         .i
                                                                                                                                                                                                                                                                                              J:
       poorly sorted, subangular to subrounded), silty in
       part, brownish yellow (10YR 6/6), soft
                                                                                                          !                                                                                      I~
                                                                                                                                                                                                 '0)
                                                                                                                                                                                                                                                                                              c
                                                                                                                                                                                                                                                                                              W
                                                                                                              i                                                                                 I,       -
                                                                                                              I                                                                                                       0)
                                                                                                             i                                                                                                        0
                                                                                                             I                                         ~                                                              0
                                                                                                                                                                                                                      u:!
                                                                                                        ~                                              'J..                                                                                                                                       ~.
                                                                                                                                                                                                                                                                                                            "r-
                                                                                                                                                   (                                                                                                                                              ~
       GRAVEL (60%) 5 to 10 mm chert, sandy (fine'                                                           I
       grained wi occas'ional medium grained; poorly                                                                                                   11
       sorted, subrounded to subangular),strong brOWn                                                                                                  ~
       (7.5YR 5/6) to reddish yellow (7.SYR 6/6),                                                                                                                                                                                                                                             J:
       unconsolidated                                                                                                                             .~                                                                                                                                          C
                                                                                                                                                                                                                                                                                              ....
                                                                                                        c                                               1
       GRAVEL 5 to 20 mm chert, sandy (fine grained wi
       occasional medium grained: poorly sorted,'
       subrounded. to subangular), strong . broWn (7.SYR
                                                                                                                                                       f;"
                                                                                                                                                       ~
                                                                                                                                                           "                                                                                                                                  ,

       516) to reddish yellow (7.5YR 616), unconsolidated                                                                                                                     IT                II                                                     1110101-069S


                                                                                                        .~
                                                                                                                                                                                                                                                       Pumped
                                                                                                                                                                ~
                                                                                                                                                                                 I
                                                                                                                                                                                                                                                       7.2 ugll TCE
       GRAVEL S to 30 mm chert wi sandstone, some                                                                                                                                                    I                                                 19 +1- 21 peill ""c
       sand, iron staining, hard, strong brown (7:SYR S/6),
                                                                                                                                                                                                                                                                                                            ::tJ
..     (Note: water color strong brown (7.5YR 4/6»                                                              I

                                                                                                                                                                                                                                                                                                            ~
                                                                                                                I



~ r---------------------~----------~t_~~~~~~~~~~~                                                                                                             , 4
                                                                                                                                                                                                                                                       1110101-0696
(")
o
:I
                                                                                                                                                                              T                                                                        Pumped
g                                                                                                                                                                                                    i
                                                                                                                                                                                                                                                       33.5 ugll TCE
~      GRAVEL 5 to 40 mm, increased sand (fine. to                                                      !                                                                                            !                                                 16J. ugll cis DeE
                                                                                                                                                                                                                                                                                              J:
i:     medium grained wi some coarse gnilined, poorly                                                                                                                                                \
                                                                                                                                                                                                                                                       17 +1- 21 pCill ""Tc                   c
                                                                                                                                                                                                                                                                                              UI
o      sorted. subrounded) increased Iron staining, reddish
.g
 o
       yellow (7.SYR 5/6), unconsolidated                                                                                                                                                            I
                                                                                                                                                                                                     I
 en                                                                                                                                                                                                  i
 s=                                                                                                                                                                                                  I
                                                                                                                                                                                                     i                      .....
                                                                                                                                                                                                                            0                          1110101-0697
                                                                                                                                                                              ''1' ---1-- --.""'-
                                                                                                                                                                                                     I

                                                                                                        .....                                                         .~                                                                              PUmped-- .. ·····
                                                                                                        g                                                                                                                   ~                         61 ugll TeE
       GRAVEL S to SO mm, sOme sand· (very fine t9'                                                                                                                 !o-'                                                                              29J ugll cis DCE
       coarse grained, poorly sorted, subrounded), little silt,                                                                                                                                                                                       7 +1, 21 pei/l ""Tc
       red yellow (7.SYR 6/8)                     .      '.
                                                                                                                                         .. I-- ~
       GRAVEL S to SO mm, little· sand (fine to coarse
                                                                                                                                            ')                                                                                                                                                              ,
       grained), little silt, red yellow (7.SYR 6/8)
                                                                                                        .....t
                                                                                                        .....
                                                                                                        0
                                                                                                                                     ,,.                                                                                                                                                      "             I


       SilT sandy (very fine grained, well sorted),                                                                              J
       micaceous, <1 mm laminar bedding, dark gray
                                                                                                                                 "-1\
       brown (10YR 4/2), conesive, non-plastic, occasional
       zones of iron oxides, drills into chips
                                                                                                                                          ,
                                                                                                        ...                              ,                                       1                       i           .-'
                                                                                                                                                                                                                                                       1110101-0698
                                                                                                                                                                                                                                                      -'~.un:iPe,d_ .. _ . _ ..     -..       -.-.     --          ..


                                                                                                        ~I
                                                                                                                                                                                                                                ,,,·, .. c _                                              ~



                                                                                                                                                                                 c ..    .'.'                 "': ..                                   3:3J ugll TCE
                                                                                                                                     /                                                                                                                .0. +1- 0 pCill ""Tc
                                                                                                                        .'
                                                                                                                                 !\..
       SAN,D (80%) very fl~e' grained, subrolJn~ed,
 ~                                                                                                                           "
 o     predominantly clear quartz), _some dai1c acCessory
 Z     minerals, little silt, dai1c gray (SYR 4/1)
 III                                                                                                                                                                                                                                                                                                        3:
                                                                                                                                                                                                                                                                                                            n
~.                                                                                                      .....                                1\                                                                                                                                                             Z
 'T1                                                                                                    ~I                                                                                                                                                                                                  III
 o                                                                                                                                                                                                                                                                                                      ~
 3
 ~ ~--------------~----------~---------;
 o
                                                                                                                I                    (
                                                                                                                                                                                                                                                                                                            "TI

                                                                                                                                                                                                                                                                                                            ~      "tim
                                                                                                                                                                                                                                                                                                                   GliD
 :I
                                                                                                                                 i   <.                                                                  I
                                                                                                                                                                                                                                                                                                            en
                                                                                                                                                                                                                                                                                                            ~
                                                                                                                                                                                                                                                                                                            S' (")0
                                                                                                                                                                                                                                                                                                                   0<
                                                                                                                                                                                                                                                                                                                   "tI~
                                                                                                                                                                                                         I
                                                                                                                                                                                                                                                                                                            ? g?
                                                                                                        ....                                                                                                                                                                                                       at.)
                                                                                                                                                                                                                                                                                                                   00-...1
                                                                                                                                                                                                                                                                                                                           0)
       SilT (80%) little saricj. (very finegrain~d:                                                     ~                                                                                                                                                                                                           Zen
       subrounded) dai1c gray (SYR 4/1), cohesive, slightly                                                                              I                                                                                                                                                                          ..... -...1
                                                                                                                                                                                                                                                                                                                   en
       plastic                                                                                                                                                                                                                                                                                                     en
                                                                                                                                                                                                                                                                                                                   .....
                                                                                                                  I                                                                                                                                                                                                .....
                                                                                                                  I I
                                                                                                                                                                                                                                                                                                                   .~
                                                                                                                                                                                                                                                                                                                    -"
                                                                                                                    I                                                                                                                                                                                               -"
                                                                                                                    I
                                                                                                                    I                                                                                                                                  1110101-0699                                                 t.)

                                                                                                         ...J                                                                                            i                                                                                                          en
                                                                                                         ~'
                                                                                                                                                                                  1                                                                    Pumped                                                       a,
                                                                                                                                                                                                         I                                             SU uglL TeE
                           TOTAL DEPTH
                                                                                                                    I

                                                                                                                    i                                                                                                                                  26 +1- 21 pCiiL        ""C
                                                                                                                                                                                                                                                                                                                   ~
        150




                                                                                                                                                                            ..                                                                                                                              ,
                                                                                                                                                                                                                                                                                                                   tJ
                                                                                                                                                                                                                                                                                                                   II-
                                                                                                                                                                           ..                                                                    00




                                                                                                                                                                                                         I
                               LITHOLOGY                                          GAMMA-API                100                   100   NEUTRON POROSITY                                           0
                                                                                                                                                                                                  ,                             WL                      ANALYTICAL            HYDRO
                                                                                                                                                                                                                                                                              UNIT
                SAND (55%), Vf~ry fine t~ mewuin grained, silty,                                                                                                                                        i                                                                          1\         1\
                some root hairs, yell~wish brown· (10YR 5/6)                                                                                                                                            !
                                                                                                                                                                                             "          I
                                                                                                                                                                                                        I
                                                                                                                                                                                                        I
                                                                                                                                                                                                        I

                                                                                                                                                                                                        i....
                                                                                                                                                                                                         ....
                                                                                                                                                                                                        0
               CLAY (80%) little silt, trace sand, yellowish brown                                                 ....
                                                                                                                   o~
                                                                                                                             :                                                                          N
                                                                                                                                                                                                        ,
               (10YR 5/4), slightly cohesive, damp
                                                                                                                             I                                                                          :
                                                                                                                                                                                                        I




               SILT trace clay, light yellowish brown (10YR 6/4) to
                                                                                                                   ~.
                                                                                                                                                                                                                                                                                :J:
               very pale brown (10YR 8/3), moist to wet                                                                                                                                                                                             1110101-0600                c
                                                                                                                                                                                             tT                                                     Bailed                      ....
                                                                                                                                                                                                                                                                               go
                                                                                                                                                                                              I                                                     SU uglL TCE
                                                                                                                                                                                                                                                                               :J:
                                                                                                                                                                                                            :                                       NA "Tc                     c
                                                                                                                                                                                                                                                                               I\)
               SILT some sand (very fine grained), occasional
     c         gravel (6 to 12 mm), yellow (10YR 6/4)                                                                                                                                                       :
    "t:I                                                                                                          Co)
    "t:I                                                                                                          0
    ~
    ()
                                                                                                                                                                                              I                                                                                         c
                                                                                                                                                                                                                                                                                        ()
    o
    ::>        SILT (8S%) little clay, trace sand (very fine grained),                                                                                                                        )                                                                                         ;0
                                                                                                                                                                                                                                                                                        (J)

    i::>
               brownish yellow (10YR 6/6)                                                                                                                                                     ,~
     ~
    ~ ~------------------~----~~~----~~
    "t:I                                                                                                          ....                  ~',   .                                                t.
    g    CLAY silty, silt increases wI depth, trace gravel,-                                                      0                                                                                                     ....
    iii' brownish yellow (10YR 6/6) (7 Does riot agree viiI                                                                                                                                                             ~
                                                                                                                                                                                                                        .... ~
               geophysics)                                                                                                                                                                                              N
                                                                                                                                                                                       .
               SILT (65%) sandy (very fine grained, subrou,n~ed to
                                                                                                                                                                   If'
               rounded), sand increases wI depth, brownish yellow                                                                                                  [1
               (10YR 6/6)
                                                                                                                                                               ~
                                                                                                                  ~
                                                                                                                                                                   ~                                                                                                         '1\
              SAND (90%) very fine grained, trace slit, trace                                                                                               .J
                                                                                                                                                          ~
              gravel, yellow (10YR 7/6) (? Does not agree wI                                                                                                                                                                                                                  :J:
                                                                                                                                                                                                                                                                              C
              geophysics)                                                                                                                                                                                                                                                     (,0)

                                                                                                                                                   ,1
                                                                                                                                                    \                                                                                                                        1           If
                                                                                                                                                                                                                                                                                         1\
                                                                                                                                                          r--..
              SAND little clay, yellow (10YR 7/6)                                                                                                                                                                                                                            :J:
                                                                                                                                                         ~"""'""                                                                                                             C
                                                                                                                                                                                                                                                                             '.jIoo.




I


              GRAVEL (90%) 6 to 18 mm, trace sand (coarse                                                                                         ~~
                                                                                                                                                            \.
                                                                                                                                                              -              t:::;
                                                                                                                                                                                             ,-                                                    1110101-0601
                                                                                                                                                                                                                                                   Pumped
                                                                                                                                                                                                                                                                             J



              grained), strong brown (7.5YR 5/6) ,                                                                ~                                                                                                                                3,J uglL TCE
                                                                                                                                                    J
                                                                                                                                                          '" ,
                                                                                                                                                                                                                i                                  o  +/- 20 pCilL "Tc
                                                                                                                                                  1""'-                                                         :
                                                                                                                                                                                                                ,
                                                                                                                                                                                                                                            ....
                                                                                                                                                                                                                                            (XI

                                                                                                                                                                                                                i                           CJ.!
              GRAVEL (90%) predominantly 3 to 6 mm wI trace 18                                                                                                     ~
              to 2S mm, angular limestone, trace sand (coarse                                                                                                                                                   !
              grained, clear quartz), trace clay, evidence of                                                     m                                 /'"                                                         I
                                                                                                                                                                                                                I
              recemented fragments, stong brown (7.SYR 5/6)                                                       0
                                                                                                                                                          r-. ~                                                 I
                                                                                                                                                                                                                !
                                                                                                                                                                                                                                                                        ..
                                                                                                                                                          p..-
                                                                                                                                        - II: ~
    i
                                                                                                                                                                                                                I




              GRAVEL (85%) predominantly 3 to 6 mm wI trace 18
                                                                                                                                                            --..                                                                g:
    ()
    o
    §:
              to 2S mm, angular limestone, trace silt, trace sand
              (coarse grained, clear quartz), stong brown (7.SYR                                                                                                   '"l                                          !
                                                                                                                                                                                                                    ~

                                                                                                                                                                                                                                ,
                                                                                                                                                                                                                                ~                  1110101-0602
                                                                                                                                                                                                                                                   Bailed
                                                                                                                                                                                                                                                                              :r
                                                                                                                                                                                                                                                                                        ;0

                                                                                                                                                                                                                                                                                        ~
              S/6)                                                                                                                                                                            I                 I                                  98iJgIL TCE               c:
    ~ ~----------------------------------~
    ~       GRAVEL (90%) predominantly 3 to 6 mm wI trace 18
                                                                                                                  8:,
                                                                                                                                                                        ~
                                                                                                                                                                                                                                                   NA     ""C                01

    o                                                                                                                                                                                                               I
    ~
           to 25 mm, angular limestone, trace sand (coarSe
           grained, clear quartz), trace clay, evidence of                                                              ,
                                                                                                                                                                   J                                                :
                                                                                                                                                                                                                    :
    g       recemenled fragments, stong brown (7.SYR 5/6)
    iii' ~----------------------~----------~
                                                                                                                                                                   1\                                                   I

            GRAVEL (80%) 3 to 6 mm'~l1glJlar;_li1:t!~_s~n,d_,_                                                    _i                                                \                                                   :
                                                                                                                                                    _-                               -_..-                                           --- -,        ----.---_.--                                            --
                                                                                                                  ....i
            (medium 10 coarse grained), yellow (10YR 7/6 to                                                                                   ...           --.- ,--         --~                      ,---.----                                                   ---

                                                                                                                         '
                                                                                                                                                                                                                        I
              7/8)
                                                                                                                  8i                                                         ~
              GRAVEL (9S%) 6 to 18 mm, angular, trace sand
              (coarse grained), yellow (10YR 7/6 to 7/8)
                                                                                                                        I
                                                                                                                        I

              GRAVEL predominantly 2 to 6 mm, little 9 to 12 mm,
              trace sand (coarse grained), reddish yellow (7.SYR
                                                                                                                                                                                                                                                   111(j101-0606
              6/6 to 6/8)                                                                                                                                                j


                                                                                                                  1
                                                                                                                                                                                                                                                   Pumped
                                                                                                                                                                                                                                                   33 uglL TCE
              GRAVEL (60%) some silt, trace sand (fine grained),
                                                                                                                                                                                                                                                   10 +/- 19 pCilL "Tc
              reddish yellow (7.SYR 6/6 to 6/8) ,                                                                                                                  I~                         I                                                                              'v
                                                                                                                       .1
                                                                                                                                                                   ~
                                                                                                                                                          i-'
              CLAY trace silt, trace sand (very finegrainect), '                                                                              4~
              micaceous, dark grayish brown (10YR 4/2), fat, very
              sticky
                                                                                                                  -"
                                                                                                                  -~                    ,.IJ
                                                                                                                                  Ie:
                                                                                                                                                                    -
           r ~S~A~N~D~S'T~O~N~E~v~ejry~fin~e~,~g~ra~in~e~d~;~lit ~l~e~S~ilt~in~up~p~e~r~ ][;f=J~ i l l l l l li
                                                                                                                                         --- .....
     ~         portion becoming cleaner wi de~th, micaceQlJ.!l, gft:jv
     ~         (10YR 5/1) weathered very pale brown (10YR 7/3)
    ~.         and yellow (10YR 7/6)    .                                                                                                                                    "                                                       ...           1110101-0608
                                                                                                                  ~                                                                                                                                Pumped
                                                                                                                                                                                                                                     (,0)
    'TI                                                                                                                                                                                                                              (,0)
     o                                                                                                                                                                                                                               ~             SU uglL TeE                          ;::
     3                                                                                                                                                                                                                               N             2 +/" 5 pCilL "Tc                    ~
    ~         SANDSTONE very fine grained, s,ubangular to                                                                                                                                                                                                                               III
    g'       ,subrounded, clear quartz, micaceous, ~me Iron                                                                                                                                                                                        1110101-0609                         ~ -em
                                                                                                                                                                                                                                                                                          (i)iD
              staining, gray (10YR S/1) weathered very pale brown-                                                                                                                                                                                                                      -n
                                                                                                                                                                                                                                                   (Duplicate)                                       o~
               (10YR 7/3) and yellow (10YR 7/6)
                                                                                                                       I                                                                      I                                                    Pumped                               i
                                                                                                                                                                                                                                                                                        (Jj
                                                                                                                                                                                                                                                                                                     -ee-
                                                                                                                                                                                                                                                                                                     ()o
                                                                                                                        1                                                                                                                          1.SJ ug/L TCE                                     o::!
                                                                                                                  ....:
                                                                                                                  ~
                                                                                                                                                                                                                                                   14 +/- 64 pCi/L "Tc                  1 a .....
                                                                                                                                                                                                                                                                                        3
                                                                                                                                                                                                                                                                                          ......     0
                                                                                                                                                                                                                                                                                                            (,0)



               CLAY silty, silt increases wi depth, dark gray brown
                                                                                                                                                                                                                                                                                                     z:,.
                                                                                                                        I
                                                                                                                                                                                                                                                                                                     m(,o)
               (SYR 4/1)
                                                                                                                  . !
                                                                                                                        I

                                                                                                                                                                                                                                                   1110101-0610
                                                                                                                                                                                                                                                                                                     ....
                                                                                                                                                                                                                                                                                                     (XI


                                                                                                                                                                                             rr-                                                   Pumped
                                                                                                                                                                                                                                                                                                     j»
                                                                                                                                                                                                                                                                                                     :E
                                                                                                                                                                                                                                                   1.3J ug/L TCE                                     ....
                                                                                                                                                                                                                            i                      o +1- 0 pCilL "Tc                                 I\)
                                                                                                                                                                                                                                                                                                     (J1
               147                 TOTAL DEPTH                                                                     ....
                                                                                                                   01
                                                                                                                                                                                                                                                                                                     to>
                                                                                                                   0


                                                                                                                                                                                                                                                                                                   iJJ·
                                                                                                                                                                                                                                                        - -,                            ,II
                                                                                                                                                                                                                                                                                                   ~.
                                                                                                                                                                                                                                                                                                   a>:~
                                                                                                                                                                                                                                                                                        '.. ;   ..   ~..           '
                           LITHOLOGY·                                  o                             100           NEUTRON POROSITY                   0    i
                                                                                                    1.00.
                                                                                                                                                           I                         WL                           ANALYTICAL                HYDRO
                                                                                                                                                      "    I
                                                                                                                                                          .I                                                                                UNIT
           .SILT (80%), iittle. sand, abundant organic debris,                                                                                             I                                                                                        r-    I
           .very dark gray brown (10YR 3/2), soft, slightly damp                                                                                           !
                                                                                                                                                           !
                                                                                                                                                           ,
                                                                                                                                                           I
           SILT clayey,' scattered iron oxide staining and
           laminations, yellowish brown (10YR 5/6)
                                                                                  ....
                                                                                  o
                                                                                                                                                               i
                                                                                                                                                               i
                                                                                            i
                                                                                                                                                               i
                                                                                                                                                               I
                                                                                                                                                               i

                                                                                            !                                 .
                                                                                            i
                                                                                            ;
                                                                                            I
           SILT some clay, trace sand (very fine to fine grained
           red chert), yellowish brown (10YR 5/6)
                                                                                                                                                               I
                                                                                                                                                                   1




           SILT (85%) little sand (very fine to fine grained red
           chert, increases to 30% and becomes predominantly
           very fine to medium grained, subangular to
           subrounded quartz), yellow (2.5Y 7/6) to olive yellow
                                                                                                                                                                   ;

           SAND (60%) very fine to coarse grained, poorly                                   I                                                                      ;
~          sorted, subangular quartz wI scattered chert,
1il        gravelly (3. to 6 mm wI some tQ 12 mm), tra!=fa silt,                                                                                                   i
                                                                                                                                                                   I                                                                        :I:
o~~~~~~~------~~-ri-~~                                                                  i                                                                          I
                                                                                                                                                                                                                                            c
                                                                                                                                                                                                                                            ~




                                                                       III
                                                                                        1       .
                                                                                            I                                                             ~                                                                                 Qo
                                                                                                                                                          ~

                                                                                        I                                                                 io.l                                                                              :I:
                                                                                        I                                                                 ~'                                                                                C
 ~         SILT clayey, trace sand (1?%) (yerY fine to fine.                            ;
                                                                                                                                                                                                                                            '"
                                                                                                                                                                                                                          "
                                                                                                                                                                   .i


 i
 ~
 ~
"0
 o
           grained, subang!Jlar to 5ubrounded, percentage
           increases wI depth), bro~ish yello",< (10YR 6/6) .
                                                                                        !
                                                                                                                                                                   I
                                                                                                                                                                   i                     ~
                                                                                                                                                                                                                                                         c
                                                                                                                                                                                                                                                         (")
                                                                                                                                                                                                                                                         ,~
 til
                                                                                                                                                                       I ~!»
~r-------------------------~~----~~--~                                                                                                                                 Iio.l Oi
                                                                                                                                                                       1(,). "                                 1110101-0611
                                                                                                                                                                       l-
           GRAVEL (65%) angular to subangular, some sand
                                                                                        1
                                                                                                                                                 1                     i'
                                                                                                                                                                       I,
                                                                                                                                                                                                          UI

                                                                                                                                                                                                          '"
                                                                                                                                                                                                          ~
                                                                                                                                                                                                               Bailed
                                                                                                                                                                                                               5U uglL TCE
           (fine to coarse grained, subangular), trace' silt,                                                                                                          I                                  ~    NA "Tc
                                                                                                                                                                       I
           brownish yellow (10YR 6/6)
                                                                                                                                                                        i
                                                                                                                                                                        I
                                                                                                                                                                        I
                                                                                                                                                                        ,
                                                                                                                                                                        1
                                                                                                                                                                                                 (J)
                                                                                                                                                                                                 0
          SAND (SO%) fine to medium grained, moderately                                                                                                                 i                        :....i
          sorted, subangular to subrounded, and 'SILT,                                                                                                                  I                        ~
          yellowish brown (10YR S/6)                                                                                                                                    i,
                                                                                                                                                                                                                                            ,~
                                                                                                                                                                        I
                                                                                        1                                                                               i                                                                       r-
          CLAY silty, trace sand (very fine to fine grained,                            i                                                                               I
                                                                                                                                                                        I
          subrounded to subangular), micaceous, pale yellow                                                                                                             i
          (2.SY 7/4)                                                                    I
                                                                                        i                                                                               !                                                                   :I:
                                                                                        I                                                                                                                                                   c
                                                                                                                                                                        I                                                                   w

          CLAY sandy (very fine to occasionally fine grained,                           i
                                                                                        1

          moderately well sorted, subangular to subrounded,
          light brownish gray (10YR 612)    .                                           i                                                                                  i
                                                                                        \                                                                                  ;
                                                                                                                                                                                                                                            ,
                                                                                        i
                                                                                        I
                                                                                        I
           SAND fine to medium grained, moderately sorted,                                                                                                                                                                                  :I:
           subangular to subrounded, clean, sCattered mica,                             I                                                                                                                                                   c
                                                                                                                                                                                                                                            ~
           light broWnish gray (10YR 6/2), grain size and mica                          I
           contenUncrease wI depth         .
                                                                                                                                                                                                                                                ~
                                                                                        I                                                                                                                      1110101-0612                  I'
                                                                                        i                                                         I                                                            Pumped
r

~
          GRAVEL (90%) 3 to 28 mm: angular to subangular
          wi occasional subrounded limestone, chert and
                                                                                        I
                                                                                        I
                                                                                        I
                                                                                                                                                                             i                                 441 ug/L TCE
                                                                                                                                                                                                               10.1 uglL 1,1 DCE
                                                                                                                                                                                                                                                         ,.
                                                                                                                                                                                                                                                         ;xl
                                                                                                                                                                                                                                                         Q

..,       sandstone, trace sand, brownish 'yellow (1 OYR 6/8)                           I
                                                                                        1
                                                                                                                                                                                                               20 +/- 21 pCilL "Tc
(")
                                                                                        I
~ ~--------~----------------~------~~~~~~~~~~~~.                                        I                                                                                                                                                   :I:
~.        GRAVEL (8S%) 6 to 2S mm, angular.to subrounded                                                                                                                                                                                    c
~         limestone, chert and sandstone, little sand, olive
                                                                                        !                                                                                                                      1110101-0613                 U1

          yellow (2.SY 6/6)                                                                                                                      ~I                                                            Pumped
                                                                                                                                  .- ..                                                                        677 ug/L TCE
~ ~~~~~~~~-------------------------+--r                                                                                                   --,.   -.
"0
o
                                                                                 ....                              .--
                                                                                                                                                                                                               15ugIL 1,1 DCE
                                                                                                                                                                                                               1.4J ug/L 1,1,1 TCA
til
;=                                                                               8                                 I
                                                                                                                   1
                                                                                                                                                                                                               53 +1- 22 pCilL "Tc
          GRAVEL (65%) 3 to 6 mm, some sand and silt,                                           i - f---
          yellow brown (10YR 6/8)
                                                                                                i - t---                                                                                                                                     If           If
                                                                                                I-'- f----
                                                                                                r-- ,--:.
          CLAY micaceous from 110' to 116', very dark gra'y                      ....
                                                                                 .... i
          (2.SY N3/1), firm, dense, homogeneous,high                             o      I
          plasticity, moist, very stiCky




                                                                                        I
                                                                                        I
           CLAY little silt, trace sand (very fine to fine grained),             ~
                                                                                        I
           very dark gray (2.5Y N3/1)                                      ...   ~      I           .. -    "_.-
                                                                                                                   I
           CLAY silty, trace sand (verY fine to fine grained                            I
                                                                                        I
           quartz), micaceous, very dark gray (2.SY N3/1), firm,                                                                                                                                                                                         ;:
           sJigh"tly moist           "      .          ..                               I                                                                                                                                                                ~
                                                                                                                                                                                                                                                         QI

         . SAND (65%) very fine to: fine g'fained, subroun~ed,                          I                                .'
                                                                                                                                                                                                                                                         ~    .
 s:        some silt, common dark gray' tf) bla~k accessory                             I                                                                                                                                                                "'Ii
~
~.
           minerals giving
           appearance, trace
                                overall' "salt .ahd pepp~r"
                                         . very dark gray (2.5Y .                       !
                                                                                                                                                                                             '       ,
                                                                                                                                                                                                                                                         i
                                                                                                                                                                                                                                                         (Jj
-.;;       N3/1) to dark                    4/1)                                        i                                                                                                                                                                '<

~      ~----~----~--~~~~~------------,                                                  l                                                                                                                                                                ~ G'>iD  ."m
                                                                                                                                                                                                                                                         3 0<
3          SILT sandy, micaceous, trace black accessory                                                                                                                                                                                                           ." ~.
!!l-       minerals, very dark gray (10YR 3/1) .
                                                                                                                                                                                                                                                                  8~
                                                                                        ,
ei"                                                                                                                                                                                                            1110101-0614
:l
                                                                                                                                                                                                               Pumped
           SAND (65%) very fine grained, fairly well sorted,                                                                                     1                               i                             5 ug/L TCE                                         aw
                                                                                                                                                                                                                                                                  .. til
                                                                                                                                                                                                                                                                        ~


           subangular, common black accesssory minerals,                                                                                                                         I                             57 +1- 22 pCUL   "'-C                              (Jj(c
                                                                                                                                                                                                                                                                  ~co
           trace glauconite, silty, gray (SY 5/1) to dark gray (SY
           4/1)                                                                                                                                                                                                                                                   '"
                                                                                                                                                                                                                                                                  '"
                                                                                                                                                                                                                                                                  w
                                                                                                                                                                                                                                                                  ~
           SAND (80%) very fine to fine grained, moderately,                                                                                                                                                                                                      ~
           well sorted, subangular to' subrounded, abundant'                                                                                                                                                   1110101-0615                                       (J)
                                                                                                                                                                                                                                                                  w
           black accessory minerals, common glauconite, gr.ay                                                                                                                                                  Pumped                                             co
         . (SY 5/1) to dark gr~y (SY 4/1)                 .                                                                                      1                                                             2 ug/L TCE                                         i»
                                                                                                                                                                                 i                             5 +1- 25 pCi/L "Tc
           150               TOTAL DEPTH                                                                                                                                         I
                                                                                                                                                                                                                                                :
                                                                                                                                                                                                                                                                  IU
                                                                                                                                                                                                                                                                  ~

                                                                                                                                                                                     I
                                                                                                                                                                                                                                       .-                '.~      ~
                     LITHOLOGY                                 GAMMA-APi    100         100 NEUTRON POROSITY 0
                                                                                                                                   WL          ANALYTICAL               HYDRO
                                                                                                                                                                        UNIT

       SILT (70%), some sand, very fine            grained,
       subrounded, yellowish brown (10YR 514)




      SILT some sand (very fine grained, subangular),                               I
      trace clay, occasional Iron oXide stainIng, dark brown                      oir.--+---f-+--+---1~-I-"""'-~-+-"""
      (10YR 4/3)                           .                                           II--+-+---+--+--I---+--J-I--~
                                                                                       1~~-4--+-~~~4_-+--~-+-~

                                                                                       1f-~-4--+-~~~4_-+-~-+-~
                                                                                       1~-4-+~~4-+-+-~
      SILT some clay, trace sand (very fine to fine grained
      red chert), yellowish brown (10YR 5/6)
                                                                                  NI 1---'~--+--+-+--+--+-+--4--I
                                                                                  9[

      SAND (50%) very fine to fine grained, moderately
      sorted, subangular quartz wI some feldspar, sand
      percentage and grain size increase wI depth, and                                                                                                                  :I:
      SILT (50%), brownish yellow (10YR 6/6)                                                                                                                            ....
                                                                                                                                                                        C

      SAND (60%) very fine to coarse grained, poorly
      sorted, subangular quartz wI some feldspar, gravelly
      (6 to 18 mm, angular chert and sandstone), trace
      silt, brownish yellow (10YR 6/6)                                             ,
                                                                                  ,it-:-+-4-+--+----'i~4_-+-.f-+__l
                                                                                   I
      SILT (60%), some sand (30%)(very ~ne to medium                               Il---if--l.-+---I-~-+-+-+_+__J
      grained, moderately sorted" subrounded), light
      yellow brown (10YR 6/4) .                                                   ~1~~-+-+-+-+--l-+-+--1                  i
                                                                                                                          I
                                                                                   ir-~+-+-+-+-~~~~~                       i
                                                                                  ,I
                                                                                                                           iI'
                                                                                                                           I
      GRAVEL (50%) to 18 mm, angula,r to subrounded                                                                      .,le...
      chert and sandstone, and SAND (very fille to coarse                                                                  co
      grained, subangular quartz wI some feldspar), trace                                                                  ....
                                                                                                                           CD
                                                                                                                           ,-
      silt, brownish yellow (1 OYR 6/6)
                                                                                                                           i


      SAND (50%) very fine to fine grained, moderately
      sorted, subangular quartz,and SILT, light yellowish
      brown (10YR 6/4)                   ,

                                                                                  gl~HH__+--+-+_+_+_+__1
                                                                                   1~+_4__I__I_-f..-+___j.~~~
                                                                                   .~+-+--+-f--+-+-f---I--I
      SAND (50%) very fine to fine grained, moderately
      sorted, subangular quartz, and SILT,brownish
      yellow (10YR 6/8)



      SAND (80%) very fine grained, well sorted,
      subrounded quartz wI trace. fine grained feldspar,
      little silt, light gray (10YR 7/2), cohesive
                                                                                                                                             1110101-0231
                                                                                                                                            ,P,umped
                                                                                                                                             104 uglL TCE
                                                                                                                                             57 +1- 22 pCi/L "Tc

      GRAVEL (80%) 3 to 25 mm oblong, subrounded to
      angular chert, weathered shale and sandstone, little
      sand (fine to coarse grained, poorly sorted), reddish                                                                                                             ::t
      yellow (7.5YR 6/6)                                                                                                                    1110101-0232                C
                                                                                                                                                                        UI
                                                                                                                                            Pumped
                                                                                                                                            1722 uglLTCE
                                                                                                                                            29 +1- 21 pCilL "Tc


                                                                                                                                            1110101-0233
                                                                                                                                            Pumped
                                                                                                                                            1'7'00 ug/L TCE .. __ '..
                                                                                                                                            58 +1- 21 pCi/L "Tc




      CLAY micaceous, trace glauconite and blue-green
      mudstone liths, black (5Y 2.5/1), very fat. plastic

                                                                                                                                    ....
                                                                                                                                    ....
                                                                                                                                    Ol

                                                                                                                                    ~        1110101-0236
                                                                                                                                             Bailed
                                                                                                                                             "'h.6 uglL TeE
      SANDSTONE very fine grained, w