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									FACT SHEET FOR STATE WASTE DISCHARGE PERMIT ST-7384
           TIME OIL COMPANY (J-178047526)
FACT SHEET FOR STATE WASTE DISCHARGE PERMIT ST-7384                                                                                                   Page 2
TIME OIL COMPANY (J-178047526)

                                                                TABLE OF CONTENTS

INTRODUCTION .......................................................................................................................................................3

BACKGROUND INFORMATION ...........................................................................................................................4
DESCRIPTION OF THE FACILITY .......................................................................................................................................4
  History ......................................................................................................................................................................4
  Level Of Contamination And Ground Water Flow Direction...................................................................................4
  Soil Characteristic ....................................................................................................................................................4
REMEDIATION SYSTEM DESCRIPTION ................................................................................................................4
DESCRIPTION OF DISCHARGE................................................................................................................................5
WASTEWATER CHARACTERIZATION ..................................................................................................................5
PERMIT STATUS.........................................................................................................................................................6
PROPOSED PERMIT LIMITATIONS ....................................................................................................................6
TECHNOLOGY-BASED EFFLUENT LIMITATIONS ...............................................................................................................6
EFFLUENT LIMITATIONS BASED ON LOCAL LIMITS ..........................................................................................................6
MONITORING REQUIREMENTS..........................................................................................................................7

OTHER PERMIT CONDITIONS .............................................................................................................................7
REPORTING AND RECORDKEEPING ..................................................................................................................................7
OPERATIONS AND MAINTENANCE ...................................................................................................................................7
PROHIBITED DISCHARGES ...............................................................................................................................................7
DILUTION PROHIBITED ....................................................................................................................................................7
SPILL PLAN .....................................................................................................................................................................7
PUBLIC NOTIFICATION OF NONCOMPLIANCE.............................................................................................8

RECOMMENDATION FOR PERMIT ISSUANCE ...............................................................................................8

REFERENCES FOR TEXT AND APPENDICES...................................................................................................9

APPENDIX A – PUBLIC INVOLVEMENT INFORMATION ...........................................................................10
FACT SHEET FOR STATE WASTE DISCHARGE PERMIT ST-7384                                 Page 3
TIME OIL COMPANY (J-178047526)


                                       INTRODUCTION

This fact sheet is a companion document to the draft State Waste Discharge Permit No. ST-7384.
The Department of Ecology (the Department) is proposing to issue this permit, which will allow
discharge of wastewater to the City of Edmonds POTW. This fact sheet explains the nature of
the proposed discharge, the Department’s decisions on limiting the pollutants in the wastewater,
and the regulatory and technical bases for those decisions.
Washington State law (RCW 90.48.080 and 90.48.160) requires that a permit be issued before
discharge of wastewater to waters of the state is allowed. This statute includes commercial or
industrial discharges to sewerage systems operated by municipalities or public entities which
discharge into public waters of the state. Regulations adopted by the state include procedures for
issuing permits and establish requirements which are to be included in the permit (chapter
173-216 WAC).
This fact sheet and draft permit are available for review by interested persons as described in
Appendix A—Public Involvement Information. Site maps are enclosed in Appendix B.
The fact sheet and draft permit have been reviewed by the Permittee. Errors and omissions
identified in these reviews have been corrected before going to public notice. After the public
comment period has closed, the Department will summarize the substantive comments and the
response to each comment. The summary and response to comments will become part of the file
on the permit and parties submitting comments will receive a copy of the Department’s response.
The fact sheet will not be revised. Changes to the permit will be addressed in
Appendix C—Response to Comments.

                                 GENERAL INFORMATION
Applicant                  Time Oil Company (J-178047526)
Facility Name and          24205 - 56th Avenue W
Address                    Mountlake Terrace, WA
Type of Facility           Ground Water Remediation
Facility Discharge         Latitude: 47° 46' 46" N.      Longitude: 122° 18' 24" W.
Location
Treatment Plant            City of Edmonds WWTP
Receiving Discharge
Contact at Facility        Name:        Mark Chandler
                           Telephone #: (206) 285-2400
Responsible Official       Name:         H. Roger Holliday
                           Title:        President
                           Address:      2737 West Commodore Way
                                         Seattle, WA 98199-1233
FACT SHEET FOR STATE WASTE DISCHARGE PERMIT ST-7384                                 Page 4
TIME OIL COMPANY (J-178047526)


                              BACKGROUND INFORMATION

DESCRIPTION OF THE FACILITY
HISTORY

The site was formerly a retail gasoline station. It is currently leased by B & B Cable Company,
an underground cable installation contractor. This discharge application pertains to a ground
water remediation system installed to mitigate a release of hydrocarbons from the former
underground storage tank system at the site.

Three gasoline underground storage tanks (USTs) were removed from the northwest portion of
the site in June 1991. In May 1992, Environmental Science and Engineering, Inc., (ESE) was
retained by Time Oil Co. to perform a soil vapor survey at the site. The survey report concluded
that petroleum hydrocarbons were detected in soil vapor samples collected from within the
former UST basin to 12 feet below ground surface. An initial site assessment at the site was
conducted later in June 1992 including the installation, development, purging, and sampling of
seven (7) ground water monitoring wells. Four more wells were installed later in January 1994
and 1996 (Figure 1).

LEVEL OF CONTAMINATION AND GROUND WATER FLOW DIRECTION

Analytical results of soil sampling indicated that soil containing petroleum hydrocarbons is
presented within and south of the former UST basin. Shallow ground water flow was reported to
be generally consistent, with a flow direction to the south at a gradient of 0.033.

SOIL CHARACTERISTIC

The predominant soil type discovered in the soil borings and monitoring well bores was a silty
sand to sandy, clayey silt with a variable gravel content. Soil above the static groundwater level
containing petroleum hydrocarbons was reported to be confined to the former UST basin.

REMEDIATION SYSTEM DESCRIPTION

The soil and ground water remediation system proposed consists of a vapor extraction system
sized and plumbed to simultaneously remove soil vapor and ground water from six extraction
wells. Ground water is removed from the extraction wells by entrainment in soil vapor. The
ground water is separated from the vapor stream and treated using an oil/water separator (OWS),
a single tray air stripper, and an activated carbon polish. Treated ground water is to be
discharged to the City of Edmonds POTW.

A concrete pad and fenced enclosure has been constructed in the southern portion of the lot to
contain the remediation system equipment. The floor of the enclosure consists of a 15-foot by
15-foot, six-inch-thick wire-reinforced concrete pad, bermed for secondary containment, and
sloped to a 12-inch-diameter by 9-inch-deep sump. The berm is concrete, six inches high and six
inches wide. The sump is equipped with an automatic pump, which discharges accumulated
storm and/or spill water to the treatment system.
FACT SHEET FOR STATE WASTE DISCHARGE PERMIT ST-7384                                 Page 5
TIME OIL COMPANY (J-178047526)

A float switch is installed on the inside of the secondary containment berm to monitor for a high
water level within the secondary containment. A trigger of this float switch shuts down the
remediation system and causes the telemetry system to phone for maintenance.

The sanitary sewer connection is located on the west side of the treatment pad. An effluent
sample port and effluent flow meter are located at the discharge point prior to the sanitary sewer
system. The flow meter has a direct-reading digital display at the treatment pad, and is
connected to a telemetry system for remote monitoring. The flow meter reads the totalized flow
of discharge to the sanitary sewer system, and the flow rate of each batch discharged. The
discharge flow rate of each batch is approximately 4 gallons per minute (gpm).

DESCRIPTION OF DISCHARGE

The treated wastewater will be ultimately discharged to the Puget Sound after receiving
secondary treatment from the City of Edmonds (City) POTW. The City’s effluent is regulated
by NPDES Permit No. 002405-8. The plant is an upgraded secondary treatment (activated
sludge) facility with sludge incineration. Ash from the incinerator is thickened and dewatered by
a vacuum filter, and ultimately disposed of at the Cathcart Sanitary landfill. The design capacity
of the expanded secondary wastewater treatment plant is 11.8 million gallons per day (MGD).
The average flow for the maximum month is 8.5 MGD at the plant. The City’s effluent is
discharged through two submerged 36-inch diameter outfalls. Each outfall is equipped with a
160-foot
multi-port diffuser. Puget Sound in the vicinity of the City’s outfall is designated Class “AA”
Marine Water. Characteristic water uses include fish and shellfish rearing, spawning and
harvesting, wildlife habitat, commerce and navigation, and general recreation and aesthetic
enjoyment.

WASTEWATER CHARACTERIZATION

The proposed wastewater discharge is characterized for the following parameters after treatment:

Analyte                       Results

Oil & grease                  0.5 mg/L
pH                            6.3 and 9.3 s.u.
Lead                          8.33 μg/L
Benzene                       >0.5 μg/L
Toluene                       4.6 μg/L
Ethyl Benzene                 0.99 μg/L
Xylenes (total)               9.4 μg/L
TPH-G                         >250 μg/L
VOCs                          ND
TPH-G means total petroleum hydrocarbons, gasoline-range.
VOCs means volatile organic compounds.
FACT SHEET FOR STATE WASTE DISCHARGE PERMIT ST-7384                                Page 6
TIME OIL COMPANY (J-178047526)

PERMIT STATUS

The previous permit for this facility was issued on January 27, 1997. The previous permit placed
effluent limitations on flows, pH, Benzene, BTEX, and TPH-G. An application for a permit was
submitted to the Department on April 25, 2000, and accepted by the Department on
September 18, 2000.

                            PROPOSED PERMIT LIMITATIONS

State regulations require that limitations set forth in a waste discharge permit must be based on
the technology available to treat the pollutants (technology-based) or be based on the effects of
the pollutants to the POTW (local limits). Wastewater must be treated using all known,
available, and reasonable treatment (AKART) and not interfere with the operation of the POTW.
The minimum requirements to demonstrate compliance with the AKART standard and specific
design criteria for this facility were determined in the submitted permit application package on
July 24, 1996.
The more stringent of the local limits-based or technology-based limits are applied to each of the
parameters of concern. Each of these types of limits is described in more detail below.

TECHNOLOGY-BASED EFFLUENT LIMITATIONS
All waste discharge permits issued by the Department must specify conditions requiring
available and reasonable methods of prevention, control, and treatment of discharges to waters of
the state (WAC 173-216-110). The following permit limitations are necessary to satisfy the
requirement for AKART:
       Benzene        5 µg/L
       TPH-G          1.0 mg/L
       BTEX           100 µg/L
       BTEX means Benzene, Toluene, Ethyl Benzene, and total Xylenes.
       No effluent limit for lead is set this time, only monitoring is required.

EFFLUENT LIMITATIONS BASED ON LOCAL LIMITS
In order to protect City of Edmonds POTW (POTW) from pass-through, interference,
concentrations of toxic chemicals that would impair beneficial or designated uses of sludge, or
potentially hazardous exposure levels, limitations for certain parameters are necessary.
These limitations are based on local limits established by the POTW and codified in ordinance.
Applicable limits for this discharge include the following:
       pH      between 6 and 10 standard units
Pollutant concentrations in the proposed discharge with technology-based controls in place will
not cause problems at the receiving POTW such as interference, pass-through, or hazardous
exposure to POTW workers nor will it result in unacceptable pollutant levels in the POTW’s
sludge.
FACT SHEET FOR STATE WASTE DISCHARGE PERMIT ST-7384                                   Page 7
TIME OIL COMPANY (J-178047526)

                              MONITORING REQUIREMENTS

Monitoring, recording, and reporting are specified to verify that the treatment process is
functioning correctly, and that effluent limitations are being achieved (WAC 173-216-110).
The monitoring schedule is detailed in the proposed permit under Condition S2. Specified
monitoring frequencies take into account the quantity and variability of the discharge, the
treatment method, past compliance, significance of pollutants, and cost of monitoring.


                               OTHER PERMIT CONDITIONS

REPORTING AND RECORDKEEPING
The conditions of S.3. are based on the authority to specify any appropriate reporting and
recordkeeping requirements to prevent and control waste discharges [WAC 273-216-110 and 40
CFR 403.12 (e),(g), and (h)].

OPERATIONS AND MAINTENANCE
The proposed permit contains condition S.4. as authorized under RCW 90.48.110, WAC
173-220-150, chapter 173-230 WAC, and WAC 173-240-080. It is included to ensure proper
operation and regular maintenance of equipment, and to ensure that adequate safeguards are
taken so that constructed facilities are used to their optimum potential in terms of pollutant
capture and treatment.

PROHIBITED DISCHARGES
Certain pollutants are prohibited from being discharged to the POTW. These include substances
which cause pass-through or interference, pollutants which may cause damage to the POTW or
harm to the POTW workers (chapter 173-216 WAC), and the discharge of designated dangerous
wastes not authorized by this permit (chapter 173-303 WAC).

DILUTION PROHIBITED
The Permittee is prohibited from diluting its effluent as a partial or complete substitute for
adequate treatment to achieve compliance with permit limitations.

SPILL PLAN
The Permittee may be storing a quantity of chemicals that have the potential to cause water
pollution if accidentally released. The Department has the authority to require the Permittee to
develop best management plans to prevent this accidental release under section 402(a)(1) of the
Federal Water Pollution Control Act (FWPCA) and RCW 90.48.080.
The Permittee has developed a plan for preventing the accidental release of pollutants to state
waters and for minimizing damages if such a spill occurs. The proposed permit requires the
Permittee to update this plan and submit it to the Department.
FACT SHEET FOR STATE WASTE DISCHARGE PERMIT ST-7384                              Page 8
TIME OIL COMPANY (J-178047526)

                    PUBLIC NOTIFICATION OF NONCOMPLIANCE

A list of all industrial users which were in significant noncompliance with Pretreatment
Standards or Requirements during any of the previous four quarters may be annually published
by the Department in a local newspaper. Accordingly, the Permittee is apprised that
noncompliance with this permit may result in publication of the noncompliance.


                    RECOMMENDATION FOR PERMIT ISSUANCE

This proposed permit meets all statutory requirements for authorizing a wastewater discharge,
including those limitations and conditions believed necessary to control toxics. The Department
proposes that the permit be issued for five (5) years.
FACT SHEET FOR STATE WASTE DISCHARGE PERMIT ST-7384                           Page 9
TIME OIL COMPANY (J-178047526)



                   REFERENCES FOR TEXT AND APPENDICES

1.   EPA Report, EPA/600/2-88/014. A selective guide for volatization technologies for water
     treatment.

2.   State Waste Discharge Permit Application submitted by Time Oil on April 25, 2000

3.   State Waste Discharge Permit Program, Chapter 173-216, May 1988.
FACT SHEET FOR STATE WASTE DISCHARGE PERMIT ST-7384                              Page 10
TIME OIL COMPANY (J-178047526)


               APPENDIX A – PUBLIC INVOLVEMENT INFORMATION

The Department has determined to reauthorize a discharge permit to the applicant listed on page
one of this fact sheet addendum. The permit contains conditions and effluent limitations that are
described in the fact sheet.

Public notice of application was published on September 6, and September 13, 2000, in The
Seattle Times to inform the public that an application had been submitted and to invite comment
on the reauthorization of this permit.

                              Water Quality Permit Coordinator
                              Department of Ecology
                              Northwest Regional Office
                              3190 - 160th Avenue SE
                              Bellevue, WA 98008-5452

Further information may be obtained from the Department by telephone at (425) 649-7201, or by
writing to the address listed above.

								
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