Technical Memos by 1W0mCX

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									Fairbanks Areawide Industrial Reclamation Project



        ADEC AREAWIDE
      MANAGEMENT GOALS

                  Janice Wiegers
                      ADEC
Areawide vs. Site Specific Approach
                      Sites viewed in context with
                       others, not individually
                      Data can be shared,
                       eliminating redundancy
                      Co-mingling issues more
                       easily resolved
                      Variability of scale allows
                       new information to emerge
For ADEC
   Map site locations
   Determine site status (open, closed, how much
    work is needed)
   Identify preliminary data gaps
   Identify PRPs

   Possibly involved in data collection,
    investigation, coordination, cleanup if necessary
Fairbanks Areawides
Common ADEC Requirements for
All Responsible Parties
1) Delineate nature and extent (18 AAC 75.335)
2) Evaluate risk to current and future land users
3) Protection of current & future land users
   through ICs
4) Cleanup and management plans
5) Consistent and compatible reporting for
   purposes of information dissemination

      Proactive and solution oriented
1) Delineate contamination
    Identify all possible sources and COCs
    Identify conditions that could result in ongoing
     releases (buried piping, tanks, abandoned injection
     wells, etc.)
    Delineate extent of contaminants in soil and
     groundwater (on and off-property)

          Long-term monitoring necessary to
            monitor groundwater quality
FAIR Coordinated Sampling

    Spring Sampling – 3rd week in April
    Fall Sampling – 3rd week in September
    Common benchmark for groundwater elevation

 Problems
  Shared groundwater data (EDDs)

  Shared reporting (currently handled by DEC)
    FAIR
    Coordinated
    Sampling
    General
    Results

   Product present on every site
   Dissolved Benzene/GRO at
    highest concentrations at
    southern end
   DRO/RRO throughout area
   Off-site delineation not
    complete
2) Evaluate Risk
   FAIR Risk Management Zones – Commercial/Industrial
   CSM needed for this area
       Hydrogeologic characteristics
       Contaminant location and transport characteristics
       Possible Exposure Pathways
   Are there risks to human health or the environment that
    need to be controlled or mitigated?
       Wells or dewatering activities?
       Indoor air quality problems?


             Risks should be mitigated through
                cleanup or risk management
FAIR Risk Management Plan
Risk Management Zones
3) Cleanup and Management Plan
   What are the site-specific requirements?
     Control risk
     Remove source/product
     Reduce the life of the plume and long-term
      monitoring requirements (flexible)
   Compatible with the land owner needs?
   Schedule?

     Plan should balance cleanup and
    management options with expected site
        use and cost considerations
4) Institutional Controls
    Necessary now – not later
    Better long-term management of contamination
     is priority for DEC
    IC plan should be coordinated with Railroad
      RP will continue to be responsible when utilities or
       other parties encounter contamination
      Compliance review is necessary



     If managed properly, contamination should
     NOT prevent property transactions or reuse
Construction Projects:
   Balloon Tracks
   Minnie Street Connector
   Illinois Street Widening
5) Information Management
   Must be able to articulate useful information to
    the public regarding contaminated sites
     In order to clarify potential liability considerations
     Reduce economic impacts - adjacent and future
      property use/sale/development
   Must know extent of impacts
     Plume maps
     Estimated areas of soil contamination
Summary
   Delineate
   CSM/Risk Evaluation
   IC Plan
   Cleanup and Management Plan
   Milestones
       ADEC send letter requesting CSM and explanation
       Need information on downgradient MSLUG wells (ADEC)
       Contaminated site map with addresses – provide CIMMS website
        (ADEC)
       Workplan (provide schedule or work) – May 30
            Need entry permit from railroad for drilling or sampling on railroad party
            Need letter of consent from tenants
       Off-site delineation (characterization)
       Preliminary CSM – Characterization report
            Wells, surface soil exposure, indoor air issues?
       Groundwater sampling (third week April 2005)
            Product sample from Chevron and Railroad
            Look into common lab –
            Coordinate sampling protocol (document that this will happen in the
             workplan)
            Share data for interpretation by each party
       Janice – ADEC contact
FAIR – Solvents at North End
(HIDE)

								
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