Former NAS Moffett Field        BRAC
                                 PMO WEST




Site 22 First Five-Year Review



     ...
Presentation Overview   BRAC
                                      PMO WEST




• Five-Year Review

• Site 22
   – Backgro...
What is a Five-Year Review?                  BRAC
                                                            PMO WEST



...
What is a Five-Year Review? (cont.)                       BRAC
                                                           ...
What is a Five-Year Review? (cont.)                       BRAC
                                                           ...
When is a Five-Year Review Required?                      BRAC
                                                           ...
Five-Year Review “Trigger”                            BRAC
                                                               ...
Site 22   BRAC
          PMO WEST




              8
Site 22 Background           BRAC
                                                      PMO WEST


•   Landfill operated f...
Site 22 Remedy                              BRAC
                                                                       PM...
Site 22 Construction   BRAC
                       PMO WEST




                           11
Site 22 Construction   BRAC
                       PMO WEST




                           12
Site 22 Ongoing Activities   BRAC
                                                  PMO WEST




•   Quarterly methane mon...
Site 22 Five-Year Review Report    BRAC
                                                  PMO WEST




•   Draft Five-Year...
Five-Year Review Issues                    BRAC
                                                                PMO WEST

...
Five-Year Review Recommendations           BRAC
                                                       PMO WEST




•   Co...
Site 22 Five-Year Review Report                     BRAC
                                                                P...
Questions?   BRAC
             PMO WEST




                 18
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Moffett Landfill Five-Year Review

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Navy presentation to the Moffett Field Restoration Advisory Board on March 13, 2008, regarding the five-year review of the landfill clean-up, required by environmental regulations.

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Moffett Landfill Five-Year Review

  1. 1. Former NAS Moffett Field BRAC PMO WEST Site 22 First Five-Year Review Wilson Doctor Navy Project Manager March 13, 2008 RAB Meeting 1
  2. 2. Presentation Overview BRAC PMO WEST • Five-Year Review • Site 22 – Background – Remedy 2
  3. 3. What is a Five-Year Review? BRAC PMO WEST • Evaluation of in-place remedy to verify that it remains protective of human health and the environment • Requirement under Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) • Navy policy is consistent with EPA guidance 3
  4. 4. What is a Five-Year Review? (cont.) BRAC PMO WEST • Five-Year Review report includes the following: – Protectiveness determination – Documentation of any deficiencies identified during the review – Recommendations for specific actions to ensure that a remedy will be or will continue to be protective • Five-Year Review process integrates decision document information and operational data of actions at the site • Evaluates implementation and performance of selected remedy 4
  5. 5. What is a Five-Year Review? (cont.) BRAC PMO WEST • Per EPA guidance, the six components of the Five-Year Review process are: – Community involvement and notification – Document review – Data review and analysis – Site inspection – Interviews – Protectiveness determination 5
  6. 6. When is a Five-Year Review Required? BRAC PMO WEST • Upon completion of remedial action, hazardous substances, pollutants, or contaminants remain above levels that allow for unlimited use and unrestricted exposure • Any Record of Decision signed on or after October 17, 1986 [effective date of Superfund Amendments and Reauthorization Act (SARA)] 6
  7. 7. Five-Year Review “Trigger” BRAC PMO WEST • Selected remedy will not allow for unlimited use and unrestricted exposure • Remedial action construction – Initiation of construction triggers the Five-Year Review clock • No remedial action construction (e.g., monitored natural attenuation, institutional controls) – Record of Decision date is trigger • First Five-Year Review completed within five years • Subsequent Five-Year reviews completed no later than five years after previous Five-Year Review reports 7
  8. 8. Site 22 BRAC PMO WEST 8
  9. 9. Site 22 Background BRAC PMO WEST • Landfill operated from 1950 through 1967 • Approximately 90,000 cubic yards domestic waste • Approximately 10 acres • Final Record of Decision June 2002 • Landfill cover construction 2003 9
  10. 10. Site 22 Remedy BRAC PMO WEST Major components of the Site 22 remedy include: • Multi-layer, engineered cover – Layers of soil, gravel, cement, and cobblestone • Groundwater monitoring (10 wells) • Landfill gas monitoring (Four perimeter wells, 15 surface locations, 13 perimeter locations) • Maintain cover integrity • Institutional controls 10
  11. 11. Site 22 Construction BRAC PMO WEST 11
  12. 12. Site 22 Construction BRAC PMO WEST 12
  13. 13. Site 22 Ongoing Activities BRAC PMO WEST • Quarterly methane monitoring • Quarterly groundwater monitoring • Regular maintenance • Quarterly landfill inspections • Annual Reports • Land surveying 13
  14. 14. Site 22 Five-Year Review Report BRAC PMO WEST • Draft Five-Year Review Report Nov. 7, 2007 • Final Five-Year Review Report Feb. 11, 2008 • EPA concurrence March 4, 2008 • Next Five-Year Review Report 2013 14
  15. 15. Five-Year Review Issues BRAC PMO WEST • No constituents above screening levels with exception of: – Chloroform in groundwater – Methane in landfill gas • Memorandum of Agreement/Institutional Controls 15
  16. 16. Five-Year Review Recommendations BRAC PMO WEST • Continue groundwater and landfill gas monitoring • Complete Memorandum of Agreement – August 2008 16
  17. 17. Site 22 Five-Year Review Report BRAC PMO WEST Protectiveness Statement • Site 22 landfill cover remedy protects human health and the environment • Implement institutional controls 17
  18. 18. Questions? BRAC PMO WEST 18

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