navy moffett environmental restoration program 2008 review/2009 goals
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FORMER NAS MOFFETT FIELD
Program Status8 January 2009
HISTORY
SIGNED MOAs Between - NAVY / NASABasewide transfer - Dec 1992
Summary – Navy retains cleanup obligation
Basewide Operations - August 1993Summary – Clarification of roles and responsibilities of Navy and NASA to support their own cleanup programs.
Site 1 Landfill – Nov 1999Summary – Navy has rights to O&M at the landfill. The property has restrictions. NASA can not compromise the cap.
Site 22 Landfill –September 2008Summary –Navy has rights to O&M at the landfill. The property has restrictions. NASA can not compromise the cap
Operable Units and Sites
• 6 Operable Units• 29 IRP Sites• TPH Sites• Compliance Areas
Navy Environmental Restoration Program
OU5
OU6 West-side Aquifers
OU1
Northern Channel(OU6)
East-side Aquifers
OU4
Operable Units
OU-1 – Soils at Sites 1 and 2 landfillsOU-2 – Soils at Sites 3 through 11, 13, 14,
16, 17, 18, 19OU-3 – Soils at 12 and 15OU-4 – Aquifers on the western side of
Moffett FieldOU-5 - Aquifers on the eastern side of
Moffett FieldOU-6 – Wetland areas
Active IR sites
1 – Runway Landfill (ROD 1997)22 – Golf Course Landfill (ROD 2002)25 – Eastern Dike Marsh27 – Northern Channel (ROD 2005)26 – EATS (ROD 1996)28 – WATS (MEW ROD 1989)29 – Hangar 1
Discussion TopicsConceptual strategyWork until closureAccomplished 2008 / Planned 2009
Site 1
Site 22
Site 25Site 27
Site 26
Site 28
Site 29
SITE 1 - Runway Landfill (ROD 1997)
Current statusRA complete5 Year review completed 2007Site 1 landfill is a covered landfill undergoing Long Term Monitoring (LTM)and CERCLA 5-Year Reviews
Work until closure / conceptual strategyContinue LTM
Accomplished 2008: Completed 2007 Annual Report. Conducted long-term monitoring and maintenance.
Planned 2009: Continue long-term monitoring and complete 2008 Annual Report. Site 1 will be included in the first Moffett base-wide 5-Year Review (draft due to agencies 10/1/09).
SITE 22 - Golf Course Landfill (ROD 2002)
Current statusRA complete5 Year review completed 2008. Site 22 landfill is a covered landfill undergoing LTM and CERCLA 5-Year Reviews. Annual sampling and reporting is required.
Work until closure / conceptual strategyContinue LTM
Accomplished 2008: Completed First Five-Year Review. Completed 2007 Annual Report.
Planned 2009: Continue long-term monitoring and maintenance. Site 22 will be included in the first Moffett base-wide 5-Year Review (draft due to agencies 10/1/09)
SITE 25 - EASTERN DIKED MARSH AND STORMWATER RETENTION POND
Current StatusFeasibility Study (FS) Complete 2007
Site 25 is impacted with PCBs in soil and sediment. Planned action is to excavate impacted soils and sediments
Proposed Plan for public commentPublic comment period Jan 9 to Feb 9
Work Until Closure / Conceptual strategyClose coordination with adjacent property ownersRemedial Action of approximately 60K cy. Restoration to unrestricted reuse. No ICs or LTM.Preparation of a ROD is underway. No long term maintenance is required. Prepare Remedial Design and Remedial Action plans
Accomplished 2008: Prepared proposed plan.
Planned 2009: Complete ROD and prepare Remedial Design and Remedial Action plans
SITE 27- Northern Channel (ROD 2005)
Current statusChannel was excavated to remove PCBs. Site Restoration workplan under agency review
Work Until Closure / Conceptual strategy Restoration to unrestricted reuse. No ICs or LTMConduct limited backfillComplete RACR
Accomplished 2008: Resolution of the Selenium issue. Agreement that the Navy would conduct limited backfill pursuant to the ROD. Prepared site restoration workplan
Planned 2009: Conduct limited backfill in March 2009. Memorialize agreements in RACR – Draft April; Final July 2009
Site 26 (EATS) (ROD 1996)
Current System Five extraction wells
A1-aquifer ZoneTreatment System
Air StripperCarbon Adsorption
Current StatusSystem in “standby”Groundwater is impacted with VOCs. ROD requires pump and treat to meet MCLs. Pilot Study for alternative remedy in progressDraft Work Plan under regulatory agency review.
Work Until Closure / Conceptual strategyNavy to conduct pilot study and evaluate results for alternative remedy proposal.
Accomplished 2008: Agreement to conduct pilot study for Phytorememdiationand EHC. Prepared pilot study work plan
Planned 2009: Implement Pilot Study.
Site 28 (WATS) (MEW ROD 1989)
Current StatusRemedial Action of Pump and Treat in accordance with MEW ROD.
West-side Aquifers Treatment SystemEight extraction wells
6 in A1-aquifer Zone2 in A2-aquifer Zone
Treatment SystemAdvanced OxidationAir Stripper
Work Until Closure / Conceptual StrategyParticipate in the Regional FS for a re-evaluation of the chosen remedial alternativeBldg. 88 Source area to be addressed under the Regional FS alternative
Accomplished 2008: Updated 2005 Optimization Evaluation. Participated in Regional FS workgroup meetings.
Planned 2009: Participate in the preparation of the Regional FS. Continue operation of WATS.
SITE 29 – Hangar 1
Current statusSiding and structure impacted with PCBs. Planned removal action to mitigate PCBs via siding removal and coating of structural steel
Project IssuesCoordinate the cleanup action with NASA’s reuse efforts.
Work until closure / conceptual strategyComplete removal actionPreparation of CERCLA documentation
Accomplished 2008: Completed EE/CA and Action Memorandum
Planned 2009: Conduct Removal Action. Summer 09 preconstruction activities / Fall 09 siding removal
SITE 8 - What happened to Site 8?
1981 - the tank and the sump were removed1985 - confirmation study defined extent of contamination at 81990 - RI/FS was completed1991 Final Site 8 Action Memo - no PCBs remain in soil at the site. VOCs in groundwater will be addressed as part of the regional plume remedial action.1991 – Site 8 was closed.
N
Site 8 Final Action Memorandum – Navy 1991
Petroleum Sites
Current Status36 open petroleum sites66 closed or no further action to date.Working toward UST site closure and conducting action necessaryto obtain closure.
Accomplished 2008:Navy held monthly meetings with RWQCB to advance programObtained UST closures and no further action for pipelines and ASTs
Planned 2009 and out:Continue to obtain closure or no further action of 36 open petroleum sites.
Compliance Areas
Current StatusAddress NASA identified PCB areas on facility
North Warehouse Road SwaleBuilding 45Building 525Building 583 CBuilding 951
Work Until Closure / Conceptual StrategyReview cleanup criteria of previous NASA work conducted for PCBs at the facility.Coordinate with regulatory agencies for Navy to conduct a TSCA maintenance action.
Planned 2009 and out:Coordinate with regulatory agencies for Navy to conduct a TSCA maintenance action
N. Warehouse Road Swale
Building 45
Building 525
Building 583C
Building 951
Approximate locations
N
Site 8 Final Action Memorandum – Navy 1991
Report of Findings PCBs in Site Soil - NASA November 2004
Site 8 Area identified by NASA containing PCBs (2004)
Conclusion
What Is Left to Do?7 IR sites remainSite 27 to be closed in the near future. Sites 25 and 29 working toward closure36 petroleum sites working toward closure5 compliance areas working toward closureOngoing Evaluation of revised strategies for EATS and WATSContinued Long-term Monitoring of Landfills 1 and 22
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