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