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Petroleum Program UpdateFormer Naval Air Station Moffett Field

November 13, 2008RAB Meeting

Wilson DoctorNavy Project Manager

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OverviewOverview

• Background

• Closures

• Current Projects

• Upcoming Projects

• Summary

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BackgroundBackground

• Navy removed tanks

• Water Board lead agency

• Environmental Screening Levels (ESLs)– Screening for Environmental Concerns at Sites with

Contaminated Soil and Groundwater, California Regional Water Quality Control Board San Francisco Bay Region

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Closure or NFAClosure or NFA

• Closure for petroleum underground storage tanks (USTs)

• “No Further Action” (NFA) for petroleum above-ground storage tanks (ASTs), pipelines, etc.

• Conditional upon additional information

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Additional Fuel System Components at Additional Fuel System Components at Building 29Building 29

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Additional Fuel System Components at Additional Fuel System Components at Building 29Building 29

• No Further Action letter 5/27/08

• Final ‘Additional Fuel System Components at Building 29 Completion Report and Request for Closure’ 6/26/08

• Two inactive pipelines associated with Building 29– Metal; inactive since 1960s– 8-inch diameter, 3,640 feet long– 3-inch diameter, 4,880 feet long

• Soil sampling every 50 feet

• Sampling results were below action levels

• Fieldwork completed in NOV 2007

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USTs 121 & 122USTs 121 & 122

• USTs 121 & 122 closure letter 9/2/08

• UST 121 – 250 gal., diesel, removed 1987

• UST 122 – 500 gal., gasoline, removed 1987

• Soil and groundwater sampling results presented low risk

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ASTsASTs 100, 101, 129, 132 and 133 100, 101, 129, 132 and 133

• NFA letter former ASTs 100, 101, 129, 132, and 133 dated 9/9/08

• “Phase III Basewide Tank Closure Report, No Further Action”

• Soil and groundwater sampling results below ESLs

• AST 100 – 200 gal., removed 1992, diesel

• AST 101 – 200 gal., removed unknown, diesel

• AST 129 – 18 gal., removed 1994, diesel

• AST 132 & 133 – removed 1994, 125 gal. each, hydraulic fluid

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AST 52AST 52

• Former AST 52 NFA letter 10/28/08

• “Phase III Basewide Tank Closure Report, No Further Action”

• Removed 1950s

• 25,000 gal., lubricating oil

• Soil sampling results below action levels

• Petroleum in groundwater not detected

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ASTsASTs 103 and 104103 and 104

• ASTs 103 and 104 NFA 11/4/08

• “Phase III Basewide Tank Closure Report, No Further Action”

• AST 103, removed 1994, 350 gal., diesel– No evidence of leak

• AST 104, removed 1994, 190 gal., diesel– Leak not visible– Soil samples below ESLs– Petroleum constituents not detected in groundwater

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Current ProjectsCurrent Projects

• Former Aircraft Wash Rack

• Site 5 Channel Deposit

• Building 29 and Building 55 Pipelines

• Building 55 Sump

• Site 14

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Former Aircraft Wash RackFormer Aircraft Wash Rack

• Draft “Investigation Report for Former Aircraft Wash Rack” dated 10/10/08

• Former concrete pad with drain for washing aircraft

• Soil and groundwater sampling

• Recommend NFA; sampling results show low risk

• Next step: Resolve comments

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Site 5 Channel DepositSite 5 Channel Deposit

• Draft “Site 5 Channel Deposit Investigation Report”dated 10/20/08

• Groundwater sampling of sand channel deposit

• Site 5 tanks formerly used to store fuel

• Recommend no further action for groundwater in channel deposit; low risk

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Building 29 and Building 55 PipelinesBuilding 29 and Building 55 Pipelines

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Building 29 and Building 55 PipelinesBuilding 29 and Building 55 Pipelines

• Final “Investigation and Closure Report for Building 29 and Building 55 Pipelines” dated 11/5/08

• Soil sampling along inactive pipelines

• Building 29 pipelines– Aviation gasoline– Inactive since 1950s– 900 ft, 2-inch and 3-inch diameter, metal

• Building 55 pipeline– Boiler fuel– Inactive since at least 1994– 1400 ft, 3-inch diameter, metal

• Recommend closure

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Building 55 SumpBuilding 55 Sump

• Building 55 sump

• Sump installed during the Building 55 pipeline investigation in 2005

• Work Plan FEB 2008– Removed sump, soil sampling, and groundwater

monitoring

• Preparing draft report

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Building 55 SumpBuilding 55 Sump

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Site 14Site 14

• Final Work Plan February 2008– Site characterization

– Installed 7 additional groundwater monitoring wells

– Four quarters groundwater sampling• New wells and 9 existing wells

• Complete monitoring and evaluate data

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Site 14Site 14

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Upcoming ProjectsUpcoming Projects

• Petroleum site characterization/sampling:

• Site 20 – soil and groundwater sampling

• Former Navy Exchange gas station – soil sampling

• ASTs 94, 95, 118– Removed/left in place early 90’s– 500 to 1,000 gal., gasoline– Soil and groundwater sampling

• AST 102 soil sampling– Removed 1994, 55 gal., diesel– Soil sampling

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Upcoming ProjectsUpcoming Projects

• Site 5 ‘dry wells’ soil sampling

• USTs 85 and 85A– Removed 1995– 1,000 gal., aviation gasoline– Groundwater sampling

• Tank 25A– Removed 1994, oil-water separator– Clarify site description

• UST 58– Removed 1994– 300 gal., oily water– Soil and groundwater sampling

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SummarySummary

• Moffett Field Petroleum Program

– Background

– Closures

– Current Projects

– Upcoming Projects