Download - Petroleum Program Update
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Petroleum Program UpdatePetroleum Program Update
Wilson DoctorWilson DoctorNavy Project ManagerNavy Project Manager
March 13, 2008March 13, 2008RAB MeetingRAB Meeting
Former NAS Moffett FieldFormer NAS Moffett FieldFormer NAS Moffett Field
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Presentation OverviewPresentation OverviewPresentation Overview
• Background
• Petroleum projects– Buildings 29 & 55 pipelines– Additional Building 29 pipelines– Building 55 sump– Site 14 South
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BackgroundBackgroundBackground
• 76 petroleum sites - closed to date
• 54 petroleum sites - in progress
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Building 29 & 55 PipelinesBuilding 29 & 55 PipelinesBuilding 29 & 55 Pipelines
• Two inactive pipelines not previously investigated
• Building 29 pipelines– Aviation gasoline– Near Hangar 1– Inactive since 1950s– 900 ft, 2-inch and 3-inch diameter, metal
• Building 55 pipeline– Boiler fuel– Near Hangars 2 & 3– Inactive since at least 1994– 1400 ft, 3-inch diameter, metal
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Building 29 & 55 PipelinesBuilding 29 & 55 PipelinesBuilding 29 & 55 Pipelines
• Collected soil samples along pipelines every 20 feet
• Fieldwork completed
• Draft report
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Building 29 & 55 PipelinesBuilding 29 & 55 PipelinesBuilding 29 & 55 Pipelines
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Additional Building 29 PipelinesAdditional Building 29 PipelinesAdditional Building 29 Pipelines
• Background– 3-inch pipeline and 8-inch pipeline
• 4,880 ft and 3,640 ft– Installed in 1930s and 1940s– Inactive since 1960s
• Sampled soil every 50 feet
• Fieldwork completed in November 2007
• Preparing draft report
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Additional Building 29 PipelinesAdditional Building 29 PipelinesAdditional Building 29 Pipelines
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Building 55 SumpBuilding 55 SumpBuilding 55 Sump
• Sump installed during the Building 55 pipeline investigation in 2005
• 10-foot deep PVC pipe
• Removed sump and collected soil samples February 2008
• Four quarters of groundwater monitoring
• Prepare draft report
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Building 55 SumpBuilding 55 SumpBuilding 55 Sump
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Site 14 South BackgroundSite 14 South BackgroundSite 14 South Background
• Fuel station
• Site covers about 1 acre
• Two 5,000-gal USTs (Tanks 19 & 20)– Removed in 1986– Contained gasoline and diesel
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Site 14 South BackgroundSite 14 South BackgroundSite 14 South Background
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Site 14 South BackgroundSite 14 South BackgroundSite 14 South Background
• Previous Investigations:
– Initial soil and groundwater (GW) assessment began 1987
– Periodic GW monitoring mid-1990s
– Site assessment activities 2003
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Site 14 South BackgroundSite 14 South BackgroundSite 14 South Background
• Previous investigations (continued):
– Chemical oxidation January 2005
– Quarterly groundwater monitoring 2005 to 2006• levels decreased initially• levels returned
• Previous investigation findings:– No free product observed at the site– Stable contaminant plume
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Site 14 SouthSite 14 SouthSite 14 South
Current investigation:
• Final Work Plan February 2008– Additional site characterization– Install seven additional groundwater monitoring wells– Four quarters groundwater sampling
• New wells and nine existing wells– Evaluate data– Potential tank testing
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Site 14 South Site 14 South Site 14 South
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SummarySummarySummary
• Moffett petroleum program ongoing
• 76 petroleum sites - closed to date
• 54 petroleum sites - in progress
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Questions?Questions?Questions?