Moffett Restoration Advisory Board EPA Vapor Intrusion Update
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Transcript of Moffett Restoration Advisory Board EPA Vapor Intrusion Update
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EPA Vapor Intrusion Update
Former NAS Moffett FieldFormer NAS Moffett FieldRestoration Advisory Board Meeting
July 14, 2011
Alana LeeAlana LeeEPA Region 9
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Estimated Extent of Regional TCE Shallow Groundwater Plume
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Vapor Intrusion Study Area – Moffett Field Area and MEW Area
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MEW Area – Sampled and UnsampledCommercial Buildings
432 Unsampled Buildings40 Sampled Buildings
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Sampled Buildings – Moffett Field Area
NResidential Area
5
21 Commercial and 14 Residential Buildings
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Currently Occupied Buildings to Be Sampled by MEWMoffett Field Area
12 Buildings
23 569
12 Buildings
23 56948 583C
146 583A146 583A503 583B543 596
554 944554 944
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Currently Occupied Buildings to Be Sampled by NASA in Moffett Field Area
7 Buildings
N144 N245
7 Buildings
N212 N248
N213 T20GN213 T20G
N240
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Sampling of Unsampled Buildings –MEW and Moffett Field Area
EPA October 8 Letter to Parties (MEW, Navy, NASA)( , y, )
Draft Site-wide Indoor Air Sampling and Analysis Work Plan –December 2010December 2010
Access, Building Walk-throughs, HVAC evaluations – Feb - June 20112011
Final Work Plan & EPA Conditional Approval – June - July 2011
Sampling – July - September 2011
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Implementation of Vapor Intrusion Remedy - Process
• Sampling to Determine Response Action Tier Draft Work Plan by Sept 29, 2011
EPA St t t f W k W k R i t• EPA Statement of Work – Work RequirementsDiscussions with MEW, Navy, and NASA to conduct
the work – nearing completionthe work nearing completion
• Continued community involvement activitiesy
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For More Information
www.epa.gov/region9/mewwww.epa.gov/region9/moffettfield
Alana LeeEPA Region 9 Superfund Division415.972.3141 [email protected]