Petroleum Program Update
Former Naval Air Station Moffett Field
November 13, 2008
RAB Meeting
Wilson Doctor
Navy Project Manager
1

Overview
• Background
• Closures
• Current Projects
• Upcoming Projects
• Summary
2

Background
• 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
3

Closure 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
4

Additional Fuel System Components at
Building 29
5

Additional Fuel System Components at
Building 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
6

USTs 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
7

ASTs 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
8

AST 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
9

ASTs 103 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
10

Current Projects
• Former Aircraft Wash Rack
• Site 5 Channel Deposit
• Building 29 and Building 55 Pipelines
• Building 55 Sump
• Site 14
11

Former 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
12

Site 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
13

Building 29 and Building 55 Pipelines
14

Building 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
15

Building 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
16

Building 55 Sump
17

Site 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
18

Site 14
19

Upcoming 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
20

Upcoming 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
21

Summary
• Moffett Field Petroleum Program
– Background
– Closures
– Current Projects
– Upcoming Projects
22