Alameda Point Naval Air Station
Environmental Baseline Survey
Parcels P161-P180
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BRAC1 No Evidence of Spill |
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No soil or groundwater samples were collected from this parcel during the EBS sampling program.
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BRAC2 No Cleanup Proposed |
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Soil Exposure: Motor oil (900 mg/kg max.) was found in samples collected from this parcel. A Tier 1 Risk Screen was not performed.
No groundwater samples were collected from this parcel during the EBS sampling program.
Parcel P163 Bulk Diesel Fuel Tanks
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BRAC3 No Cleanup Proposed |
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Soil Exposure: Gasoline (2.4 mg/kg max. ) is found in samples from this parcel. Petroleum products were not included in the Risk Screen.
Residential Tier 1 Risk Screen indicates acceptable cancer risk, 3.2 x 10-7 from soil exposure. Primary soil contaminant is PCBs (0.021 mg/kg max.).
No groundwater samples were collected from this parcel during the EBS sampling program.
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BRAC3 No Cleanup Proposed |
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No soil or groundwater samples were collected from this parcel during the EBS sampling program.
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BRAC3 No Cleanup Proposed |
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Soil Exposure: Diesel Fuel (30 mg/kg max.) is found in soil samples at this parcel. Petroleum products were not included in the Risk Screen.
Residential Tier 1 Risk Screen indicates acceptable cancer risk, 3.9 x 10-9 from soil exposure. Primary soil contaminant is bis(2-ethylhexyl)phthalate (0.038 mg/kg max.) and methylene chloride (0.038 mg/kg max.).
No groundwater samples were collected from this parcel during the EBS sampling program.
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BRAC3 No Cleanup Proposed |
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No soil or groundwater samples were collected from this parcel during the EBS sampling program.
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BRAC3 No Cleanup Proposed |
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Soil Exposure: Residential Tier 1 Risk Screen indicates acceptable cancer risk, 3.0 x 10-9. Primary soil contaminant is bis(2-ethylhexyl)phthalate (0.0968 mg/kg max.). An acceptable non-cancer risk, Hazard Index=0.17, was also reported. The principle compound responsible for non-cancer riskwas antimony (5.2 mg/kg max.).
No groundwater samples were collected from this parcel during the EBS sampling program.
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BRAC3 No Cleanup Proposed |
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Soil Exposure: Residential Tier 1 Risk Screen indicated an unacceptable cancer risk of 1.8 x 10-5 for soil exposure. The primary contaminants are benzo(a)pyrene (2.7 mg/kg max.) and other polynuclear aromatic hydrocarbons. Residential Tier 1 Risk Screen indicated an accepatable non-cancer risk, Hazard Index=0.492, for soil exposure. The primary contaminants are lead (72 mg/kg max.) and manganese (1,070 mg/kg max.).
Groundwater Exposure: Diesel fuel (130 µg/L in groundwater) is found in samples from this parcel. Petroleum products were not included in the Risk Screen.
Residential Tier 1 Risk Screen indicated an accepatable non-cancer risk, Hazard Index=0.2, for groundwater exposure. The primary contaminant is manganese (172 µg/L max.).
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BRAC3 No Cleanup Proposed |
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Soil Exposure: Diesel fuel (350 mg/kg in soil max.) is found in soil samples at this parcel. Petroleum products were not included in the Risk Screen.
Residential Tier 1 Risk Screen indicated an unaccepatable cancer risk of 7.3 x 10-6 for soil exposure. The primary contaminants are benzo(a)pyrene (0.064 mg/kg max.), and the pesticides chlordane (2.1 mg/kg max.), and heptachlor epoxide (0.017 mg/kg max.). Residential Tier 1 Risk Screen indicated an acceptable non-cancer risk, Hazard Index=0.772, for soil exposure. The primary contaminants are chlordane and mercury (2.1 mg/kg max.).
No groundwater samples were collected from this parcel during the EBS sampling program.
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BRAC3 No Cleanup Proposed |
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Soil Exposure: Residential Tier 1 Risk Screen indicates acceptable cancer risk, 1.4 x 10-7 from soil exposure. Primary soil contaminants are the pesticides DDT (0.095 mg/kg max.) and chlordane (0.023 mg/kg total).
No groundwater samples were collected from this parcel during the EBS sampling program.
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BRAC3 No Cleanup Proposed |
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Soil Exposure: Residential Tier 1 Risk Screen indicates acceptable cancer risk, 2.0 x 10-8 from soil exposure. Primary soil contaminants are the pesticides DDT (0.020 mg/kg max.)
No groundwater samples were collected from this parcel during the EBS sampling program.
Annex information is not currently available.
Annex information is not currently available.
Annex information is not currently available.
Annex information is not currently available.
Annex information is not currently available.
Annex information is not currently available.
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BRAC3 No Cleanup Proposed |
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Soil Exposure: Residential Tier 1 Risk Screen indicates acceptable cancer risk, 2.0 x 10-9 from soil exposure. Primary soil contaminants are the pesticides DDT (0.0026 mg/kg max.)
No groundwater samples were collected from this parcel during the EBS sampling program.
Parcel P179 George Miller Public School
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BRAC3 No Cleanup Proposed |
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Soil Exposure: Residential Tier 1 Risk Screen indicates unacceptable cancer risk, 3.5 x 10-5 from soil exposure. Primary soil contaminant is arsenic (13.9 mg/kg max.). Residential Tier 1 Risk Screen indicates unacceptable non-cancer risk, Hazard Index=1.85, from soil exposure. Primary soil contaminants are aluminum (18,500 mg/kg max.), arsenic, manganese (1,260 mg/kg max.), thallium (1.9 mg/kg max.), and vanadium (123 mg/kg max.). A subsequent Tier 2 Risk Screen indicated the following:
- Residential Risk - 2.3 x 10-6 primarily due to incidental soil ingestion and dermal contact with soil. Primary soil contaminant are benzo(a)pyrene (0.026 mg/kg max.). Arsenic was not considered as a chemical of concern during the Tier 2 Risk Screen.
- Non-cancer Risk - Hazard Index=0.96 borders on unacceptable due to manganese, thallium , and vanadium (123 mg/kg mx.). Aluminum and arsenic were not considered as chemicals of concer during the Tier 1 Risk Screen.
No groundwater samples were collected from this parcel during the EBS sampling program.
Parcel 180 Child Development Center
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BRAC3 No Cleanup Proposed |
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Soil Exposure: Residential Tier 1 Risk Screen indicated an unaccepatable cancer risk of 4.4 x 10-5 for soil exposure. The prinicple contaminants include arsenic (10.1 mg/kg max.), and beryllium (2.2 mg/kg max.) Residential Tier 1 Risk Screen indicated an unacceptable hazard index of 2.83. This value was principally due to aluminum (17,000 mg/kg max.), arsenic, manganese (2,300 mg/kg max.), nickel (130 mg/kg max.), thallium (0.96 mg/kg max.), and vanadium (81.3 mg/kg max.). A subsequent Tier 2 Risk Screen indicated the following:
- Residential Soil Cancer Risk - 2.1x 10-5 primarily due to benzo(a)pyrene and beryllium in soils.
- Residential Soil Hazard Index - 1.4. Aluminum was not included in the Tier 2 screening.
No groundwater samples were collected from this parcel during the EBS sampling program.
February 1, 1998
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