Alameda Point Naval Air Station
Environmental Baseline Survey

Parcels P181-P200


Parcel P181 | Parcel P182 | Parcel P183 | Parcel P184 | Parcel P185 | Parcel P186 | Parcel P187
Parcel P188 | Parcel P189 | Parcel P190 | Parcel P191 | Parcel P192 | Parcel P193 | Parcel P194
Parcel P195 | Parcel P196 | Parcel P197 | Parcel P198 | Parcel P199 | Parcel P200 | Zone Index

Parcel P181

BRAC3 No Cleanup Proposed
Soil Exposure: Residential Tier 1 Risk Screen indicates acceptable cancer risk, 3.6 x 10-9. Primary soil contaminants are the pesticides DDT (0.0065 mg/kg max.). An unacceptable non-cancer risk, Hazard Index=1.02, was also reported. The principle compounds responsible for non-cancer risk include: aluminum (14,900 mg/kg max.), lead (65.4 mg/kg max.), manganese (541 mg/kg max.), and nickel (59.2 mg/kg max.).

No groundwater samples were collected from this parcel during the EBS sampling program.


Parcel 182

BRAC6 Cleanup Required
Soil Exposure: Residential Tier 1 Risk Screen indicates an unacceptable cancer risk of 2.7 x 10-3. The prinicple contaminants include benzo(a)pyrene (130 mg/kg max.), other polynuclear aromatic hydrocarbons, and beryllium (1.5 mg/kg max.) Residential Tier 1 Risk Screen indicated an unacceptable non-cancer risk, hazard index=7.14, for soil exposure. This risk was principally due to the non-carcinogenic polynuclear aromatic hydrocarbons including pyrene and anthracene. A subsequent Tier 2 Risk Screen indicated the following:

Groundwater Exposure: Gasoline (1,300 µg/L max 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 acceptable non-cancer risk, hazard index=0.099, for groundwater exposure. Pyrene (16 µg/L max) in groundwater was largely responsible for this risk


Parcel P183

BRAC1 No Evidence of Spill
One soil gas sample was collected from this parcel during the EBS Phase 2A/2B Sampling. Soil gas samples did not contain volatile organics above a detection limit of 5 to 20 mg/m3.

No soil or groundwater samples were collected from this parcel during the EBS sampling program.


Parcel P184

BRAC3 No Cleanup Proposed
No soil or groundwater samples were collected from this parcel during the EBS sampling program.


Parcel 185

BRAC3 No Cleanup Proposed
Soil Exposure: Gasoline (1.6 mg/kg max) and Diesel Fuel (2,540 mg/kg max) are found in samples at this parcel. Petroleum products were not included in the Risk Screen.

Residential Tier 1 Risk Screen indicated an unacceptable cancer risk of 1.0 x 10-6 for soil exposure. Primary soil contaminants are benzo(a)pyrene (0.036 mg/kg max.) and PCBs (0.036 mg/kg max.). Acceptable non-cancer risk, Hazard Index=0.268, for soil exposure. Primary soil contaminant is thallium (3.1 mg/kg max.). A subsequent Tier 2 Risk Screen indicated the following:

Groundwater Exposure: Residential Tier 1 Risk Screen indicated an unacceptable cancer risk of 3.6 x 10-4 for groundwater exposure. Primary groundwater contaminant is arsenic (15.9 µg/L max.). Unacceptable non-cancer risk, Hazard Index=7.9, from groundwater exposure. Primary contaminants are aluminum (45,800 µg/L max.), arsenic, and lead (15 µg/L max.). A subsequent Tier 2 Risk Screen indicated the following:


Parcel 186

BRAC6 Cleanup Required
  • Zone Z13
  • Buildigns B194, B282
  • SWMU-B282
Soil Exposure: Residential Tier 1 Risk Screen indicated an unacceptable cancer risk of 2.1 x 10-6 for soil exposure. The primary contaminants are PCBs (0.051 mg/kg max.) and benzo(a)pyrene (0.064 mg/kg).

No groundwater samples were collected from this parcel during the EBS sampling program.


Parcel P187

BRAC3 No Cleanup Proposed
Soil Exposure: Residential Tier 1 Risk Screen indicated an acceptable non-cancer risk, Hazard Index=0.465,.for soil exposure. The primary contaminant is thallium (2.5 mg/kg).

No groundwater samples were collected from this parcel during the EBS sampling program.


Parcel P188

BRAC1 No Evidence of Spill
No soil or groundwater samples were collected from this parcel during the EBS sampling program.


Parcel 189

BRAC6 Cleanup Required
Soil Exposure: Residential Tier 1 Risk Screen indicates acceptable non-cancer risk, Hazard Index=0.003, from soil exposure. Zinc (65.4 mg/kg max. in soil) was the only chemical of conern during the Tier 1 risk screen.

No groundwater samples were collected from this parcel during the EBS sampling program.


Parcel P190

BRAC3 No Cleanup Proposed
Soil Exposure: Gasoline (2,000 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, 6.3 x 10-7 from soil exposure. Primary soil contaminant is n-nitroso di-n-propylamine (0.036 mg/kg max.). Non-cancer risk, Hazard Index=0.352, for soil exposure. Principle contaminant is thallium (1.8 mg/kg max.). A subsequent Tier 2 Risk Screen indicated the following:

Groundwater Exposure: Gasoline (130,000 µg/L max) and Diesel Fuel (5,800 µg/L max) are found in samples from this parcel. Petroleum products were not included in the Risk Screen. Residential Tier 1 Risk Screen indicates unacceptable cancer risk, 1.5 x 10-2 from groundwater exposure. Primary groundwater contaminant is benzene (5,600 µg/L max.). Non-cancer Risk, Hazard Index=543, for groundwater exposure. Principle contaminants include: benzene, 1,2-dichloroethylene (89 µg/L max), and toluene (1,600 µg/L max). A subsequent Tier 2 Risk Screen indicated the following:


Parcel P191

BRAC3 No Cleanup Proposed
  • Zone Z06
  • Building B21, B315, B320, B334, B354
  • GAP20
Soil Exposure: Residential Tier 1 Risk Screen indicates acceptable cancer risk, 9.0 x 10-9 from soil exposure. Primary soil contaminant is bis(2-ethylhexyl)phthalate (0.11 mg/kg max.). Non-cancer risk, Hazard Index=0.487, for soil exposure. Principle contaminant is thallium (3.1 mg/kg max.). A subsequent Tier 2 Risk Screen indicated the following:

Groundwater Exposure: Diesel Fuel (100 µg/L max) is found in samples from this parcel. Petroleum products were not included in the Risk Screen. Residential Tier 1 Risk Screen indicates unacceptable cancer risk, 7.7 x 10-4 from groundwater exposure. Primary groundwater contaminants are arsenic (33.8 µg/L max.) and beryllium (4.2 µg/L max.). Non-cancer Risk, Hazard Index=32, for groundwater exposure. Principle contaminants include: lead (99.8 µg/L max), aluminum (197,000 µg/L max), arsenic, manganese (4,450 µg/L max), nickel (1,210 µg/L max), and vanadium (594 µg/L max). A subsequent Tier 2 Risk Screen indicated the following:


Parcel P192

BRAC3 No Cleanup Proposed
Soil Exposure: Gasoline (3,520 mg/kg max in soil and 410 µg/L max in groundwater) and Diesel Fuel (9,920 mg/kg max in soil and 2,800 µg/L max in groundwater) is found in samples from this parcel. Petroleum products were not included in the Risk Screen. Residential Tier 1 Risk Screen indicates unacceptable cancer risk, 5.0 x 10-6 from soil exposure. Primary soil contaminant is benzo(a)pyrene (0.24 mg/kg max.) and other polynuclear aromatic hydrocarbons. Non-cancer risk, Hazard Index=0.576, for soil exposure. Principle contaminant is thallium (5.0 mg/kg max.). A subsequent Tier 2 Risk Screen indicated the following:

Groundwater Exposure: Gasoline (410 µg/L max.) and Diesel Fuel (2,800 µg/L max) are found in samples from this parcel. Petroleum products were not included in the Risk Screen. Residential Tier 1 Risk Screen indicates unacceptable cancer risk, 1.4 x 10-3 from groundwater exposure. Primary groundwater contaminants are arsenic (15.3 µg/L max.) and beryllium (17.8 µg/L max.). Non-cancer Risk, Hazard Index=109, for groundwater exposure. Principle contaminants include: lead (277 µg/L max), and aluminum (638,000 µg/L max). A subsequent Tier 2 Risk Screen indicated the following:


Parcel 193

BRAC1 No Evidence of Spill
No soil or groundwater samples were collected from this parcel during the EBS sampling program.


Parcel 194

BRAC1 No Evidence of Spill
No soil or groundwater samples were collected from this parcel during the EBS sampling program.


Parcel 195

BRAC6 Cleanup Required
  • Zone Z11
  • Buildings B40, B199, B307, B308
  • GAP24
Soil Exposure: Gasoline (3,900 mg/kg in max.) is found in samples from this parcel. Petroleum products were not included in the Risk Screen.

Residential Tier 1 Risk Screen indicated an unaccepatable cancer risk of 8.8 x 10-6 for soil exposure. The primary contaminants are beryllium (1.6 mg/kg max.) and N-nitroso di-n-propylamine (0.027 mg/kg).

Groundwater Exposure: Gasoline (60 µg/L max.) and diesel fuel (140 µg/L max.) are found in soil and groundwater samples at this parcel. Petroleum products were not included in the Risk Screen.

Residential Tier 1 Risk Screen also found an unacceptable risk of 2.1 x 10-6 for exposure to groundwater. The chlorinated solvent trichloroethylene (2.0 µg/L max.) was the primary contaminant.


Parcel P196

BRAC6 Cleanup Required
Soil Exposure: Diesel fuel (3.1 mg/kg max. in soil) is found in samples from this parcel. Petroleum products were not included in the Risk Screen.

Residential Tier 1 Risk Screen indicated an accepatable cancer risk of 3.2 x 10-9. The primary contaminants are bis(2-ethylhexyl)phthalate (0.1 mg/kg max.). Residential Tier 1 Risk Screen also found an acceptable non-cancer risk, Hazard Index=0.000. Primary soil contaminants bis(2-ethylhexyl)phthalate and diethylphthalate (0.3 mg/kg max.).

No groundwater samples were collected from this parcel during the EBS sampling program.


Parcel P197

BRAC3 No Cleanup Proposed
Soil Exposure: Residential Tier 1 Risk Screen indicates acceptable cancer risk, 8.4 x 10-7. Primary soil contaminant is benzo(a)pyrene (0.042 mg/kg max.)

No groundwater samples were collected from this parcel during the EBS sampling program.


Parcel P198

BRAC3 No Cleanup Proposed
Soil Exposure: Diesel fuel (150 mg/kg max.) was found in samples from the parcel. Petroleum products were not included in the Tier 1 Risk Screen.

Tier 1 Residential Risk Screen indicates an acceptable hazard index=0.017. This risk was associated with the presence of lead (2.2 mg/kg max.) in soils.

No groundwater samples were collected from this parcel during the EBS sampling program.


Parcel P199

BRAC3 No Cleanup Proposed
No soil or groundwater samples were collected from this parcel during the EBS sampling program.


Parcel P200

BRAC3 No Cleanup Proposed
No soil or groundwater samples were collected from this parcel during the EBS sampling program.

Parcel P1-20 | Parcel P21-40 | Parcel P41-60 | Parcel P61-80 | Parcel P81-100 | Parcel P101-20
Parcel P121-40 | Parcel P141-60 | Parcel P161-80 | Parcel P181-200 | Parcel P201-14 | Zone Index

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February 1, 1998
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