Back to Map
AIR FORCE INSTALLATION ID: CA957172450400

EDWARDS AIR FORCE BASE

edwards afb, California

Cost So Far

$506M

Money already spent on the evaluation and cleanup of hazardous sites.

Expected Additional Cost

$437M

The estimated amount of money needed for evaluation and cleanup of hazardous sites at this installation.

Expected Completion Date

2099

The date by which the DOD estimates cleanup of all sites will be complete. Long term monitoring may continue after this date.

335 Hazardous Sites

Below are the locations of hazardous sites associated with this military installation, according to the DOD. A site’s contamination may affect a much larger area, including public and private lands and the water supplies beneath them.

High Risk

Medium Risk

Low Risk

Risk Not Evaluated or Not Required

Response Complete

We haven't independently confirmed the location of every site. If you notice a site placed at the incorrect location, please contact us.

Not all sites in the DOD data include location information, so there may be sites listed below that are missing from the map. The risk level of a site refers to a relative risk assessment made by the DOD to prioritize the cleanup of sites.

83 Active Sites

Sites where military cleanup actions are still ongoing. The risk level of a site refers to a relative risk assessment made by the DOD, which prioritizes the cleanup of sites that pose greatest threat to safety, human health, and the environment.

Site ID: ST023

BLDG 3800 REMOVED UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

$15.3M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: High Risk

Contamination in the groundwater has migrated over 500 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration under the dry lake bed and then into the drinking water aquifer. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source. Connectivity exists with the South Base production wells.

Contaminants: 1,3-Dichlorobenzene 1.2 ug/L Dibromochloromethane 2.5 ug/L 1,4-Dichlorobenzene 3.6 ug/L 1,2-Dichlorobenzene 3.8 ug/L Toluene 5.0 ug/L Bromodichloromethane 6.2 ug/L Chloroform 8.7 ug/L Xylene (Mixed) 9.4 ug/L Benzene 11.0 ug/L Bis(2-Ethylhexyl)Phthalate 13.0 ug/L 1,1-Dichloroethylene 24.0 ug/L n-Propylbenzene 28.0 ug/L sec-Butylbenzene 34.0 ug/L iso-Propylbenzene 35.0 ug/L 1,3,5-Trimethylbenzene 53.0 ug/L Naphthalene 68.0 ug/L 1,2,4-Trimethylbenzene 120.0 ug/L Trichloroethylene (TCE) 140.0 ug/L Tetrachloroethylene 180.0 ug/L 1,2-Dichloroethylene (cis) 180.0 ug/L

See more details...

Site ID: SD051

PAD 4 DISPOSAL AREA

Surface Disposal Area

Cost

$8M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: High Risk

Contamination in the groundwater has migrated over 300 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration into the drinking water aquifer. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source. Connectivity exists with the South Base production wells.

Contaminants: cis-1,2-Dichloroethylene 1.0 ug/L Tetrachloroethylene 5.5 ug/L Xylene (Mixed) 6.2 ug/L Lead 7.6 ug/L Toluene 8.3 ug/L Copper and compounds 80.0 ug/L Trichloroethylene (TCE) 120.0 ug/L Zinc 220.0 ug/L Iron 33800.0 ug/L

See more details...

Site ID: ST024

PET BLDGS 3804 AND 3807 REMOVED UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

$199K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jul 2016

Contaminated Areas

Groundwater: High Risk

Contamination in the groundwater has migrated over 300 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migrating under the dry lake bed and then into the drinking water aquifer. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source. Connectivity exists with the South Base production wells.

Contaminants: Arsenic 12.0 ug/L Benzyl Alcohol 20.0 ug/L Anthracene 20.0 ug/L Benzo(b)Fluoranthene 21.0 ug/L Chrysene 26.0 ug/L 2-Methylphenol (o-Cresol) 32.0 ug/L Trichloroethylene (TCE) 43.0 ug/L Methylene Chloride 50.0 ug/L Pyrene 73.0 ug/L Fluoranthene 75.0 ug/L cis-1,2-Dichloroethylene 92.0 ug/L Cumene 110.0 ug/L Manganese and compounds 120.0 ug/L Nickel (soluble salts) 160.0 ug/L 1,3,5-Trimethylbenzene 230.0 ug/L Chromium 390.0 ug/L Naphthalene 520.0 ug/L 1,2,4-Trimethylbenzene 800.0 ug/L Ethyl benzene 1500.0 ug/L Aluminum 1900.0 ug/L Benzene 3200.0 ug/L Iron 3500.0 ug/L Xylene (Mixed) 5900.0 ug/L Toluene 7600.0 ug/L

See more details...

Site ID: ST066

BLDG 1899 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

$15.3M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: High Risk

Contamination in the groundwater has migrated over 300 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration under the dry lake bed and then into the drinking water aquifer. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source. Connectivity exists with the South Base production wells.

Contaminants: Ethylene Dibromide 0.02 ug/L 1,1,1-Trichloroethane 1.2 ug/L 1,2-Dichloroethane (EDC) 1.8 ug/L Methylene Chloride 3.5 ug/L Diethyl Phthalate 5.0 ug/L sec-Butylbenzene 6.1 ug/L 1,1-Dichloroethylene 9.6 ug/L Bis(2-Ethylhexyl)Phthalate 11.0 ug/L Dimethyl Phthalate 20.0 ug/L 1,3,5-Trimethylbenzene 31.0 ug/L Cumene 31.0 ug/L cis-1,2-Dichloroethylene 33.0 ug/L 1,1-Dichloroethane 40.0 ug/L 1,2,4-Trimethylbenzene 100.0 ug/L Ethyl benzene 410.0 ug/L Trichloroethylene (TCE) 490.0 ug/L Naphthalene 620.0 ug/L Toluene 2200.0 ug/L Benzene 2400.0 ug/L Xylene (Mixed) 2720.0 ug/L

See more details...

Site ID: WP285

BLDG. 4241, WASTE SUMP

Surface Disposal Area

Cost

$10.2M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2021

This site is under ongoing monitoring until Sep 2028

Contaminated Areas

Groundwater: Medium Risk

The contamination is in the groundwater beneath the site, there is a potential connection to drinking water aquifer. Since the State of california considers all groundwater to be a source for domestic and agricultural purposes, there is a risk to human health.

Contaminants: Arsenic 190.0 ug/L

Soil: Medium Risk

Potential exists for the perchlorate to migrate to the groundwater. Potential exists for the constructrion workers exposed to the contaminated soil.

Contaminants: Arsenic 0.10934 mg/kg

See more details...

Site ID: DP058

PAD 19 DISPOSAL AREA

Disposal Pit and Dry Well

Cost

$16.5M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: Medium Risk

While contamination in the groundwater has migrated beyond the edge of the source further migration is unlikely. The plume is at the low point of the lake bed and there is no gradient to move the plume any further. Contamination is not expected to impact a beneficial source within five years. There is no threat to any existing drinking water well. California EPA considers all groundwater to be a potential domestic or agricultural source.

Contaminants: Zinc 210.0 ug/L cis-1,2-Dichloroethylene 290.0 ug/L Barium 580.0 ug/L Ethyl benzene 640.0 ug/L Manganese and compounds 870.0 ug/L Molybdenum 1300.0 ug/L Toluene 1400.0 ug/L Xylene (Mixed) 3200.0 ug/L Trichloroethylene (TCE) 3400.0 ug/L Benzene 4400.0 ug/L Aluminum 37300.0 ug/L Iron 61900.0 ug/L

Soil: Low Risk

Soil contamination is limited. No significant contaminants exist in the surface soils. There are no significant contamints to be exposed to.

Contaminants: Silver and compounds 0.001 mg/kg Selenium 0.001 mg/kg Antimony and compounds 0.0085 mg/kg Molybdenum 0.0088 mg/kg Copper and compounds 0.0394 mg/kg Aluminum 29.7 mg/kg

See more details...

Site ID: SD019

BLDG 1928 AND ROCKET PLANE PREPARATION AREA

Surface Disposal Area

Cost

$15.3M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: Medium Risk

Contamination in the groundwater has migrated beyond the edge of the source, however migration has essentially ceased. The potential of migrating under the dry lake bed and then into the drinking water aquifer is limited. Contamination is not expected to impact a beneficial source. The potential of migrating under the dry lake bed and then into the drinking water aquifer is limited. The nearest well field is 6 miles away crossgradient.

Contaminants: Trichloroethylene (TCE) 32000.0 ug/L

Soil: Low Risk

Contaminants are likely representative of dissolved contaminants in the groundwater. Concentrations are low enough to have limited receptor factors.

Contaminants: Benzene 3.0e-05 mg/kg Trichloroethylene (TCE) 4.0e-05 mg/kg Toluene 0.00024 mg/kg

See more details...

Site ID: AL504

7TH ARMY AIR FORCE BOMBING AND GUNNERY RANGE (TARG

Air to Land

Cost

$1.41M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

This site is under ongoing monitoring until Sep 2050

Site ID: AL505-5

OFF BASE ADJACENT AREA 5

Air to Land

Cost

$1.04M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

This site is under ongoing monitoring until Sep 2050

Contaminated Areas

Soil: Low Risk

Contaminants: Chromium (VI) 0.014 mg/kg

See more details...

Site ID: WP177

TEST AREA 1-30 WASTE COLLECTION TANKS AND LEACH FI

Disposal Pit and Dry Well

Cost

$4.6M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2022

Contaminated Areas

Groundwater: Medium Risk

Contamination has been observed in downgradient monitoring wells located more than 100 feet from the source area. There are no threatened water supply wells; modeling has shown contamination will not reach the wells for >500 yrs. Concentrations of arsenic are below background levels, but above drinking water standards. Groundwater is of limited beneficial use.

Contaminants: Carbon tetrachloride 1.2 ug/L Toluene 1.7 ug/L Chloroform 3.5 ug/L 1,2-Dichloroethane (EDC) 16.0 ug/L 1,2-Dichloroethylene (cis) 130.0 ug/L Trichloroethylene (TCE) 680.0 ug/L Tetrachloroethylene 790.0 ug/L

See more details...

Site ID: AL505-4

OFF BASE ADJACENT AREA 4 (CENTRAL)

Air to Land

Cost

$1.41M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

This site is under ongoing monitoring until Sep 2050

Contaminated Areas

Soil: Low Risk

Contaminants: Chromium (VI) 0.014 mg/kg

See more details...

Site ID: SD162

TEST AREA 1-40 FORMER CATCH TANKS

Chemical Disposal

Cost

$7.11M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2017

This site is under ongoing monitoring until Sep 2099

Contaminated Areas

Groundwater: Medium Risk

Contaminants have been observed in downgradient wells greater than 100 feet beyond the source. It is not known at this time whether the drinking water aquifer beneath the communitiy of Boron will be impacted within five years.

Contaminants: Chloroform 1.3 ug/L 1,2-Dichloroethane (EDC) 2.6 ug/L Carbon tetrachloride 3.5 ug/L Bis(2-Ethylhexyl)Phthalate 15.0 ug/L Trichloroethylene (TCE) 180.0 ug/L Tetrachloroethylene 2200.0 ug/L

Soil: Low Risk

Contaminants were not detected in concentrations which pose a significant health threat.

Contaminants: Acetone 1.3e-05 mg/kg

See more details...

Site ID: LF325

TEST AREA 1-90 FORMER TEST STANDS 1-91 & 2-92, FOR

Landfill

Cost

$4.55M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2019

Contaminated Areas

Soil: Medium Risk

Contaminants exist in concentrations sufficient for downward migration. Note that the constituent 1,3-xylene is a substitute contaminant for TPH which is not included as a Relative Risk Contaminant but is mandated by California Law. Receptors may be exposed during excavation activities or if contamination migrates into groundwater.

Contaminants: 1,3-Xylene 3.14 mg/kg

See more details...

Site ID: SS461

TEST STAND 1A, TEST AREA 1-120

Spill Site Area

Cost

$10.7M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Dec 2017

Contaminated Areas

Groundwater: Medium Risk

Contaminated groundwater can be seen seeping out of rock formation below the test stand. Groundwater wells greater than 100 feet from source have been impacted with similar contaminants. There are no threatened water supply wells; modeling has shown contamination will not reach the wells for >500 yrs. Concentrations of arsenic are below background levels, but above drinking water standards. Groundwater is of limited beneficial use.

Contaminants: Trichloroethylene (TCE) 4300.0 ug/L

Sediment (Fresh): Low Risk

Contamination is at a point of exposure.

Contaminants: cis-1,2-Dichloroethylene 4.6e-06 mg/kg Trichloroethylene (TCE) 8.6e-06 mg/kg

Sediment (Human): Low Risk

Contamination is at a point of exposure. Workers from Test Stand 1-A have direct access to contaminated sediments at the base of the test stand.

Contaminants: cis-1,2-Dichloroethylene 4.6e-06 mg/kg Trichloroethylene (TCE) 8.6e-06 mg/kg

See more details...

Site ID: ST025

BLDG 4949 EXOTIC FUEL STORAGE AREA

Underground Storage Tanks

Cost

$43.8M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 2020

Contaminated Areas

Groundwater: Medium Risk

Contamination in groundwater has migrated over 100 feet beyond the source. However, a leading edge pump and treat containment system implemented as an IRA in November 2001 is successfully preventing further migration of the plume leading edge. Groundwater contamination has not impacted a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Vinyl Chloride 2.4 ug/L N-Nitrosodimethylamine 5.09 ug/L 1,4-Dioxane 5.42 ug/L Tetrachloroethylene 330.0 ug/L Trichloroethylene (TCE) 210000.0 ug/L

See more details...

Site ID: ST016

BLDG 1820 JP-4 FUEL SPILL

Underground Storage Tanks

Cost

$15.3M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: Medium Risk

Due to groundwater pumping from the treatment system, contaminants in the groundwater have little potential to migrate downgradient of the source. Contamination is not expected to impact a beneficial source or production well within five years. Cal EPA considers all groundwater to be a potential domestic or agricultural source.

Contaminants: 1,1-Dichloroethane 15.0 ug/L Naphthalene 210.0 ug/L o-Xylene 920.0 ug/L Toluene 1400.0 ug/L 1,2-Dichloroethylene (cis) 2600.0 ug/L Benzene 9300.0 ug/L Trichloroethylene (TCE) 96000.0 ug/L

Soil: Medium Risk

Surface soil contamination may migrate to a point of exposure. If contamination reaches the bare topsoil, it would be exposed to frequent high winds resulting in the inhalation of contaminated fugitive dust by receptors. Potential exposure to off-site workers, 487 on-site workers, and future construction workers consists of soil contact and inhalation of fugitive dust and VOCs. Ecological receptors include plants, and primary and secondary mammalian consumers.

Contaminants: Methylene Chloride 1.3e-05 mg/kg Beryllium and compounds 0.00051 mg/kg Cadmium and compounds 0.00063 mg/kg Benzene 0.005 mg/kg Lead 0.0051 mg/kg Arsenic 0.0228 mg/kg Barium 0.599 mg/kg Manganese and compounds 10.6 mg/kg Aluminum 18.7 mg/kg

See more details...

Site ID: SS242

BLDG 4505 FORMER LEAKING TRANSFORMER

Spill Site Area

Cost

$1.15M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2020

Contaminated Areas

Soil: Medium Risk

PCB and Dioxin impacts to soil are limited to the upper 2.5 feet, with the deepest impact occuring in the immediate vicinity of the transformer pad (inside perimeter fence). Outside the perimeter fence, PCB and Dioxin impacts are limited to the surface. S There is a potential for Civil Engineering maintenance crews to be exposed to contaminated soil while working in and around the former transformer location.

Contaminants: Dioxin (2,3,7,8-TCDD) 2.48e-05 mg/kg PCBs 0.05 mg/kg

See more details...

Site ID: AL505-2

OFF BASE ADJACENT AREA 2 (CENTRAL)

Air to Land

Cost

$1.41M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

This site is under ongoing monitoring until Sep 2050

Site ID: LF029

SOUTH BASE ABANDONED SANITARY LANDFILL

Landfill

Cost

$342K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jan 2018

Contaminated Areas

Soil: Medium Risk

Potential contaminants near the surface can migrate via airborne soils or via the movement of moisture through the landfill. The landfill is adjacent to an access road to the former base sewage plant and effluent evaporation ponds. The access road is occasionally traveled by base personnel. There are no direct means for receptors to have access to surface soil contamination.

Contaminants: Beryllium and compounds 0.0017 mg/kg Molybdenum 0.0083 mg/kg Antimony and compounds 0.0109 mg/kg Cadmium and compounds 0.0186 mg/kg Arsenic 0.0325 mg/kg Chromium 0.0412 mg/kg Silver and compounds 0.0497 mg/kg Copper and compounds 0.113 mg/kg Vanadium 0.117 mg/kg Zinc 0.341 mg/kg Barium 0.394 mg/kg Lead 0.784 mg/kg Aluminum 48.1 mg/kg Iron 146.0 mg/kg

Groundwater: Low Risk

No groundwater contamination

Contaminants: Trichloroethylene (TCE) 0.0 ug/L

See more details...

Site ID: SS231

BLDG 4317 BATTERY WASTE AREA

Spill Site Area

Cost

$6.62M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2021

Contaminated Areas

Groundwater: Medium Risk

Currently, information is not available to support an MPF of evident or confined. Further sampling is necessary to assess the extent of organic contaminants and to further characterize the organic compounds present. There is no threatened water supply well down gradient from the source and the groundwater is potentially usable for drinking water, irrigation, or agriculture.

Contaminants: Benzene 1.2 ug/L 1,2-Dichloroethane (EDC) 49.0 ug/L

Soil: Low Risk

There is no surface soil contamination

Contaminants: Zinc 0.159 mg/kg

See more details...

Site ID: WP115

TEST AREA 1-100 SILO NO. 2 (OPEN), AND FORMER LEAC

Surface Disposal Area

Cost

$5.24M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2019

Contaminated Areas

Groundwater: Low Risk

Contamination in the groundwater has migrated over 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration into the drinking water aquifer. Groundwater contamination has not yet impacted a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Trichloroethylene (TCE) 21.0 ug/L

See more details...

Site ID: SD044

BLDG. 1210 RELEASE SITE

Surface Disposal Area

Cost

$7.44M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: Low Risk

Contamination in the groundwater has migrated over 1,200 feet beyond the edge of the source and there are no known barriers to contaminant migration. Groundwater contamination will not impact a production well or other drinking water sources.

Contaminants: 1,3,5-Trimethylbenzene 1.2 ug/L Tetrachloroethylene 2.7 ug/L 1,2,4-Trimethylbenzene 3.6 ug/L Benzene 4.2 ug/L Toluene 19.0 ug/L Xylene (Mixed) 22.0 ug/L Trichloroethylene (TCE) 60.0 ug/L

See more details...

Site ID: LF003

MAIN BASE INACTIVE SANITARY LANDFILL

Landfill

Cost

$2.07M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 2017

This site is under ongoing monitoring until Sep 2099

Contaminated Areas

Groundwater: Low Risk

The landfill is unlined, contamination has impacted groundwater. Contaminants have migrated downward toward groundwater or moved upward as gas. Volatile organic compounds, halogenated volatiles, pesticides, and metals are present in the groundwater above This aquifer is located within the Lancaster Groundwater Basin. California EPA considers all groundwater to be a potential domestic or agricultural source.

Contaminants: Heptachlor 0.27 ug/L Mercury (Methyl) 2.5 ug/L 1,1-Dichloroethylene 5.2 ug/L Benzene 5.8 ug/L Vinyl Chloride 13.0 ug/L Perchloroethylene (PCE) 21.0 ug/L Trichloroethylene (TCE) 25.0 ug/L Methylene Chloride 220.0 ug/L

Soil: Low Risk

Semivolatile organic compounds (SVOCs) and lead concentrations exceeding USEPA residential Preliminary Remediation Goals (PRGs) were detected in the near surface soil. Lead also exceeded background concentration. Low concentrations of unknown extractable Recreational horse stables used by base personnel are located 800 feet southwest of the Site. Main Base housing area is located approximately 1,500 feet south of the inactive landfill.

Contaminants: Benzo(a)Pyrene 0.0006 mg/kg Benz(a)Anthracene 0.00096 mg/kg Lead 0.194 mg/kg

See more details...

Site ID: ST241

PET SITE 241 BLDG 4505 HANGAR AND NW WING UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

$8.89M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2021

Contaminated Areas

Groundwater: Low Risk

There is very little potential for migration because: groundwater is very deep, there is no hydraulic gradient, there is no continuing source of contamination, and modelling indicates it would take at least 100 years for contamination to reach any wells. There are no threatened water supply wells downgradient from the source, but the groundwater is potentially usable for drinking water, irrigation, or agriculture.

Contaminants: Benzene 130.0 ug/L

Soil: Low Risk

There is no evidence of movement from the unconconfined source. Civil Engineering maintenance crews and hangar personnel have a possibility of coming into either skin and inhalation contact with the fuel hydrocarbon contamination.

Contaminants: Benzene 0.0 mg/kg

See more details...

Site ID: SD178

TEST AREA 1-32 LARGE MOTOR EXHAUST AREA

Surface Disposal Area

Cost

$3.13M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 2018

This site is under ongoing monitoring until Sep 2099

Contaminated Areas

Soil: Low Risk

Limited site assessment activities have been performed. Additional assessment activities are believed to reveal more extensive contamination at the site.

Contaminants: 1,2-Dichloroethane (EDC) 3.0e-05 mg/kg

See more details...

Site ID: SS267

EAST CAMP RIFLE RANGE

Small Arms Range

Cost

$2.31M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2021

Contaminated Areas

Soil: Low Risk

The berm's lead bullet/material contaminated soil has a potential pathway through both the subsurface (leading to the groundwater) and exists on the surface of the terrain. Eleven bullets per cubic foot of soil found in one sample. Humans rarely frequent the site. The potential for inhalation of contaminated fugitive dust emissions during frequent high wind conditions exists.

Contaminants: Lead 0.052 mg/kg

See more details...

Site ID: ST299

BLDG 2450 WASTE OIL DISPOSAL SINK AND REMOVED

Underground Storage Tanks

Cost

$5.22M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2021

Contaminated Areas

Groundwater: Low Risk

Although contamination has migrated more than 100 feet from the source, further migration is limited due to downgradient treatment systems at OU1 Contamination will never reach any receptors due to geology and downgradient treatment systems at OU1.

Contaminants: Benzene 9.0 ug/L cis-1,2-Dichloroethylene 19.0 ug/L Tetrachloroethylene 59.0 ug/L Trichloroethylene (TCE) 370.0 ug/L

Soil: Low Risk

There are no known barriers to suface soil contaminant migration. Contaminated soil may be transported by frequent high winds. The site is currently vacant land. Future construction workers may potentially be exposed to contaminated soil or contaminated dust in the air from Site 299.

Contaminants: Lead 0.396 mg/kg

See more details...

Site ID: ST333

TEST AREA 1-46 CATCH TANKS

Sewage Treatment Plant

Cost

$5.5M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jan 2019

Contaminated Areas

Soil: Low Risk

Potential contaminants may be a source of exposure for airborne contamination as well as penetrating into groundwater. Note that the constituent 1,3-xylene is a substitute contaminant for TPH which is not included as a RR list contaminant but is mandated Potential contaminants may be a source of exposure for workers

Contaminants: 1,3-Xylene 0.21 mg/kg

See more details...

Site ID: SS422

BLDG E-32 LEACHFIELD

Leach Field

Cost

$3.72M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2021

Contaminated Areas

Groundwater: Low Risk

Currently, information is not available to support an MPF of evident or confined. Further sampling is necessary to further delinieate the downgradient extent of the TCE amd perchlorate groundwater plumes. There is no threatened water supply well down gradient from the source and the groundwater is potentially usable for drinking water, irrigation, or agriculture.

Contaminants: Perchlorate 5.0 ug/L cis-1,2-Dichloroethylene 11.0 ug/L Trichloroethylene (TCE) 23.0 ug/L

See more details...

Site ID: SS269

EAST CAMP MOVING TARGET MACHINE GUN RANGE

Small Arms Range

Cost

$3.51M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2021

Contaminated Areas

Soil: Low Risk

Lead bullets are concentrated in the upper 1.5 feet of soil in the berms. TCLP and synthetic leaching potential indicate lead is unlikely to migrate below 5 feet bgs (Site 294 & 296 data). Six bullets per cubic foot of soil was found in one sample collect Humans rarely frequent the site. The potential for inhalation of contaminated fugitive dust emissions during frequent high wind conditions exists.

Contaminants: Lead 0.963 mg/kg

See more details...

Site ID: WP125

TEST AREA 1-42 OXIDATION PONDS AND BURN PIT

Burn Area

Cost

$10.7M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jan 2019

Contaminated Areas

Surface Water: Low Risk

Surface water is contained in bermed areas. A full time individual from RKO occupies the site during working hours but is not expected to contact the surface water.

Contaminants: Dibromochloromethane 1.6 ug/L Chloroform 1.6 ug/L Bromodichloromethane 2.0 ug/L Tetrachloroethylene 2.1 ug/L

Surface Water (Fresh): Low Risk

Surface water is contained in bermed areas. A full time individual from RKO occupies the site during working hours but is not expected to contact surface water.

Contaminants: Dibromochloromethane 1.6 ug/L Chloroform 1.6 ug/L Bromodichloromethane 2.0 ug/L Tetrachloroethylene 2.1 ug/L

See more details...

Site ID: SS278

NORTH BASE MISCELLANEOUS, FORMER LEAKING TRANSFORM

Spill Site Area

Cost

$155K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 2022

Contaminated Areas

Soil: Low Risk

A soil sample was collected 6 inches below the surface within the stained soils adjacent to the concrete slab and analyzed for TPH and PCB. A concrete grab sample of the stained pad was submitted for PCB analysis. The soil sample TPH concentration was rep Connectivity exists between the groundwater in OU-10 and the base drinking water wells located in the North Base area.

Contaminants: PCB 0.0009 mg/kg

See more details...

Site ID: SD257

BLDG 4976 PHOTOCHEMICAL DISCHARGE AREA

Storm Drain

Cost

$4.1M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Soil: Low Risk

Soil contaminants are not mobile and cannot migrate to groundwater Contamination is below where any regular activity would result in exposure. Site controls prevent exposure without PPE

Contaminants: Silver and compounds 5.139 mg/kg

See more details...

Site ID: AL501A

PISTOL RANGE

Air to Land

Cost

$1.04M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 2020

This site is under ongoing monitoring until Sep 2050

Contaminated Areas

Soil: Low Risk

Contaminants: Lead 0.034 mg/kg

See more details...

Site ID: SS300

BLDG 3500 COMMON YARD AND PAINT STAINS

Spill Site Area

Cost

$1.28M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2021

Contaminated Areas

Soil: Low Risk

Contamination is not on the surface so inhalation is not a factor Receptor access to the site is limited.

Contaminants: Trichloroethylene (TCE) 0.082 mg/kg

See more details...

Site ID: DP240

BLDG 4505 FORMER SUMP, FORMER LEACH FIELD & COOLAN

Leach Field

Cost

$8.89M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2021

Contaminated Areas

Groundwater: Low Risk

Additional groundwater monitoring wells are required to determine whether migration greater than 100 feet from the source has occurred. Contaminated groundwater has a potential to migrate towards North Base drinking water wells.

Contaminants: Tetrachloroethylene 0.4 ug/L Carbon tetrachloride 4.8 ug/L Chloroform 5.4 ug/L

Soil: Low Risk

Surface soil contamination can migrate to a point of exposure. Contamination in the bare topsoil is exposed to frequent high winds resulting in the inhalation of contaminated fugitive dust by receptors. There is no direct means for receptors to have access to surface soil contamination, however potential receptors are currently being evaluated..

Contaminants: Carbon tetrachloride 0.023 mg/kg

See more details...

Site ID: SS301

BLDG 3500 PAINT SHOP ACCUMULATION POINT

Spill Site Area

Cost

$14.7M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: Low Risk

Although contamination has migrated more than 100 feet from the source, further migration is limited due to downgradient treatment systems at OU1 Contamination will never reach any receptors due to geology and downgradient treatment systems at OU1.

Contaminants: cis-1,2-Dichloroethylene 12.0 ug/L 1,2-Dichloroethane (EDC) 40.0 ug/L Toluene 41.0 ug/L Naphthalene 65.0 ug/L Trichloroethylene (TCE) 130.0 ug/L Xylene (Mixed) 550.0 ug/L 1,2,4-Trimethylbenzene 620.0 ug/L Ethyl benzene 650.0 ug/L Benzene 1200.0 ug/L

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.042 mg/kg

See more details...

Site ID: ST017

BLDGS 1425 AND 1600 REMOVED UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

$8.08M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: Low Risk

The Soil Vapor Extraction remediation system that is currently operating at the site will ensure that the contaminants in the groundwater have little potential to migrate downgradient of the source. The groundwater contamination is not expected to impact a benificial source.

Contaminants: 1,2-Dichloroethylene (cis) 6.3 ug/L 1,2-Dichloroethane (EDC) 18.0 ug/L Trichloroethylene (TCE) 55.0 ug/L Benzene 100.0 ug/L Ethyl benzene 440.0 ug/L

See more details...

Site ID: ST018

BLDGS 1864, 1870, 1874, AND 1881 HANGAR AREA REMOV

Underground Storage Tanks

Cost

$16.7M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: Low Risk

Source control provided by the existing DES system eliminates any potential further migration of plume. Source control and institutional controls eliminate potential recepter impacts.

Contaminants: Toluene 96.0 ug/L Benzene 260.0 ug/L 1,2-Dichloroethane (EDC) 440.0 ug/L Xylene (Mixed) 810.0 ug/L Trichloroethylene (TCE) 16000.0 ug/L

See more details...

Site ID: DP275

NORTH BASE MISCELLANEOUS, DUMP SITE

Disposal Pit and Dry Well

Cost

$4.39M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2020

This site is under ongoing monitoring until Sep 2099

Contaminated Areas

Soil: Low Risk

Surface soil contamination can migrate to a point of exposure to due poor containment of soils. Site is located in a remote area inhabited by wildlife.

Contaminants: Cadmium and compounds 0.01 mg/kg Lead 0.2222 mg/kg

See more details...

Site ID: ST063

OU8 SITE 63 PET, JP-4 PIPELINE, INITIAL MILE OF PI

Underground Storage Tanks

Cost

$953K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Nov 2016

This site is under ongoing monitoring until Sep 2028

Contaminated Areas

Groundwater: Low Risk

Although contamination has migrated more than 100 feet from the source, further migration is limited due to downgradient treatment systems at OU1 Contamination will never reach any receptors due to geology and downgradient treatment systems at OU1.

Contaminants: Benzene 9500.0 ug/L

Soil: Low Risk

There is relatively minor soil contamination in a couple of areas where the pipeline leaked, however, the contamination is located 56 inches under the ground surface. There is no expected future receptor access to soil contamination.

Contaminants: Benzene 0.054 mg/kg

See more details...

Site ID: WP116

TEST AREA 1-36 TEST PAD A EXHAUST AREA & OXIDATION

Surface Runoff

Cost

$4.94M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2019

Contaminated Areas

Groundwater: Low Risk

Contamination in the groundwater has migrated over 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration into the drinking water aquifer. Groundwater contamination has not yet impacted a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Trichloroethylene (TCE) 1.9 ug/L

See more details...

Site ID: DP280

NORTHWEST AREA DRUM STORAGE SITE

Disposal Pit and Dry Well

Cost

$641K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2019

Contaminated Areas

Soil: Low Risk

The areas where the drums are located contain potential pathways through both the subsurface (leading to the groundwater) and on the surface of the terrain. No detected concentrations of TPH, or volatile or semi-volatile organics in soil samples. Off-base housing development within several hundred feet of site. There is the potential for the inhalation of contaminated fugitive dust emissions during periods of frequent high winds.

Contaminants: Benzo(a)Pyrene 0.001 mg/kg

See more details...

Site ID: SS061

BLDG 4916 FORMER HAZARDOUS WASTE ACCUMULATION AREA

Spill Site Area

Cost

$6.46M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2020

Contaminated Areas

Groundwater: Low Risk

Although contamination has migrated more than 100 feet from the source, further migration is limited due to downgradient treatment systems at OU1 Contamination will never reach any receptors due to geology and downgradient treatment systems at OU1.

Contaminants: Xylene (Mixed) 3.1 ug/L 1,1-Dichloroethylene 4.4 ug/L Toluene 9.5 ug/L Benzene 17.0 ug/L 1,1-Dichloroethane 17.0 ug/L cis-1,2-Dichloroethylene 24.0 ug/L Perchloroethylene (PCE) 29.0 ug/L Chloroform 51.0 ug/L Trichloroethylene (TCE) 1600.0 ug/L

See more details...

Site ID: WP318

TEST AREA 1-120 CATCH BASIN AND EVAPORATION POND

Surface Disposal Area

Cost

$4.64M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2019

Contaminated Areas

Soil: Low Risk

Limited site assessment activities have been performed. Additional assessment activities are believed to reveal more extensive contamination at the site. Potential receptors are currently being evaluated.

Contaminants: Xylene (Mixed) 6.6e-06 mg/kg Tetrachloroethylene 1.9e-05 mg/kg Toluene 2.7e-05 mg/kg Naphthalene 0.00054 mg/kg Benzo(a)Pyrene 0.00091 mg/kg Chrysene 0.0015 mg/kg Benzo(b)Fluoranthene 0.0016 mg/kg Fluoranthene 0.0027 mg/kg Pyrene 0.0028 mg/kg

See more details...

Site ID: ST005

SOUTH BASE WASTE POL STORAGE AREA

Underground Storage Tanks

Cost

$7.1M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2017

Contaminated Areas

Groundwater: Low Risk

Installed groundwater and vadose zone treatment system confines contaminants. Installed groundwater and vadose zone treatment system controls exposure to potential receptors.

Contaminants: 1,1-Dichloroethylene 1.2 ug/L 4-Methylphenol (p-Cresol) 18.0 ug/L 1,2-Dichloroethane (EDC) 20.0 ug/L Cumene 190.0 ug/L 1,1,1-Trichloroethane 250.0 ug/L Ethylene Dibromide 360.0 ug/L 1,3,5-Trimethylbenzene 430.0 ug/L Naphthalene 1400.0 ug/L Methylene Chloride 2300.0 ug/L Trichloroethylene (TCE) 2500.0 ug/L 1,2,4-Trimethylbenzene 3300.0 ug/L Xylene (Mixed) 6100.0 ug/L Benzene 6500.0 ug/L Toluene 8700.0 ug/L

See more details...

Site ID: LF339

PIUTE PONDS LANDFILL

Landfill

Cost

$9.52M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jul 2020

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Furan is not soluble in water so there is no potential for migration to groundwater. Arsenic concentations are below background. Groundwater is not impacted Potential receptors include populations of numerous waterfowl in the area, and animals throughout the region are attracted to this abundant source of water.

Contaminants: Furan 0.0106 mg/kg

See more details...

Site ID: WP027

TEST AREA 1-56 DELUGE DISCHARGE SYSTEM

Disposal Pit and Dry Well

Cost

$5.36M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jan 2019

Contaminated Areas

Groundwater: Low Risk

The contamination in the groundwater has migrated up to 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. The hydrologic regime in the vicinity of the site has not been characterized and it is not known whether a current benficial groundwater source will be impacted within the next 5 years from contamination beneath the site.

Contaminants: Trichloroethylene (TCE) 17.0 ug/L

See more details...

Site ID: WP272

FORMER MOJAVE CORPORATION

Mixed Waste Area

Cost

$422K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jul 2020

Contaminated Areas

Soil: Low Risk

The suspected UST and grease pit contain potential pathways through both the subsurface (leading to the groundwater) and on the surface of the terrain. Humans rarely frequent the site, however wildlife frequent the area. Populations of federally protected desert tortoise are in the vicinity. The potential for inhalation of contaminated fugitive dust emissions during frequent high wind conditions exists.

Contaminants: Chrysene 0.0001 mg/kg

See more details...

Site ID: AL505-3

OFF BASE ADJACENT AREA 3

Air to Land

Cost

$1.04M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

This site is under ongoing monitoring until Sep 2050

Contaminated Areas

Soil: Low Risk

Contaminants: Chromium (VI) 0.032 mg/kg

See more details...

Site ID: ST020

PET BLDG 1862 REMOVED UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

$780K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Dec 2016

This site is under ongoing monitoring until Sep 2028

Contaminated Areas

Groundwater: Low Risk

TCE concentration is 3.6 ppb, below its MCL, and appears to originate from Site 18. A Site 18 IRA will remove the TCE in FY 99. Since the source is outside the site, and the site concentration is below MCLs, contaminant migration is confined. Since the source of the contamination is another site which is scheduled for remediation, there is no expected future receptor access to groundwater contamination from this site.

Contaminants: Trichloroethylene (TCE) 3.6 ug/L

Soil: Low Risk

There is no surface soil contamination. The area is on the flightline and there are human, plant and animal receptors, however, lack of surface contamination limits potential exposure.

Contaminants: Lead 0.002968 mg/kg Toluene 0.04913 mg/kg Ethyl benzene 0.0522 mg/kg

See more details...

Site ID: ST021

PET JET FUEL PIPELINE LEAKS AND REMOVED UNDERGROUND STORAGE TANKSS

POL (Petroleum/Oil/Lubricants) Lines

Cost

$2.79M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Dec 2018

Contaminated Areas

Groundwater: Low Risk

The extent of the groundwater contamination has remained stable for the past 15 years and no further migration is anticipated. Groundwater contamination has not yet impacted and is not likely to.

Contaminants: cis-1,2-Dichloroethylene 1.4 ug/L Trichloroethylene (TCE) 85.0 ug/L Naphthalene 230.0 ug/L Toluene 1800.0 ug/L Xylene (Mixed) 2700.0 ug/L Benzene 8700.0 ug/L

Soil: Low Risk

No Soil contamination - so no migration

Contaminants: Benzene 0.0 mg/kg

See more details...

Site ID: ST226

BLDG 3735 SUPPLY YARD & BLDG 3739 CONCRETE PAD

Underground Storage Tanks

Cost

$2.34M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

This site is under ongoing monitoring until Sep 2099

Contaminated Areas

Soil: Low Risk

The supply yard was paved in 1980, preventing migration of the impacted soil. Humans work on-site, but should not come in contact with contaminated surface soil due to the asphalt paving that covers the supply yard. Future construction workers may potentially be exposed to contaminated soil and inhalation of contaminants in air.

Contaminants: Benzene 0.4 mg/kg Arsenic 1.15 mg/kg

See more details...

Site ID: DP294

SOUTHERN LANCASTER BOULEVARD AREA FORMER SKEET SHO

Small Arms Range

Cost

$5.53M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jul 2021

Contaminated Areas

Soil: Low Risk

None of the metals leached at significant concentrations below 5 feet BGS - indicating no potential impact to groundwater (> 100 feet BGS). PAH analyses showed only Benzo(a)pyrene exceeded the residential PRG in samples from 5 feet BGS. Remote area inhibited by wildlife. Populations of federally protected desert tortoise have been spotted in the area. There is the potential for the inhalation of contaminated fugitive dust emissions during periods of frequent high wind activity.

Contaminants: Dibenz[ah]anthracene 7.4e-05 mg/kg Benz(a)Anthracene 0.0067 mg/kg Benzo(b)Fluoranthene 0.0069 mg/kg Benzo(a)Pyrene 0.015 mg/kg Lead 0.165 mg/kg

See more details...

Site ID: ST049

BLDG 1616 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

$8M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2022

Contaminated Areas

Groundwater: Low Risk

Contamination in the groundwater has migrated over 200 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration under the dry lake bed and then into the drinking water aquifer. Risk is Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source. Connectivity exists with the South Base production wells.

Contaminants: 1,1,1-Trichloroethane 0.5 ug/L Ethyl benzene 1.2 ug/L 1,2,4-Trimethylbenzene 1.3 ug/L cis-1,2-Dichloroethylene 2.8 ug/L Benzene 3.2 ug/L Toluene 4.2 ug/L Tetrachloroethylene 4.2 ug/L Xylene (Mixed) 4.4 ug/L 1,1-Dichloroethylene 5.0 ug/L Bis(2-Ethylhexyl)Phthalate 9.0 ug/L Trichloroethylene (TCE) 61.0 ug/L

See more details...

Site ID: DP001

NORTH BASE DRUM DISPOSAL SITE

Disposal Pit and Dry Well

Cost

$733K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2019

Contaminated Areas

Groundwater: Low Risk

Groundwater not currently used. TDS too high for normal drinking water

Contaminants: Thallium Chloride 6.0 ug/L

See more details...

Site ID: WP127

TEST AREA 1-52 PAD A DELUGE DRAINAGE SYSTEM

Drainage Ditch

Cost

$5.36M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jan 2019

Contaminated Areas

Groundwater: Low Risk

Additional groundwater monitoring wells are required to determine whether migration has or is occurring.

Contaminants: Trichloroethylene (TCE) 1.2 ug/L Benzoic Acid 80.0 ug/L 4-Methylphenol (p-Cresol) 190.0 ug/L

See more details...

Site ID: SD282

BLDG 4217, FLUORINE SCRUBBER BASIN

Storm Drain

Cost

$8.91M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2021

Contaminated Areas

Groundwater: Low Risk

The contamination has migrated, however, there is very little potential for additional migration since the groundwater is very deep, no hydraulic gradient no continuing source and modelling indicates at least 100 years to reach any wells. Connectivity may exist between groundwater in OU-5 and the base drinking water wells located in the nearby North Base area, however, modelling indicates a very long time to reach them

Contaminants: Carbon tetrachloride 24.0 ug/L Trichloroethylene (TCE) 150.0 ug/L

Soil: Low Risk

Very low concentrations of contaminants were detected at 52-54 ft bgs. Due to the depth, pathways are determined confined for all condition except excavation in the defined area. Depth to contamination in soil is beyond the exposure potential for receptors from the surface and still an estimated 5 years from contaminating a beneficial groundwater source.

Contaminants: Indeno(1,2,3-cd)Pyrene 0.00067 mg/kg Benzo(k)Fluoranthene 0.0014 mg/kg Benzo(a)Pyrene 0.0016 mg/kg

See more details...

Site ID: TU018

Duplicate Site Within Same Program

Cost

Unknown

Site ID: SS076

OLD SOUTH BASE ASSORTED FACILITIES

Spill Site Area

Cost

$665K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2011

This site is under ongoing monitoring until Mar 2023

Contaminated Areas

Groundwater: Medium Risk

TCE contamination in the groundwater has migrated over 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration under the dry lake bed and then into the drinking water aquifer. South Base potable water supply wells are located approximately 3.2 miles southwest. Contamination is not expected to impact a beneficial source within five years.

Contaminants: Chloroform 0.52 ug/L Xylene (Mixed) 1.1 ug/L 1,2,4-Trimethylbenzene 1.1 ug/L Bromodichloromethane 1.4 ug/L Bromoform 3.8 ug/L Dibromochloromethane 4.1 ug/L Trichloroethylene (TCE) 13.0 ug/L

See more details...

Site ID: OW575

BUILDING 3511 OWS

Oil/Water Separator

Cost

$1.9M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2020

Site ID: TU046

2754 (1418)

Underground Storage Tanks

Cost

$404K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 2016

Site ID: TU298

OU 8 SITE 298 PET BLDG. 2340 UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

$707K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2018

This site is under ongoing monitoring until Sep 2028

Site ID: SS312

TEST AREA 1-14 PCB SPILL AREA (BLDG 8622)

Spill Site Area

Cost

$2.5M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2010

Contaminated Areas

Soil: Medium Risk

PCB's in soil around transformer Workers may be exposed through direct contact with the contamination.

Contaminants: PCBs 0.17 mg/kg

See more details...

Site ID: SS167

TEST AREA 1-46 BERYLLIUM TEST FIRING RANGE

Firing Range

Cost

$2.91M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jul 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: LF013

ABANDONED LANDFILL

Landfill

Cost

$5.8M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 2002

Contaminated Areas

Groundwater: Medium Risk

Contaminants have been observed in downgradient wells at distances greater than 100 feet from suspected source area. At this time, groundwater beneath the site has been classified as part of the contaminated aquifer beneath Site 133 and any risk are assoc The Phillips Laboratory Wellfield is located downgradient of site. However, it is not known at this time whether the wellfield will be impacted within 5 years. Risk is associated with Site 133.

Contaminants: Trichlorofluoromethane 2.1 ug/L Toluene 3.5 ug/L Chloroform 9.4 ug/L Tetrachloroethylene 36.0 ug/L Acetone 37.0 ug/L cis-1,2-Dichloroethylene 120.0 ug/L Trichloroethylene (TCE) 3300.0 ug/L

See more details...

Site ID: SD037

PET - BLDG. 8595 AND TEST AREA 2-5 REMOVED UNDERGROUND STORAGE TANKSS

Surface Disposal Area

Cost

$7.85M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2007

Contaminated Areas

Groundwater: Medium Risk

Based on the results of the conceptual site model in the FS and contaminante transport modeling, there is little risk with the plume reaching the receptor. Contaminants have been found in downgradient wells in distances ranging from adjactent to the sourc Groundwater flow appears to take an eventual path toward the Phillips Laboratory wellfield. However, it is not known at this time whether the wellfield will be impacted within the next 5 years.

Contaminants: Trichloroethylene (TCE) 920.0 ug/L Tetrachloroethylene 46000.0 ug/L

Soil: Low Risk

Per the FS findings, there is no soil contamination at site 37. Contaminats in the subsurface soil may reach the underlying groundwater and/or act as a continuing source of groundwater contamination.

Contaminants: Perchloroethylene (PCE) 0.37 mg/kg

See more details...

Site ID: WP118

TEST AREA 1-36 TEST PAD D

Surface Runoff

Cost

$4.4M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2019

Site ID: WT120

BLDG. 8120 EVAPORATION PONDS (STP)

Waste Treatment Plant

Cost

$6.2M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2007

Contaminated Areas

Groundwater: Low Risk

Based on the results of the conceptual site model in the FS and contaminante transport modeling, there is little risk with the plume reaching the receptor. Contamination has migrated over 100 feet beyond the edge of the source and there are no known barri The Site is upgradient of the Phillips Laboratory Well Field and North Muroc Sub Basins, however, communication between the contaminant plume and the aquifer has not been established.

Contaminants: Trichloroethylene (TCE) 16.0 ug/L cis-1,2-Dichloroethylene 400.0 ug/L Tetrachloroethylene 550.0 ug/L

Surface Water: Risk Not Evaluated

Contaminants: cis-1,2-Dichloroethylene 9.2 ug/L

Surface Water (Fresh): Risk Not Evaluated

Contaminants: cis-1,2-Dichloroethylene 9.2 ug/L

See more details...

Site ID: SS006

ABANDONED MINE SHAFT (FORMERLY 6A)

Spill Site Area

Cost

$5.42M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 2010

This site is under ongoing monitoring until Sep 2099

Contaminated Areas

Soil: Low Risk

There is the potential for inhalation of contaminated soil during frequent dust storms. Receptors have limited access to the site.

Contaminants: Arsenic 0.05 mg/kg

See more details...

Site ID: XE039

SITE 39 OPEN BURN UNIT

Explosive Ordnance Disposal Area

Cost

$1.13M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2021

Site ID: TU297

BUILDING 2110 AAFES GAS STATION

Underground Storage Tanks

Cost

$1.43M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2018

Site ID: SS321

LIQUID PROPELLANT STORAGE COMPLEX BLDG 9423 CATCH

Spill Site Area

Cost

$6.2M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2007

Contaminated Areas

Groundwater: Low Risk

Additional groundwater monitoring wells are required to determine whether migration has or is occurring.

Contaminants: Chloroform 2.1 ug/L Tetrachloroethylene 2.2 ug/L Trichloroethylene (TCE) 18.0 ug/L

See more details...

Site ID: SS086

BLDG 300 ENGINE TEST CELL

Spill Site Area

Cost

$543K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2011

This site is under ongoing monitoring until Mar 2022

Contaminated Areas

Groundwater: Medium Risk

Contamination in the groundwater has migrated over 500 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration into the drinking water aquifer. Groundwater contamination has not yet impacted a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Trichloroethylene (TCE) 47.0 ug/L

Soil: Low Risk

Surface soil contamination can migrated to a point of exposure. Contamination in the bare topsoil is exposed to frequent high winds resulting in the inhalation of contaminated fugitive dust by receptors. There is no direct means for receptors to have access to surface soil contamination, however potential receptors are currently being evaluated.

Contaminants: 1,3-Xylene 0.233 mg/kg

See more details...

Site ID: SS046

Site Not Recommended For Action

Cost

Unknown

Site ID: SS298

Site Not Recommended For Action

Cost

Unknown

Site ID: CG538

TCE IN GROUNDWATER EAST OF MARY'S WELL FIELD

Contaminated Ground Water

Cost

$258K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2019

Site ID: FT014

SOUTH BASE FIRE FIGHTING TRAINING FACILITY

Fire/Crash Training Area

Cost

$2.82M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Dec 2013

Contaminated Areas

Groundwater: Medium Risk

Groundwater monitoring investigations indicate that the contaminant plume has migrated greater than 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. South Base water supply wells are located approximately 2-miles south of Site 14. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source.

Contaminants: Bis(2-Ethylhexyl)Phthalate 18.0 ug/L Iron 61.0 ug/L Nickel (soluble salts) 72.0 ug/L 4-Chloroaniline 74.0 ug/L Trichloroethylene (TCE) 200.0 ug/L

Soil: Medium Risk

Surface soil contamination has migrated to a point of exposure. Contamination in the bare topsoil is exposed to frequent high winds resulting in the inhalation of contaminated fugitive dust by receptors. Trainees periodically practice fire fighting techniques and drills in the area.

Contaminants: Cadmium and compounds 7.2e-07 mg/kg Methyl Chloride 7.2e-06 mg/kg Acetone 0.00012 mg/kg Antimony and compounds 0.0063 mg/kg Nickel (soluble salts) 0.0191 mg/kg

See more details...

Site ID: SS133

PHILLIPS LAB CIVIL ENGINEERING YARD

Spill Site Area

Cost

$6.2M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2007

Contaminated Areas

Groundwater: High Risk

Contaminants found in downgradient wells ranging from adjactent to source area to over 2500 feet from the source area. Groundwater underlying the site may be a recharge source for the Lancaster Groundwater Basin. 3 water supply wells are located approx. 2 miles south of the contaminant plume, however it is not known if the wells will be impacted within the next 5 years.

Contaminants: Chloroform 3.5 ug/L cis-1,2-Dichloroethylene 5.4 ug/L Tetrachloroethylene 10.0 ug/L Naphthalene 18.0 ug/L Trichloroethylene (TCE) 6700.0 ug/L

See more details...

Site ID: CG592

POL RELEASE AT TEST STAND 1A

Contaminated Ground Water

Cost

$1.9M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2020

Site ID: ST297

Site Not Recommended For Action

Cost

Unknown

Site ID: OW539

Duplicate Site Within Same Program

Cost

Unknown

Site ID: TU004

Duplicate Site Within Same Program

Cost

Unknown

252 Inactive Sites

Sites where military cleanup actions are complete, according to the DOD. Note that this status does not necessarily mean the site is no longer hazardous, as many of these sites are put under long-term monitoring or other restrictions.

Site ID: ST361

PET - BLDG 8680 REMOVED DIESEL UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP418

LEACH FIELD AND WASTE WATER PIPELINE

Leach Field

Cost

$73K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 2004

This site is under ongoing monitoring until Sep 2020

Contaminated Areas

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Groundwater: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: DP340

SOUTHWEST AREA SAND PIT

Disposal Pit and Dry Well

Cost

$224K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 2006

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Soil: Low Risk

There is no pathway because the groundwater is not impacted Remote area inhabited by wildlife.

Contaminants: Benzo(a)Pyrene 0.001 mg/kg

See more details...

Site ID: AL500

MAIN BASE CLOSED RANGE

Air to Land

Cost

Unknown

Final Cleanup Action

Apr 2010

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: AL501

SOUTH BASE ORDNANCE RANGE (NORTH AND SOUTH AREAS)

Air to Land

Cost

Unknown

Final Cleanup Action

Apr 2010

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: AL503

GATES RANGE AREAS (NORTH, SOUTH AND WEST)

Air to Land

Cost

Unknown

Final Cleanup Action

Apr 2010

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: CB450

HORSE STABLES

Contaminated Buildings

Cost

$158K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until Sep 2020

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: DP002

MAIN BASE TOXIC WASTE DISPOSAL SITE

Disposal Pit and Dry Well

Cost

$224K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 1986

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Soil: Medium Risk

Surface soil contamination has migrated to a point of exposure. Contamination in the bare topsoil is exposed to frequent high winds resulting in the inhalation of contaminated fugitive dust by receptors. Plants and both primary and secondary consumers (mammals) are located at the site and are potential receptors for any contamination in the soil. There are occasional recreational users on the site (motorcycles, bicycles, and joggers).

Contaminants: Lead 0.041 mg/kg

See more details...

Site ID: AL5052A

OFF BASE ADJACENT AREA 2 (EAST & WEST)

Air to Land

Cost

$61K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Apr 2010

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: AL5054A

OFF BASE ADACENT AREA 4 (EAST AND WEST)

Air to Land

Cost

$61K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Apr 2010

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: DP279

NORTH GATE RAILROAD AREA TAR PITS

Disposal Pit and Dry Well

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Soil: Low Risk

A grab sample of the tar substance was analysed for TPH. The laboratory reported that the smaple did not match any hydrocarbon products in the analytical library. Further investigation is recommended. Connectivity exists between the groundwater in OU-10 and the base drinking water wells located in the North Base area.

Contaminants: Benzo(a)Pyrene 0.001 mg/kg

See more details...

Site ID: DP293

SOUTHERN LANCASTER BOULEVARD AREA DUMP AND FORMER

Disposal Pit and Dry Well

Cost

$246K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Feb 2008

Contaminated Areas

Soil: Low Risk

Clarifier and contaminated sediment were removed - Aug 29, 2002. Receptor include both wildlife (federally protected species of plants and animals) and personnel that utilize the Branch Park area for recreation and fishing.

Contaminants: 4,4-DDD 0.0 mg/kg

See more details...

Site ID: DP292

PET SOUTHERN LANCASTER BOULEVARD AREA TAR PIT

Disposal Pit and Dry Well

Cost

$224K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Apr 2011

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Soil: Low Risk

Petroleum hydrocarbons may have been released from the tar to potential pathways through both the subsurface (leading to the groundwater) and on the surface of the terrain. Humans rarely frequent the site, however wildlife frequent the area. Populations of federally protected desert tortoise are in the vicinity. The potential for inhalation of contaminated fugitive dust emissions during frequent high wind conditions exists.

Contaminants: Indeno(1,2,3-cd)Pyrene 0.00071 mg/kg

See more details...

Site ID: DP295

PIUTE PONDS

Sewage Effluent Settling Ponds

Cost

$224K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Feb 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Soil: Medium Risk

There is the potential for the inhalation of airborne contaminated soil during frequent blowing wind. Potential receptors include populations of numerous waterfowl in the area, and animals throughout the region are attracted to this abundant source of water.

Contaminants: Arsenic 0.051 mg/kg

See more details...

Site ID: AL505

EAFB OFF-BASE ADJACENT AREAS

Air to Land

Cost

Unknown

Final Cleanup Action

May 2013

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: AL505-1

OFF BASE ADACENT AREA 1

Air to Land

Cost

Unknown

Final Cleanup Action

Apr 2010

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: DP084

OLD SOUTH BASE RUNWAY DISPOSAL AREA A

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Mar 1998

Contaminated Areas

Soil: Low Risk

There is a potential inhalation hazard during frequent dust storms. There is limited access to the site by receptors.

Contaminants: Arsenic 0.037 mg/kg

See more details...

Site ID: DP101

OLD SOUTH BASE RUNWAY DISPOSAL AREA B

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Mar 1998

Contaminated Areas

Soil: Low Risk

There is a potential inhalation hazard during frequent dust storms. Receptors have limited access to the site.

Contaminants: Arsenic 0.039 mg/kg

See more details...

Site ID: DP237

BLDG 4402 DARK ROOM FLOOR VAULT

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Dec 2003

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: DP276

NORTH BASE MISCELLANEOUS, AUTOMOBILE DISPOSAL AREA

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Oct 2008

Contaminated Areas

Soil: Low Risk

Potential contaminants may migrate into groundwater. No detected concentrations of TPH, volatile or semi-volatile organics in collected soil samples Potential receptors are currenty being evaluated, however, connectively exists between the groundwater in OU-10 and the base drinking water wells located in the North Base area.

Contaminants: Benzo(a)Pyrene 0.001 mg/kg

See more details...

Site ID: AL504A

7TH ARMY AIR FORCE BOMBING AND RUNNERY RANGE (AFRL

Air to Land

Cost

Unknown

Final Cleanup Action

Apr 2014

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: DP419

BLDG 2506 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Aug 2004

Contaminated Areas

Groundwater: Medium Risk

There are no know barriers to contaminate migration. Groundwater flow is towards the southeast. Contamination is not expected to impact a benefical source or the South Base Wellfiled that lies 4.4 miles to the southeast.

Contaminants: Trichloroethylene (TCE) 3.0 ug/L Benzene 8.8 ug/L 1,3,5-Trimethylbenzene 9.5 ug/L Bromodichloromethane 15.0 ug/L 1,2,4-Trimethylbenzene 18.0 ug/L Chloroform 23.0 ug/L Arsenic 89.0 ug/L Lead 94.0 ug/L Naphthalene 210.0 ug/L Aluminum 224000.0 ug/L Iron 323000.0 ug/L

Soil: Medium Risk

There is the potential for inhalation of airborne contaminated soil during frequent high wind. There is the potential for workers to be exposed to contaminated fugitive soil.

Contaminants: 1,3-Xylene 1.2 mg/kg

See more details...

Site ID: FT026

FIRE TRAINING AREA

Fire/Crash Training Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Medium Risk

TCE contamination has been detected in several wells greater than 100 feet downgradient of the site and there are no known barriers to contaminant migration. Groundwater flow is in the direction of the Phillips Laboratory Wellfield. However, impact to the wellfield within 5 years is not known. California EPA considers all groundwater to be a potential domestic or agricultural source.

Contaminants: PCE 5.0 ug/L Trichlorofluoromethane 23.0 ug/L Trichloroethylene (TCE) 300.0 ug/L

See more details...

Site ID: FT338

TEST AREA 1-100 FORMER TEST STAND AND BURN PIT

Burn Area

Cost

Unknown

Final Cleanup Action

Apr 2003

Contaminated Areas

Soil: Low Risk

There is the potential for inhalation of airborne contaminated soil during frequent high wind. Potential contaminants may be a source of exposure for workers.

Contaminants: Arsenic 0.019 mg/kg

See more details...

Site ID: LF004

MAIN BASE ACTIVE SANITARY LANDFILL

Landfill

Cost

Unknown

Final Cleanup Action

Dec 1992

Contaminated Areas

Groundwater: Low Risk

Contaminants observed only in groundwater wells within the interior of the site. No downgradient wells have detected contamination. The base housing area is located approximately 1 mile away. Groundwater in the immediate vicinity of the site is classified as a potential source for domestic or agricultural purposes by the California State water laws.

Contaminants: Trichloroethylene (TCE) 7.0 ug/L 1,1-Dichloroethane 9.0 ug/L Methylene Chloride 43.0 ug/L

Soil: Low Risk

All landfill cells are covered. All current disposal is above grade. The landfill area is fenced and access to the site is controlled.

Contaminants: Vanadium 1.3e-05 mg/kg Manganese and compounds 0.0002 mg/kg Nickel (soluble salts) 0.0015 mg/kg Arsenic 0.0063 mg/kg Lead 0.0077 mg/kg Barium 0.036 mg/kg Zinc 0.049 mg/kg Aluminum 5.2 mg/kg Iron 9.0 mg/kg

See more details...

Site ID: LF069

OLD SOUTH BASE NORTH LANDFILL

Landfill

Cost

Unknown

Final Cleanup Action

May 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: LF106

OLD SOUTH BASE HOSPITAL LANDFILL

Landfill

Cost

Unknown

Final Cleanup Action

May 1997

Contaminated Areas

Soil: Low Risk

There is little potential for contaminants in the soil to migrate to a point of exposure. There is little potential for contamination to migrate downgradient of the source. There is no expected future receptor access to soil contamination.

Contaminants: Methylene Chloride 8.4e-06 mg/kg Acetone 1.6e-05 mg/kg

See more details...

Site ID: OT425

CHEMICAL STORAGE/TOXIC FUEL STORAGE

Mixed Waste Area

Cost

Unknown

Final Cleanup Action

Sep 2003

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.038 mg/kg

See more details...

Site ID: OT427

BASE CHEMICAL STORAGE AREA

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Jul 2003

Contaminated Areas

Soil: Low Risk

There is the potential for inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.034 mg/kg

See more details...

Site ID: OT428

BASE CHEMICAL STORAGE AREA

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Oct 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.082 mg/kg

See more details...

Site ID: OT429

BASE CHEMICAL STORAGE AREA

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Dec 2003

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. In the site vicinity, unconsolidated fine- to coarse-grained alluvial and playa deposits extend to 85 to 100 feet below the ground surface (bgs) where weath Receptor access to the site is limited.

Contaminants: Arsenic 0.059 mg/kg

See more details...

Site ID: OT430

CHEMICAL PRACTICE BOMBING TARGET

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Jan 2005

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.049 mg/kg

See more details...

Site ID: OT431

WEST ABERDEEN BOMBING MISSION TARGET AREA

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Jan 2005

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.039 mg/kg

See more details...

Site ID: OT439

MUSTARD CANS (HD), PICRIC ACID

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Dec 2002

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.044 mg/kg

See more details...

Site ID: OT440

MUSTARD CANS (HD), PICRIC ACID

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Feb 2003

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. The site vicinity is characterized by unconsolidated granular sediments overlying granitic bedrock. Groundwater is estimated to occur at 200 feet below the Receptor access to the site is limited.

Contaminants: Arsenic 0.034 mg/kg

See more details...

Site ID: OT444

FORMER PRACTICE BOMBING-10-EOD DISPOSAL AREA

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Dec 2003

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.046 mg/kg

See more details...

Site ID: OT432

EAST ABERDEEN BOMBING MISSION TARGET AREA

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Oct 2005

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptors have limited access to the site.

Contaminants: Arsenic 0.045 mg/kg

See more details...

Site ID: OT434

MUSTARD CANS (HD), PICRIC ACID

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Jan 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptors have limited access to the site.

Contaminants: Arsenic 0.027 mg/kg

See more details...

Site ID: OT435

MUSTARD CANS (HD), PICRIC ACID

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Jan 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptors have limited access to the site.

Contaminants: Arsenic 0.032 mg/kg

See more details...

Site ID: OT436

MUSTARD CANS (HD), PICRIC ACID

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Jan 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.039 mg/kg

See more details...

Site ID: ST221

BLDG. 668 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jul 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: OT437

MUSTARD CANS (HD), PICRIC ACID

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Aug 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.057 mg/kg

See more details...

Site ID: SD062

BLDG 1850 DRAINAGE SWALE

Surface Disposal Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD067

BDG 1414 RELEASE SITE

Surface Disposal Area

Cost

$224K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Surface Water (Ecological): Risk Not Evaluated

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

See more details...

Site ID: SD195

BLDG 4232, CATCH TANK

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 1998

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: OT438

MUSTARD CANS (HD), PICRIC ACID

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Aug 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptors have limited access to the site.

Contaminants: Arsenic 0.048 mg/kg

See more details...

Site ID: SD196

BLDG 4233, CATCH TANK

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD197

BLDG 4234, CATCH TANK

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD198

BLDG 4236, CATCH TANK

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD200

BLDG 4243, CATCH TANK

Storm Drain

Cost

$139K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 1998

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: OT445

SIMULANT DETECTION EQUIPMENT TESTING LOCATION

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Jan 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.036 mg/kg

See more details...

Site ID: OT446

EAST CAMP

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Dec 2002

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited

Contaminants: Arsenic 0.029 mg/kg

See more details...

Site ID: OT448

NORTH BASE SLED TRACK TESTING

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Oct 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.032 mg/kg

See more details...

Site ID: SD078

OLD SOUTH BASE VEHICLE MAINTENANCE AREA 2

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Dec 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD079

OLD SOUTH BASE VEHICLE MAINTENANCE AREA 1

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Dec 1997

Contaminated Areas

Soil: Low Risk

Surface soil contamination can migrate to a point of exposure. Contamination in the bare topsoil is exposed to frequent high winds resulting in the inhalation of contaminated fugitive dust by receptors. There is no direct means for receptors to have access to surface soil contamination, however potential receptors are currently being evaluated.

Contaminants: Xylene (Mixed) 0.0001 mg/kg

See more details...

Site ID: SD087

OLD SOUTH BASE STORMWATER OUTFALL

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Mar 1998

Contaminated Areas

Groundwater: Low Risk

Contamination in the groundwater has migrated over 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration into the drinking water aquifer. Groundwater contamination has not yet impacted a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Dibromochloromethane 1.7 ug/L Bromoform 1.7 ug/L Trichloroethylene (TCE) 6.3 ug/L

Soil: Low Risk

Contamination in the soil can migrate to a point of exposure. There is poor containment of soil and favorable topography for migration. There is no direct means for receptors to have access to surface soil contamination.

Contaminants: 1,2-Dichloroethane (EDC) 5.5e-06 mg/kg DDD 9.1e-06 mg/kg Methylene Chloride 9.2e-06 mg/kg Lead 0.219 mg/kg

See more details...

Site ID: SD095

OLD SOUTH BASE GAS STATION 3 AND UNDERGROUND STORAGE TANKS

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Aug 1998

Contaminated Areas

Soil: Low Risk

Surface soil contamination can migrate to a point of exposure. Contamination in the bare topsoil is exposed to frequent high winds resulting in the inhalation of contaminated fugitive dust by receptors. There is no direct means for receptors to have access to surface soil contamination, however potential receptors are currently being evaluated.

Contaminants: Lead 0.589 mg/kg

See more details...

Site ID: SD174

BLDG 8595 PAINT & SANDBLAST AREA

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Feb 2001

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD206

BLDG 4801, FORMER APU DRAINAGE AREA

Storm Drain

Cost

Unknown

Final Cleanup Action

Nov 2003

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: OT449

SOUTH BASE SLED TRACK TESTING

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Oct 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.046 mg/kg

See more details...

Site ID: SD038

LIQUID PROPELLANT STORAGE COMPLEX UNLINED PIT

Surface Disposal Area

Cost

$164K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 1995

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD313

LEUHMAN RIDGE ARROYO NO. 2

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Apr 2003

Contaminated Areas

Groundwater: Medium Risk

Contamination in the groundwater has migrated over 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration into the drinking water aquifer. It is not known at this time whether the downgradient drinking water aquifer beneath the communitiy of Boron will be impacted within five years.

Contaminants: cis-1,2-Dichloroethylene 1.1 ug/L Acetone 11.0 ug/L Tetrachloroethylene 35.0 ug/L Trichloroethylene (TCE) 190.0 ug/L

Soil: Risk Not Evaluated

Contaminants: 1,1,1-Trichloroethane 5.5e-06 mg/kg

See more details...

Site ID: SS007

TEST AREA 1-46 BERYLLIUM CONTAMINATED EARTH PILES

Spill Site Area

Cost

Unknown

Final Cleanup Action

Jul 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS030

ABANDONED WATER WELLS

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Low Risk

Monitoring has indicated that the contamination in the groundwater has migrated greater than 100 feet beyond the edge of the source and there are no known barriers to contaminant migration Groundwater contamination has not yet impacted a beneficial source and is not expected to impact one within five years. Groundwater is classified as a potential domestic or agricultural source by the California State water laws.

Contaminants: Toluene 6.4 ug/L Acetone 22.0 ug/L Trichloroethylene (TCE) 160.0 ug/L Vinyl Chloride 1100.0 ug/L Phenol 3100.0 ug/L Arsenic 4400.0 ug/L

See more details...

Site ID: SS034

AVENUE A, UNAUTHORIZED BURN SITE

Burn Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Soil: Low Risk

Migration of contaminated soils has been retarded using a polymer coating. The area has been fenced off to prevent human access to the site.

Contaminants: Dioxin (2,3,7,8-TCDD) 2.37e-05 mg/kg Copper and compounds 31.0 mg/kg Zinc 70.0 mg/kg Lead 94.0 mg/kg

See more details...

Site ID: SS040

PET - TEST AREA 1-110 SOUTHEAST TRENDING CHANNEL

Spill Site Area

Cost

Unknown

Final Cleanup Action

Apr 2005

Contaminated Areas

Soil: Medium Risk

High concentrations of diesel are sufficient to migrate downward into groundwater. There is poor containment of soil and favorable topography for migration. Exposure to fuel hydrocarbons may occur during construction activities where excavations occur.

Contaminants: Toluene 7.0 mg/kg

See more details...

Site ID: SS055

BLDG 1735 FLOOR DRAIN

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: High Risk

Site 55 was transferred to compliance on 12/30/1998.

Contaminants: Cumene 2.2 ug/L Lead 6.4 ug/L Naphthalene 28.0 ug/L Benzene 77.0 ug/L Zinc 460.0 ug/L

Soil: High Risk

Site 55 was transferred to compliance on 12/30/1998.

Contaminants: Beryllium and compounds 0.0014 mg/kg Antimony and compounds 0.0104 mg/kg Cobalt 0.0149 mg/kg Arsenic 0.0505 mg/kg Aluminum 26.8 mg/kg Iron 35.8 mg/kg

See more details...

Site ID: SS070

OLD SOUTH BASE UTILITY YARD AND EQUIPMENT SHOP

Spill Site Area

Cost

Unknown

Final Cleanup Action

Nov 1995

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS071

OLD SOUTH BASE FACILITIES AND FUEL DEPOT

Spill Site Area

Cost

Unknown

Final Cleanup Action

May 2001

Contaminated Areas

Groundwater: High Risk

Contamination in the groundwater has migrated over 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration under the dry lake bed and then into the drinking water aquifer. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source.

Contaminants: Xylene (Mixed) 5.8 ug/L Cumene 5.8 ug/L Lead 6.1 ug/L o-Xylene 6.1 ug/L Benzene 8.1 ug/L 1,2-Dichloroethane (EDC) 9.2 ug/L Naphthalene 11.0 ug/L Toluene 16.0 ug/L Aluminum 310.0 ug/L Barium 470.0 ug/L Manganese and compounds 4500.0 ug/L

See more details...

Site ID: SS081

OLD SOUTH BASE NORTHERN SKEET RANGE

Spill Site Area

Cost

Unknown

Final Cleanup Action

Nov 1995

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS083

OLD SOUTH BASE ENGINE THRUST TEST AREA

Spill Site Area

Cost

Unknown

Final Cleanup Action

Nov 1995

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS153

BLDG. 8421 WASTE DISCHARGE AREA AND DRYWELLS

Spill Site Area

Cost

Unknown

Final Cleanup Action

Jun 2001

Contaminated Areas

Groundwater: High Risk

Groundwater contamination has been detected in wells located greater than 100 feet downgradient of potential source area. Groundwater flow direction is in the direction of the Phillips Laboratory Wellfield, however, it not known at this time whether the Wellfield will be impacted by contaminant migration within the next five years.

Contaminants: Chloroform 3.1 ug/L PCE 19.0 ug/L Trichloroethylene (TCE) 3200.0 ug/L

See more details...

Site ID: SS247

OLD NORTH BASE FORMER INFLAMMABLE STORAGE SHED

Spill Site Area

Cost

Unknown

Final Cleanup Action

Dec 2003

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS248

OLD NORTH BASE FORMER FIRE STATION

Spill Site Area

Cost

Unknown

Final Cleanup Action

May 2004

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS100

OLD SOUTH BASE ARRESTING GEAR DISCHARGE AREA

Spill Site Area

Cost

Unknown

Final Cleanup Action

Jun 1998

Contaminated Areas

Groundwater: Low Risk

Contamination in the groundwater has migrated over 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration into the drinking water aquifer. Groundwater contamination has not yet impacted a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Bis(2-Ethylhexyl)Phthalate 15.0 ug/L

Soil: Low Risk

Surface soil contamination can migrate to a point of exposure. Contamination in the bare topsoil is exposed to frequent high winds resulting in the inhalation of contaminated fugitive dust by receptors. There is no direct means for receptors to have access to surface soil contamination, however potential receptors are currently being evaluated.

Contaminants: Methylene Chloride 9.1e-06 mg/kg Acetone 6.8e-05 mg/kg Arsenic 0.024 mg/kg

See more details...

Site ID: SS102

OLD SOUTH BASE SOUTHERN SKEET RANGE

Spill Site Area

Cost

Unknown

Final Cleanup Action

May 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS109

OLD SOUTH BASE HOSPITAL FIRE STATION

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Soil: Low Risk

There is the potential for inhalation of contaminated soil during frequent dust storms. Receptors have limited access to the site.

Contaminants: 1,3-Xylene 1.7 mg/kg

See more details...

Site ID: SS259

BLDG 5613 ACCUMULATION POINT AND PRODUCT OIL DRUM

Spill Site Area

Cost

Unknown

Final Cleanup Action

Apr 2004

Contaminated Areas

Soil: Medium Risk

Reliable analytical data shows the potential for soil contamination to migrated to a point of exposure. There is poor containment of soil, no cover and favorable topography for migration. TPH detected in soil samples ranged from 5.9 to 14,000 ppm. Humans work in the site vicinity and wildlife live in the area. There is the potential for inhalation of contaminated fugitive dust emissions during frequent high wind conditions.

Contaminants: Benzo(a)Pyrene 0.024 mg/kg Benzo(b)Fluoranthene 0.039 mg/kg

Groundwater: Low Risk

The contamination has migrated up to 100 feet of the source. Note that the constituent 1,3-xylene is a substitute contaminant for TPH which is not included as a Relative Risk Contaminant but is mandated by California Law. Receptors have limited access to the site.

Contaminants: 1,3-Xylene 9600.0 ug/L

See more details...

Site ID: SS409

WELL # RI 8/10-13R1

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Low Risk

Available information indicated there is no known existing source for the detected inorganics, therefore, it is suspected the inorganic contaminants are either naturally occuring or are the byproducts of the deterioration of the well casing. The detected The detected organic and inorganic contaminants are below the federal and state MCLs, therefore they are not a threat to source of drinking water

Contaminants: Lead 0.0 ug/L Arsenic 0.0 ug/L Barium 0.0 ug/L Chromium 0.01 ug/L Bis(2-Ethylhexyl)Phthalate 3.4 ug/L Toluene 4.8 ug/L

Soil: Low Risk

Potentially contaminated product or waste may have been produced from farming or ranching activities and then improperly disposed of in the wells. Well had a soil plug substantailly above the groundwater that retaianed the contaminants to within the well. The potentially contaminated product or waste was contained in the well plug soils and did not have a potential for receptors to access to them.

Contaminants: Acetone 2.0e-05 mg/kg Benzo(k)Fluoranthene 0.0022 mg/kg Indeno(1,2,3-cd)Pyrene 0.027 mg/kg Arsenic 0.0369 mg/kg Anthracene 0.038 mg/kg Benzo(a)Pyrene 0.042 mg/kg Chrysene 0.06 mg/kg Benzo(b)Fluoranthene 0.067 mg/kg Pyrene 0.12 mg/kg Antimony and compounds 0.129 mg/kg

See more details...

Site ID: SS410

WELL # RI 8 / 11-14P2

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Soil: Low Risk

Potentially contaminated soils were within the well soil plug that was removed when well casing was cleaned out. The site is remote and receptor access is limited.

Contaminants: Acetone 0.0002 mg/kg Lead 0.343 mg/kg

See more details...

Site ID: SS415

WELL # RI 10/9-23M1

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Soil: Medium Risk

Soil contamination has migrated to a point of exposure. Contaminants are located inside the well which is a direct conduit to groundwater. There is no direct means for receptors to have access to soil contamination, however nearby communities use the aquifer for drinking water.

Contaminants: Benzene 8.0e-06 mg/kg Acetone 1.7e-05 mg/kg Methane,chlorodibromo- 0.16 mg/kg

See more details...

Site ID: SS416

WELL # RI 10/12-22Q1

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Low Risk

Contamination in the groundwater has little potential for migration. Five monitoring wells were installed at the site. Arsenic levels detected in these five monitoring wells did not exceed the background arsenic levels. Contamination is not expected to impact a production well or other drinking water source.

Contaminants: Arsenic 4400.0 ug/L

Soil: Low Risk

Average contaminant in well soil is comparable to same contaminant in surronding area. Potential for receptors to have access to contaminant in well soil is limited since it is contained within the well.

Contaminants: Arsenic 0.0274 mg/kg

See more details...

Site ID: ST031

OU8 SITE 31 PET BLDGS 4924 AND 4929 MAIN BASE FUEL

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jun 2001

Contaminated Areas

Groundwater: High Risk

Contamination in the groundwater has migrated over 500 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migrating under the dry lake bed and then into the drinking water aquifer. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source. Connectivity exists with the South Base production wells.

Contaminants: Naphthalene 230.0 ug/L 1,2,4-Trichlorobenzene 730.0 ug/L Xylene (Mixed) 3200.0 ug/L Toluene 5400.0 ug/L Benzene 9100.0 ug/L

See more details...

Site ID: ST032

PET- RAILROAD FUEL TRANSFER AREA (BLDG 8779)

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Apr 2005

Contaminated Areas

Soil: Medium Risk

There is only a very limited potential that subsurface soil contamination can migrate to a point of exposure. Most of the soil contamination in the western wash and spigot areas have been removed. Due to the site geology and hydrogeology (depth to groundwater encountered during drilling greater than 80 feet bgs, the potential for a vertical migration of the petroleum fuel contaminants through the fractured weathered bedrock is apparently very low.

Contaminants: 1,3-Xylene 15.0 mg/kg

See more details...

Site ID: ST009

OU8 SITE 9 PET MAIN BASE ASPHALTIC SEALER STORAGE

Above Ground Storage Tank

Cost

Unknown

Final Cleanup Action

Jun 1996

Contaminated Areas

Soil: Risk Not Evaluated

Contaminants: Benzene 4.0e-07 mg/kg

See more details...

Site ID: ST022

BLDGS 60 AND 134 UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

May 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST043

BLDG 1200 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS411

WELL # RI 8/11-18E1

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Medium Risk

Contamination is localized and not expected to migrate. Analytical results for water samples collected from historic water wells at Edwards AFB indicates arsenic commonly exceeds MCLs. Contamination has the potential to impact a beneficial source. California EPA considers all groundwater to be a potential domestic or agricultural source. Connectivity exists with the nearby community's drinking wells.

Contaminants: 4-Methylphenol (p-Cresol) 190.0 ug/L Arsenic 660.0 ug/L

See more details...

Site ID: SS412

WELL # RI 8/12-2D2

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: High Risk

Contamination in the groundwater has migrated over 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source. Connectivity exists with the nearby community's drinking wells.

Contaminants: Cadmium and compounds 280.0 ug/L Arsenic 760.0 ug/L 4-Methylphenol (p-Cresol) 1200.0 ug/L Zinc 87200.0 ug/L

See more details...

Site ID: SS413

WELL # 8/12-11D1

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Soil: High Risk

Soil contamination has migrated to a point of exposure. Contaminants are located inside the well which is a direct conduit to groundwater. There is no direct means for receptors to have access to soil contamination, however nearby communities use the aquifer for drinking water.

Contaminants: Arsenic 0.019 mg/kg Antimony and compounds 0.0692 mg/kg Manganese and compounds 0.928 mg/kg

See more details...

Site ID: SS534

182

Spill Site Area

Cost

Unknown

Final Cleanup Action

Oct 2014

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST072

OLD SOUTH BASE UNDERGROUND STORAGE TANKSS 1 TO 4

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Mar 1998

Contaminated Areas

Groundwater: Low Risk

There is little potential for the contaminant to travel to drinking water aquifers. The is limited access to the groundwater at the site.

Contaminants: 1,3-Xylene 3100.0 ug/L

See more details...

Site ID: ST073

OLD SOUTH BASE UNDERGROUND STORAGE TANKSS 5 TO 7

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Mar 1998

Contaminated Areas

Groundwater: Low Risk

There is little potential for the contaminant to travel to drinking water aquifers. The is limited access to the groundwater at the site.

Contaminants: 1,3-Xylene 3900.0 ug/L

See more details...

Site ID: ST080

BLDG 369 UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

May 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST082

BLDG 300 FACILITIES

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jul 1998

Contaminated Areas

Groundwater: Low Risk

Contamination in the groundwater has migrated up to 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration under the dry lake bed and then into the drinking water aquifer. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source.

Contaminants: Aluminum 3100.0 ug/L Iron 3100.0 ug/L

See more details...

Site ID: ST085

OLD SOUTH BASE FUEL PIPELINE SYSTEM

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Aug 2001

Contaminated Areas

Groundwater: High Risk

Contamination in the groundwater has migrated over 100 feet beyond the edge of the source and there are no known barriers to contaminant migration. The potential exists of migration into the drinking water aquifer. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source.

Contaminants: Benzene 45.0 ug/L Cumene 56.0 ug/L o-Xylene 71.0 ug/L m-Xylene 75.0 ug/L Bis(2-Ethylhexyl)Phthalate 110.0 ug/L Naphthalene 120.0 ug/L Trichloroethylene (TCE) 380.0 ug/L

See more details...

Site ID: ST088

OLD SOUTH BASE UNDERGROUND STORAGE TANKSS 28 TO 43 AND 92

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST089

OLD SOUTH BASE UNDERGROUND STORAGE TANKSS 44 TO 50, 94 AND 96

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jun 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST090

OLD SOUTH BASE UNDERGROUND STORAGE TANKSS 51 TO 54

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

May 1996

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST091

OLD SOUTH BASE UNDERGROUND STORAGE TANKSS 55 TO 58

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

May 1996

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST092

OLD SOUTH BASE UNDERGROUND STORAGE TANKSS 79 TO 83

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Dec 1994

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST094

BLDGS 175, 181, 182, AND 204 FACILITIES

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jul 1998

Contaminated Areas

Groundwater: Medium Risk

Biovent system is believed to be effective in limiting the migration of contamination of volatiles. Groundwater contamination has not yet impacted a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Carbon tetrachloride 1.3 ug/L 1,3,5-Trimethylbenzene 1.8 ug/L Naphthalene 2.2 ug/L Xylene (Mixed) 2.5 ug/L 1,2,4-Trimethylbenzene 2.5 ug/L Chromium 6400.0 ug/L

See more details...

Site ID: ST097

OLD SOUTH BASE THIRD BOMBER SQUADRON AREA

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

May 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST099

OLD SOUTH BASE GREASE PIT AND GAS STATION 4

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jun 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST105

OLD SOUTH BASE HOSPITAL AREA

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Dec 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST108

BLDG 791 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

May 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST137

PET- BLDG 8421 HEATING OIL UNDERGROUND STORAGE TANKS'S

Underground Tank Farm

Cost

Unknown

Final Cleanup Action

May 2001

Contaminated Areas

Soil: Medium Risk

High concentrations of diesel are sufficient to migrate downward into groundwater. There are no direct means for receptors to have access to soil contamination however, exposure to fuel hydrocarbons may occur during construction activities where excavations occur.

Contaminants: Ethyl benzene 0.00016 mg/kg Xylene (Mixed) 0.0013 mg/kg Toluene 32.3 mg/kg

See more details...

Site ID: ST143

PET - TEST AREA 1-14 REMOVED HEATING OIL UNDERGROUND STORAGE TANKS'S 1 &

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 1999

Contaminated Areas

Soil: Low Risk

The site is currently under cleanup via bioventing system. Note that the constsituent 1,3 xylene is a substitute for TPH which is not included in the RR list but is mandated by California Law. The site is currently under cleanup via bioventing system.

Contaminants: 1,3-Xylene 0.21 mg/kg

See more details...

Site ID: ST145

PET - BLDG 8255 AND BLDG 8359 REMOVED UNDERGROUND STORAGE TANKS'S

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST146

PET- BLDG 8406 REMOVED UNDERGROUND STORAGE TANKS (CE YARD)

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST185

PET - BLDG 8451 REMOVED UNDERGROUND STORAGE TANKSS AND ABANDONED OIL UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Oct 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST223

BLDG. 1506 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 2004

Contaminated Areas

Groundwater: Medium Risk

Contaminants have not migrated from the source. South Base water supply wells are located approximately 20,000 feet southwest of PRL 223. However, it is not known at this time whether the wellfield will be impacted within the next 5 years.

Contaminants: 2-Methylphenol (o-Cresol) 13.0 ug/L Naphthalene 120.0 ug/L 1,2-Dichloroethane (EDC) 280.0 ug/L 1,3,5-Trimethylbenzene 800.0 ug/L o-Xylene 1700.0 ug/L m-Xylene 3900.0 ug/L Benzene 4700.0 ug/L Toluene 12000.0 ug/L

See more details...

Site ID: ST229

BLDG 4305 REMOVED UNDERGROUND STORAGE TANKS

Sewage Treatment Plant

Cost

Unknown

Final Cleanup Action

Aug 2000

Contaminated Areas

Soil: Low Risk

Surface soil contamination can migrate to a point of exposure. Contamination in the bare topsoil is exposed to frequent high winds resulting in the inhalation of contaminated fugitive dust by receptors. Note that the constituent 1,3-xylene is a substitute There is no direct means for receptors to have access to surface soil contamination, however potential receptors are currently being evaluated.

Contaminants: Ethyl benzene 0.0031 mg/kg Xylene (Mixed) 0.01 mg/kg 1,3-Xylene 0.21 mg/kg

See more details...

Site ID: ST234

BLDG 4389 ABOVEGROUND & UNDERGROUND FUEL TANKS & E

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Aug 2004

Contaminated Areas

Groundwater: Medium Risk

Information is not sufficient to make a determination of evident or confined. Groundwater contamination has not yet impacted a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Benzene 150.0 ug/L

Soil: Low Risk

Potential contaminants may migrate into groundwater. Receptors include the personnel that work on site along with wildlife and native vegetation. Connectivity exists between the groundwater in OU-10 and the base drinking water wells located in the North Base area.

Contaminants: Naphthalene 0.042 mg/kg

See more details...

Site ID: ST075

OLD SOUTH BASE SECOND BOMBER SQUADRON AREA

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

May 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST243

BLDG 4511 TANK FARM

Sewage Treatment Plant

Cost

Unknown

Final Cleanup Action

Apr 1999

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST262

BLDG 8020 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Apr 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST263

BLDG 8025 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Apr 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST264

BLDG 8030 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Apr 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST265

BLDG 8035 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Apr 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST302

CALNEV JP-4 FUEL PIPELINE

POL (Petroleum/Oil/Lubricants) Lines

Cost

Unknown

Final Cleanup Action

Nov 2004

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: 1,3-Xylene 0.5 mg/kg

See more details...

Site ID: ST341

BLDG 012 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

May 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST342

BLDG 1014 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Dec 1991

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST343

BLDG 1209 REMOVED UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jul 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST345

BLDG 2601 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Dec 1991

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST346

BLDG 2649 REMOVED UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Dec 1991

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST347

OU8 SITE 347 PET BLDGS 3500 AND 3503 INACTIVE UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jun 1991

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST348

BLDG 4220 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Nov 1990

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST349

BLDG 4221 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Nov 1990

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST351

BLDG 4800 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Mar 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST352

OU8 SITE 352 PET BLDG 4910 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 1991

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST353

BLDG 5779 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Apr 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST354

PET - BLDG 8354 REMOVED HEATING OIL UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST355

PET - BLDG 8374 REMOVED DIESEL UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST356

PET - BUILDINGS 8407, 8410 & 8411 REMOVED UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST238

BLDG 4402 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1999

Contaminated Areas

Groundwater: Low Risk

Currently, information is not available to support an MPF of evident or confined. Further sampling is necessary to further define the extent of petroleum contamination. There is no threatened water supply well down gradient from the source and the groundwater is potentially usable for drinking water, irrigation, or agriculture.

Contaminants: Tetrachloroethylene 11.0 ug/L

See more details...

Site ID: WP028

BLDG 5790 SEPTIC SYSTEM

Leach Field

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Feb 2003

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Low Risk

Limited site assessment activities have been performed. Additional assessment activities are believed will reveal more extensive contamination at the site. There is the potential for a pathway to exist to human and ecological receptors. Potential receptors have not been evaluated.

Contaminants: Ethylene Glycol 134000.0 ug/L

See more details...

Site ID: WP047

BLDG 1435 FORMER GRAVEL-LINED PIT

Disposal Pit and Dry Well

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST358

PET - BLDG 8424 REMOVED UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST359

PET - BLDG 8525 REMOVED DIESEL UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST360

BLDG 9428 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 1991

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST365

BLDG 1030 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST366

BLDG 2560 ACTIVE UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Dec 1999

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Note that 1,3-xylene is a substitute contaminant for TPH which is not included in the RR list contaminants but is mandated under California Law. Receptor access to the site is limited.

Contaminants: 1,3-Xylene 0.21 mg/kg

See more details...

Site ID: ST369

BLDG 4217, INACTIVE UNDERGROUND STORAGE TANKS

Sewage Treatment Plant

Cost

Unknown

Final Cleanup Action

Jun 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST370

BLDG 4505 REMOVED UNDERGROUND STORAGE TANKS

Sewage Treatment Plant

Cost

Unknown

Final Cleanup Action

Aug 2004

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST376

BLDG 8953 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST402

BLDG 4500 REMOVED UNDERGROUND STORAGE TANKS

Sewage Treatment Plant

Cost

Unknown

Final Cleanup Action

Mar 2004

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP012

TEST AREA 1-125 CATCHMENT BASIN

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Surface Water: Low Risk

The surface water is contained in a catchment basin. There is little potential for the contaminants to migrate to a point of exposure. The surface water contamination will not impact a productin well or other drinking water source.

Contaminants: Phenol 5000.0 ug/L

Surface Water (Fresh): Low Risk

The surface water is contained in a catchment basin. There is little potential for the contaminants to migrate to a point of exposure. Potential receptors are currently being evaluated.

Contaminants: Phenol 5000.0 ug/L

See more details...

Site ID: WP107

OLD SOUTH BASE HOSPITAL EVAPORATION POND

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Nov 1995

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP110

BLDG 190 EVAPORATION PONDS

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

May 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP111

BLDG 190 SEWAGE TREATMENT PLANT

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP112

BLDG 190 FORMER EVAPORATION PONDS

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Nov 1995

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP150

BLDG.8451 FORMER BERYLLIUM AND WASTE EVAPORATION

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Dec 1999

Contaminated Areas

Groundwater: Medium Risk

Groundwater contamination at and greater than 100 feet down gradient of site has been confirmed as indicated by laboratory analytical results from adjacent site wells. Risk is being address under Site 133. Groundwater flow direction is toward the Phillips Laboratory Wellfield, however, it not known at this time whether the Wellfield will be impacted by contaminant migration within the next five years.

Contaminants: Chloroform 5.5 ug/L 1,2-Dichloroethane (EDC) 11.0 ug/L Tetrachloroethylene 140.0 ug/L cis-1,2-Dichloroethylene 160.0 ug/L Trichloroethylene (TCE) 530.0 ug/L

See more details...

Site ID: WP151

BLDG 8431 REMOVED HEATING OIL UNDERGROUND STORAGE TANKS'S

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Aug 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP170

BLDG 8595 VAPOR DEGREASER SUMP (INDOOR)

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Apr 1999

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST357

PET - BLDG 8423 REMOVED HEATING OIL UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP188

BLDG 4202 TS-A; CATCH BASIN

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP192

BLDG 4215; TS-B CATCH BASIN

Underground Tank Farm

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP193

BLDG 4217, TS-C RETENTION SUMPS

Underground Tank Farm

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Low Risk

Information is not sufficient to make a determination of evident or confined. Connectivity may exist between groundwater in OU-5 and the base drinking water wells located in the nearby North Base area.

Contaminants: Carbon tetrachloride 10.0 ug/L Trichloroethylene (TCE) 24.0 ug/L

See more details...

Site ID: WP194

BLDG 4223, SCRUBBER CATCH BASIN

Underground Tank Farm

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Low Risk

Information is not sufficient to make a determination of evident or confined. Connectivity may exist between groundwater in OU-5 and the base drinking water wells located in the nearby North Base area.

Contaminants: Trichloroethylene (TCE) 66.0 ug/L

Soil: Low Risk

Very low concentrations of perchlorate were detected at 10-10.5 ft bgs. Due to the depth, pathways are determined confined for all condition except excavation in the defined area. Depth to contamination in soil is beyond the exposure potential for receptors

Contaminants: Perchlorobenzene 1.8e-05 mg/kg

See more details...

Site ID: WP228

BLDG 4301 EVAPORATION POND

Underground Tank Farm

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Apr 1999

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP233

BLDG.4331 SLUDGE DRYING BEDS

Sewage Effluent Settling Ponds

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Apr 1999

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP329

TEST AREA 1-46 FORMER WASH RACK AND OXIDATION POND

Washrack

Cost

$142K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 2001

Contaminated Areas

Soil: Low Risk

Potential contaminants may be a source of exposure for airborne contamination as well as penetrating into groundwater. Note that 1,3-xylene is a substitute contaminant for TPH which is not included as a RR list contaminant but is mandated by California La Receptor access to this site is limited.

Contaminants: 1,3-Xylene 0.21 mg/kg

See more details...

Site ID: WP284

BLDG E-36, WASTE SUMP

Underground Tank Farm

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP258

BLDG 5500 MAIN BASE HOSPITAL SUMP & REMOVED & ABAN

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Dec 2001

Contaminated Areas

Soil: Low Risk

Contaminants exist in concentrations sufficient for downward migration. Note that the constituent 1,3-xylene is a substitute contaminant for TPH which is not included as a Relative Risk Contaminant but is mandated by California Law. This area is the base hospital, occupied by workers and patients that have a potential to be exposed to the contamination. Also construction workers are active in the area and could excavate to where the contamination is located.

Contaminants: 1,3-Xylene 0.03366 mg/kg

See more details...

Site ID: WP271

FORMER CONSTRUCTION STAGING AREA

Mixed Waste Area

Cost

Unknown

Final Cleanup Action

May 2004

Contaminated Areas

Soil: Low Risk

The drain outfall, grease pit, and UST suspected releases contain potential pathways through both the subsurface (leading to the groundwater) and on the surface of the terrain. 1-3 Xylene is a substitute contaminant for TPH which is not included in the RR Humans rarely frequent the site, however wildlife frequent the area. Populations of federally protected desert tortoise are in the vicinity. The potential for inhalation of contaminated fugitive dust emissions during frequent high wind conditions exists.

Contaminants: 1,3-Xylene 0.0058 mg/kg Benz(a)Anthracene 0.072 mg/kg

See more details...

Site ID: WP396

BLDG 8425 DRY WELL AND FORMER TEST STAND

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Oct 2000

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP180

TEST AREA 1-56 BLDG. 9800 CATCHMENT BASIN 1

Surface Impoundment/Lagoon

Cost

Unknown

Final Cleanup Action

Mar 2002

Contaminated Areas

Sediment (Fresh): Low Risk

Concentrations of contaminants are below levels believed to pose a threat to human health or the environment.

Contaminants: Chloroform 7.3e-06 mg/kg Tetrachloroethylene 7.0e-05 mg/kg

Sediment (Human): Low Risk

Concentrations of contaminants are below levels believed to pose a threat to human health or the environment.

Contaminants: Chloroform 7.3e-06 mg/kg Tetrachloroethylene 7.0e-05 mg/kg

See more details...

Site ID: ST378

MICROWAVE RADAR ANNEX; BALD MOUNTAIN, NV

Sewage Treatment Plant

Cost

Unknown

Final Cleanup Action

Feb 1999

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: CS453

MUD LAKE TEST SITE

Contaminated Sediments

Cost

$158K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2001

This site is under ongoing monitoring until Sep 2020

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD199

BLDG 4237, CATCH TANK

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD203

BLDG 4286, CATCH TANK

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 1998

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD239

BLDG 4410 DRAINAGE SYSTEM AND ACCUMULATION POINT

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Feb 2008

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Soil: Low Risk

The pathway for the suspected chemical contaminants is to the subsurface and groundwater. A soil sample was collected (19 Nov 97) approximately 1 foot away from the concrete drain system discharge in the gravel lot and 6 inches below the surface. The samp Humans work in the vicinity of Site 239 in Building 4410 and the Hazardous Waste Accumulation Point are currently occupied/frequented by personnel. Wildlife frequent and live in the site vicinity.

Contaminants: Lead 0.0104 mg/kg

See more details...

Site ID: SD288

BLDG E-00, FORMER TEST CORRAL

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD283

BLDG E-83, CATCH TANK

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD256

NORTH BASE STORM DRAINAGE END POINT

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Apr 1999

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SD281

BLDG E-6, FORMER VAPOR DEGREASER

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS060

BLDG 3930 HAZARDOUS WASTE ACCUMULATION AREA

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS035

LEUHMAN RIDGE ARROYO NO. 1

Spill Site Area

Cost

$73K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 1995

This site is under ongoing monitoring until Feb 2020

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS064

KEROSENE FLATS

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS036

TEST AREA 1-21 STORAGE TANK

Spill Site Area

Cost

$7.86M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2015

This site is under ongoing monitoring until Sep 2099

Contaminated Areas

Soil: Low Risk

Surface soil contamination can migrate to a point of exposure. Contamination in the bare topsoil is exposed to frequent high winds resulting in the inhalation of contaminated fugitive dust by receptors. Workers, wildlife and native vegetation have the potential to be exposed to contamination from fugitive contaminated dust.

Contaminants: Acetone 2.4e-05 mg/kg Benzo(b)Fluoranthene 0.00035 mg/kg Chrysene 0.00035 mg/kg Benzo(a)Pyrene 0.00045 mg/kg Pyrene 0.0006 mg/kg Fluoranthene 0.00081 mg/kg

See more details...

Site ID: SS042

BLDG 1015 HAZARDOUS WASTE ACCUMULATION POINT

Spill Site Area

Cost

$224K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS048

BLDG 1600 FORMER HAZARDOUS WASTE ACCUMULATION AREA

Spill Site Area

Cost

$224K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS050

BLDG 1623 FORMER HAZARDOUS WASTE ACCUMULATION AREA

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS054

BLDG 1642 FORMER DRUM STORAGE AREA

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS056

BLDG 1874 POSSIBLE FORMER DISPOSAL AREA

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS057

BLDG 1895 UNDERGROUND SEEP

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS053

BLDG 1630 SOLVENT DISPOSAL AREA

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS187

BLDG 4201; DISCHARGE AREA

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS190

BLDG 4208; FORMER DRUM STORAGE AREA

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS191

BLDG 4213; DISCHARGE SOLVENT AREA

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS227

BLDG 3900 FORMER SUBSTATION

Spill Site Area

Cost

$164K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Apr 2007

Contaminated Areas

Soil: Low Risk

Released materials have the potential to migrate to groundwater. This site is located within a developed area of main base.

Contaminants: PCBs 0.0 mg/kg

See more details...

Site ID: SS113

ABANDONED MINE SHAFT (FORMERLY 6B)

Spill Site Area

Cost

$680K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 2010

This site is under ongoing monitoring until Sep 2099

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of contaminated dust during frequent dust storms. Receptors have limited access to the site.

Contaminants: Arsenic 0.043 mg/kg

See more details...

Site ID: SS274

NORTH BASE MISCELLANEOUS, DRUM DISPOSAL AREA

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Feb 2003

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Soil: High Risk

Contamination exposed in surface soils which are subjected to frequent high winds. Connectivity exists between the groundwater in OU-10 and the base drinking water wells located in the North Base area. Federally Endangered Desert Tortoise had been identified to inhabit the area.

Contaminants: o-Xylene 1.484 mg/kg

See more details...

Site ID: SS289

BLDG E-32, REMOVED GENERATOR UNDERGROUND STORAGE TANKS

Spill Site Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 1998

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS296

BLDG 210 TRAP/SKEET RANGE & BLDG 227 SMALL ARMS FI

Small Arms Range

Cost

$191K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2004

This site is under ongoing monitoring until Sep 2020

Contaminated Areas

Soil: High Risk

Lead from bullet slugs and shot is present at all of the outdoor firing within PRL 296 from firearms practice sessions. In addition, the surface of the range inside Building 210 are contaminated with lead from bullets fired at this range, and personnel en The Rod and Gun Club is frequented by both military personnel and civilians including children.

Contaminants: Lead 16.25 mg/kg

See more details...

Site ID: SS423

BLDG E-43 LEACHFIELD

Leach Field

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS424

BLDG E-61 LEACHFIELD

Leach Field

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Surface Water (Ecological): Risk Not Evaluated

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

See more details...

Site ID: ST010

BLDG 1810 JP-4 FUEL SPILL

Underground Storage Tanks

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST011

BLDG 1724 JP-4 FUEL SPILL

Underground Storage Tanks

Cost

$205K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Medium Risk

Air Sparging from the remedial activity will ensure little potential for the contamination in the groundwater to migrate downgradient of the source. The contamination is not expected to impact a beneficial source within five years. Cal EPA considers all groundwater to be a potential domestic or agricultureal source. Connectivity exists with the Sout Base domestic production wells.

Contaminants: Chloroform 1.2 ug/L Tetrachloroethylene 2.5 ug/L Beryllium and compounds 2.6 ug/L sec-Butylbenzene 4.3 ug/L Lead 11.0 ug/L Trichloroethylene (TCE) 11.0 ug/L 1,1-Dichloroethane 13.0 ug/L Cumene 16.0 ug/L 1,3,5-Trimethylbenzene 130.0 ug/L Naphthalene 220.0 ug/L Zinc 260.0 ug/L 1,2,4-Trimethylbenzene 420.0 ug/L Ethyl benzene 660.0 ug/L Manganese and compounds 1400.0 ug/L Xylene (Mixed) 3200.0 ug/L Toluene 6500.0 ug/L Benzene 7000.0 ug/L Aluminum 39100.0 ug/L Iron 41600.0 ug/L

Soil: Medium Risk

Surface soil contamination can migrate to a point of exposure. If contamination in the bare topsoil is exposed to frequent high winds, it could result in the inhalation of contaminated fugitive dust by receptors. Bldg 1724 is occupied for approximately 10 hrs/week. Current occupants and future construction workers may be exposed through contact with contaminated surface soil, and inhalation of dust and VOCs. Ecological receptors are also present at the site.

Contaminants: Naphthalene 0.0024 mg/kg Zinc 0.208 mg/kg Ethyl benzene 2.0 mg/kg Xylene (Mixed) 7.6 mg/kg

See more details...

Site ID: ST045

BLDG 1430 REMOVED UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

$205K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Nov 1996

Contaminated Areas

Groundwater: Low Risk

Pumping from the Dual Extraction system has prevented migration of contamination in the groundwater. Contamination is not expected to impact a production well or other drinking water source.

Contaminants: Benzene 0.3 ug/L Ethyl benzene 0.45 ug/L Tetrachloroethylene 5.6 ug/L 1,2-Dichloroethane (EDC) 7.7 ug/L

See more details...

Site ID: ST235

BLDG 4400 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Soil: Medium Risk

Contaminants exist in concentrations sufficient for downward migration. Note that the constituent 1,3-xylene is a substitute contaminant for TPH which is not included as a Relative Risk Contaminant but is mandated by California Law. Contaminants may be encountered during construction activities where excavations occur.

Contaminants: Ethyl benzene 0.00029 mg/kg 1,3-Xylene 4.12 mg/kg

See more details...

Site ID: ST052

BLDG 1720 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST236

BLDG 4401 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

$123K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

Contaminated Areas

Soil: Medium Risk

Contaminants exist in concentrations sufficient for downward migration. Note that the constituent 1,3-xylene is a substitute contaminant for TPH which is not included as a Relative Risk Contaminant but is mandated by California Law. Contaminants may be encountered during construction activities where excavations occur.

Contaminants: Toluene 0.0025 mg/kg Xylene (Mixed) 0.022 mg/kg 1,3-Xylene 14.0 mg/kg

See more details...

Site ID: ST065

BLDG 1824 REMOVED UNDERGROUND STORAGE TANKSS

Underground Storage Tanks

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 1999

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: High Risk

Groundwater contamination is the same as Site 16. Migration is over 1,000 feet beyond the source. There are no known barriers to contaminant migration which could occur under the dry lake bed and then into the drinking water aquifer. Contamination is not expected to impact a beneficial source within five years. California EPA considers all groundwater to be a potential domestic or agricultural source. Connectivity exists with the South Base production wells.

Contaminants: Ethyl benzene 2500.0 ug/L cis-1,2-Dichloroethylene 2600.0 ug/L Benzene 13000.0 ug/L Toluene 18000.0 ug/L Xylene (Mixed) 21800.0 ug/L Trichloroethylene (TCE) 120000.0 ug/L

See more details...

Site ID: ST189

BLDG 4207; SEPTIC SYSTEM

Sewage Treatment Plant

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Medium Risk

Note that perchlorobenzene is being used as a substitution for perchlorate in this module based on CHF values. Information is not sufficient to make a determination of evident or confined. Connectivity may exist between groundwater in OU-5 and the base drinking water wells located in the nearby North Base area.

Contaminants: Perchlorobenzene 5.0 ug/L Carbon tetrachloride 24.0 ug/L Trichloroethylene (TCE) 150.0 ug/L

Soil: Low Risk

Very low concentrations of PCE and TCE were detected at 54.5-55 ft bgs. Whether the contamination migrated down from leachfield discharge or migrated up from groundwater (90 feet bgs) is undetermined. Depth to contamination in soil is beyond the exposure potential for receptors

Contaminants: Perchloroethylene (PCE) 1.0e-06 mg/kg Trichloroethylene (TCE) 6.5e-06 mg/kg

See more details...

Site ID: ST201

BLDG 4275, POSSIBLE RELEASE SITE

Sewage Treatment Plant

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 1998

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST225

OU8 SITE 225 PET BLDG 3512 FORMER GAS STATION, REM

Underground Storage Tanks

Cost

$235K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 2005

This site is under ongoing monitoring until Oct 2019

Contaminated Areas

Groundwater: High Risk

Contamination has not been detected at distances greater than 100 feet downgradient of the site; however, there are no known barriers to contaminant migration. Groundwater contamination has not impacted a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Ethylene Dibromide 3.8 ug/L Trichloroethylene (TCE) 11.0 ug/L Styrene 120.0 ug/L 1,2-Dichloroethane (EDC) 130.0 ug/L 1-Phenylbutane 400.0 ug/L n-Propylbenzene 430.0 ug/L Naphthalene 590.0 ug/L 1,3,5-Trimethylbenzene 1300.0 ug/L Ethyl benzene 2100.0 ug/L Benzene 2300.0 ug/L 1,2,4-Trimethylbenzene 3000.0 ug/L o-Xylene 3800.0 ug/L Methyl tert-Butyl Ether 3900.0 ug/L Toluene 4300.0 ug/L Xylene (Mixed) 11000.0 ug/L

Soil: Medium Risk

Reliable analytical data has shown that soil contamination has the potential to migrate to a point of exposure. The bare exposed topsoil contaminants are subject to frequent high winds, resulting in contaminated fugitive dust emissions. Humans work on-site, and may be impacted by VOCs and contaminant fugitive dust migrating in air. Construction workers are potentially exposed to direct contact with contaminated soil and inhalation of contaminants in air.

Contaminants: Benzene 0.54 mg/kg

See more details...

Site ID: ST246

OLD NORTH BASE FORMER UTILITY SHOP AND REMOVED UNDERGROUND STORAGE TANKS

Sewage Treatment Plant

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST255

OLD NORTH BASE REMOVED UNDERGROUND STORAGE TANKS

Sewage Treatment Plant

Cost

$123K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 1996

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST420

BLDG E-22 LEACHFIELD

Leach Field

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST421

BLDG E-23 LEACHFIELD

Leach Field

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP232

BLDG 4331 EVAPORATION POND

Underground Tank Farm

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Apr 1999

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP008

MAIN BASE STORMWATER RETENTION POND

Surface Runoff

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 1998

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Low Risk

Analytical data and observable evidence indicates that contamination has migrated 100 feet beyond the edge of the source. There are no known barriers to prevent migration under the lakebed and then into the drinking water aquifer. No production well or beneficial source will be affected. Connectivity does not exist with the base domestic wells.

Contaminants: Arsenic 0.18 ug/L Selenium 0.39 ug/L 1,1,1-Trichloroethane 1.95 ug/L Chromium 71.7 ug/L Phenol 111.0 ug/L Trichloroethylene (TCE) 4973.0 ug/L

Sediment (Fresh): Low Risk

Contaminants were detected in very low concentrations and were not a factor in MPF Contamination detected was minimal and would not affect receptors

Contaminants: Toluene 4.0e-08 mg/kg Acetone 1.9e-07 mg/kg Cadmium and compounds 7.3e-06 mg/kg Chromium 4.11e-05 mg/kg Lead 9.67e-05 mg/kg Copper and compounds 0.000128 mg/kg

Sediment (Human): Low Risk

Contaminants were detected in very low concentrations and were not a factor in MPF Contamination is minimal to affect any receptors

Contaminants: Toluene 4.0e-08 mg/kg Acetone 1.9e-07 mg/kg Cadmium and compounds 7.3e-06 mg/kg Chromium 4.11e-05 mg/kg Lead 9.67e-05 mg/kg Copper and compounds 0.000128 mg/kg

Surface Water: Low Risk

Contamination in the surface water has not migrated greater than 100 feet beyond the edge of the source and there are barriers (revetments) to contaminant migration. The surface water contamination has not yet migrated to a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Selenium 0.26 ug/L 1,1,1-Trichloroethane 1.8 ug/L

Surface Water (Fresh): Low Risk

Contamination in the surface water has not migrated greater than 100 feet beyond the edge of the source and there are barriers (revetments) to contaminant migration. The risk assessment for Site 8 indentifies a number of biologic communities that may potentially be at risk from the surface water contamination (Ref: RI Report, Main Base Flight Line Operable Unit No.1, April 1996).

Contaminants: Selenium 0.26 ug/L 1,1,1-Trichloroethane 1.8 ug/L

See more details...

Site ID: DP270

EOD RESIDUE PITS AND THERMAL TREATMENT UNIT

Open Detonation

Cost

$810K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 2004

Contaminated Areas

Soil: Low Risk

The suspected TTU and Residue Pits contain potential pathways through both the subsurface (leading to the groundwater) and on the surface of the terrain. Investigation of residue pit area has not yet been conducted. Humans rarely frequent the site, however wildlife frequent the area. Populations of federally protected desert tortoise are in the vicinity. The potential for inhalation of contaminated fugitive dust emissions during frequent high wind conditions exists.

Contaminants: Dibutyl Phthalate 0.0078 mg/kg

See more details...

Site ID: LF103

OLD SOUTH BASE SOUTHERN DISPOSAL AREA

Landfill

Cost

Unknown

Final Cleanup Action

Nov 1995

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: OT442

KNOWN EXPLOSIVE ORDNANCE DIVISION BURIAL LOCATIONS

Chemical Disposal

Cost

$1.23M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Dec 2012

This site is under ongoing monitoring until Sep 2099

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. There are no known barriers to the migration of contaminants from the soil to the groundwater. There is potential risk to humans through inhalation of airborne contaminants and through impact to drinking water wells. Receptor access to the site is limited.

Contaminants: Arsenic 0.034 mg/kg

See more details...

Site ID: SD068

TOPOGRAPHIC DEPRESSION (WOLFE AVE. AND N. MUROC DR

Surface Disposal Area

Cost

$224K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP104

OLD SOUTH BASE HOSPITAL TAR PITS

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Jun 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP286

BLDG E-84, WASTE SUMP

Underground Tank Farm

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: OT443

KNOWN EXPLOSIVE ORDNANCE DIVISION BURIAL LOCATIONS

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Aug 2004

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. There are no know barriers to contaminant migration from the soil to the groundwater. There is potential risk to humans for inhalation of airborne contaminated soil and through impact to drinking water wells. Receptor access to the site is limited.

Contaminants: Arsenic 0.029 mg/kg

See more details...

Site ID: SD202

BLDG 4284, CATCH TANK

Storm Drain

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 1998

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP033

BLDG 1423 EVAPORATION POND

Disposal Pit and Dry Well

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP172

BLDG 8595 WASTE SUMP (OUTDOOR)

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Sep 2000

Contaminated Areas

Soil: Low Risk

Limited site assessment activities have been performed and only background metals were indicated in the initial investigation. It is expected that additional assessment activities will reveal contamination at the site.

Contaminants: Tetrachloroethylene 0.37 mg/kg

See more details...

Site ID: SD015

SOUTH BASE MAINTENANCE AND TEST SUPPORT AREA

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Sep 2004

Contaminated Areas

Groundwater: Medium Risk

The groundwater pump and treatment system has confined the migration of contaminants in the groundwater and have little potential to migrate downgradient of the source. South Base water supply wells are located south of Site 15. The groundwater contamination has not yet impacted a production well or other beneficial source and is not expected to impact one within five years.

Contaminants: Chloroform 2.0 ug/L Ethylene Dibromide 3.8 ug/L 1,2-Dichloroethylene (trans) 4.1 ug/L cis-1,2-Dichloroethylene 5.0 ug/L Phenol 10.0 ug/L Methylene Chloride 15.0 ug/L N-Nitrosodi-n-propylamine 22.0 ug/L 2-Chlorophenol 38.0 ug/L Cumene 130.0 ug/L 1,3,5-Trimethylbenzene 220.0 ug/L Naphthalene 440.0 ug/L Bis(2-Ethylhexyl)Phthalate 470.0 ug/L 1,2,4-Trimethylbenzene 790.0 ug/L Trichloroethylene (TCE) 1100.0 ug/L Xylene (Mixed) 2300.0 ug/L Benzene 2500.0 ug/L Toluene 2600.0 ug/L

See more details...

Site ID: ST224

OU8 SITE 224 PET BLDG 3510 RMV'D WASTE OIL TANK, F

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 2001

Contaminated Areas

Soil: High Risk

Reliable analytical data has shown that soil contamination has the potential to migrate to a point of exposure. The bare exposed topsoil contaminants are subject to frequent high winds, resulting in contaminated fugitive dust emissions. Humans work on-site, and may be impacted by VOCs and contaminant fugitive dust migrating from Site 224. Construction workers are potentially exposed to direct contact with contaminated soil and inhalation of contaminants in air.

Contaminants: Ethyl benzene 0.0018 mg/kg Lead (Tetraethyl) 0.0084 mg/kg

See more details...

Site ID: TU234

BUILDING 4389

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Apr 2010

Contaminated Areas

Groundwater: Risk Not Evaluated

Contaminants: Benzene 150.0 ug/L

See more details...

Site ID: OT441

MUSTARD CANS (HD), PICRIC ACID

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Jan 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.042 mg/kg

See more details...

Site ID: OT447

AGENT ORANGE DISPOSAL METHOD TESTING

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Mar 2002

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.043 mg/kg

See more details...

Site ID: SD096

OLD SOUTH BASE MOTOR POOL

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Sep 2000

Contaminated Areas

Soil: Low Risk

There is little potential for contaminants in the top two feet of soil to migrate to a point of exposure. There is no expected future receptor access to surace soil contamination. The area is a remote location.

Contaminants: Chlordane 0.00044 mg/kg Beryllium and compounds 0.0014 mg/kg Cadmium and compounds 0.0263 mg/kg Arsenic 0.0314 mg/kg Lead 1.51 mg/kg

See more details...

Site ID: DP277

NORTH BASE MISCELLANEOUS, FORMER MISSILE LAUNCH SI

Disposal Pit and Dry Well

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Dec 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Soil: Low Risk

Potential contaminants may migrate to groundwater. A soil sample was collected and analyzed for organics, lead, and beryllium. All concentrations reported below detection limits. Site is located in remote area inhabited by wildlife.

Contaminants: Lead 0.0 mg/kg

See more details...

Site ID: SD041

BLDG 1210 AIRCRAFT MAINTENANCE RAMP

Surface Disposal Area

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 1996

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS273

NORTH BASE MISCELLANEOUS, SOUTH ASBESTOS WASTE PIL

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 2003

Contaminated Areas

Soil: Low Risk

There is the potential for inhalation of airborne contaminated soil during frequent blowing wind. Receptor access to the site is limited.

Contaminants: Arsenic 0.082 mg/kg

See more details...

Site ID: SS093

BLDG 360 SATELLITE ACCUMULATION POINT

Spill Site Area

Cost

Unknown

Final Cleanup Action

Nov 1995

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS414

WELL # RI 9/9-3C1

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Soil: High Risk

Soil contamination has migrated to a point of exposure. Contaminants are located inside the well which is a direct conduit to groundwater. There is no direct means for receptors to have access to soil contamination, however nearby communities use the aquifer for drinking water.

Contaminants: Arsenic 0.0365 mg/kg Antimony and compounds 0.119 mg/kg Manganese and compounds 1.95 mg/kg

See more details...

Site ID: ST059

BLDG 2860 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Aug 1995

Contaminated Areas

Groundwater: Low Risk

Contaminants in the groundwater have little potential to migrate downgradient of the source. Due to the very small amount of contamination, it is not likely that this site would ever impact a production well or other drinking water source.

Contaminants: Naphthalene 1.3 ug/L Xylene (Mixed) 2.4 ug/L Selenium 20.0 ug/L

See more details...

Site ID: ST098

BLDGS 601 AND 602 FACILITIES

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Mar 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST166

TEST AREA 2-5 WASTE DISCHARGE AREA & REMOVED WASTE

Spill Site Area

Cost

Unknown

Final Cleanup Action

Dec 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST245

OLD NORTH BASE FORMER MOTOR REPAIR SHOP AND FORMER

Sewage Treatment Plant

Cost

Unknown

Final Cleanup Action

Mar 2004

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST305

PET - TEST AREA 1-100 BLDG 8955 REMOVED FUEL OIL U

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST350

BLDG 4214 REMOVED UNDERGROUND STORAGE TANKS

Sewage Treatment Plant

Cost

Unknown

Final Cleanup Action

Aug 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: ST362

BLDG 8950 REMOVED UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Jan 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: WP077

OLD SOUTH BASE SECONDARY SEWAGE TREATMENT PLANT

Sewage Treatment Plant

Cost

Unknown

Final Cleanup Action

May 1998

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: OT433

REPORTED MUSTARD BOMBS EXPLODED HERE

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Aug 2001

Contaminated Areas

Soil: Low Risk

There is the potential for the inhalation of airborne contaminated soil during frequent high wind. Receptors have limited access to the site.

Contaminants: Arsenic 0.037 mg/kg

See more details...

Site ID: WP204

BLDG 4249, FORMER SOLVENT BURN TRAY

Disposal Pit and Dry Well

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

May 2001

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: SS039

TEST AREA 1-100 OPEN BURN AREA

Spill Site Area

Cost

Unknown

Final Cleanup Action

Oct 2005

Contaminated Areas

Soil: Low Risk

There is the potential of inhalation of wind blown contaminated soils. Receptor access to the site is limited.

Contaminants: Arsenic 0.056 mg/kg

See more details...

Site ID: WP287

BLDG E-57, FORMER POND

Underground Tank Farm

Cost

$106K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2000

This site is under ongoing monitoring until Sep 2019

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: AL502

NORTH BASE ORDNANCE RANGE (NORTH AND SOUTH AREAS)

Air to Land

Cost

Unknown

Final Cleanup Action

Apr 2010

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

See more details...

Site ID: OT426

WORLD WAR II CHEMICAL WARFARE MATERIEL STORAGE YAR

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Oct 2002

Contaminated Areas

Groundwater: Medium Risk

na The groundwater flow is towards the southeast. Contamination is not expected to impact a beneficial source or the South Base Wellfield that lies 4.4 miles to the southeast.

Contaminants: 1,2-Dichloroethane (EDC) 0.5 ug/L Toluene 1.4 ug/L n-Butylbenzene 3.5 ug/L Dibromochloromethane 7.6 ug/L Benzene 8.8 ug/L 1,3,5-Trimethylbenzene 9.5 ug/L Bromodichloromethane 15.0 ug/L 1,2,4-Trimethylbenzene 18.0 ug/L Selenium 21.0 ug/L Chloroform 23.0 ug/L Arsenic 89.0 ug/L Lead 94.0 ug/L Naphthalene 210.0 ug/L Chromium 390.0 ug/L Manganese and compounds 8700.0 ug/L Aluminum 224000.0 ug/L Iron 323000.0 ug/L

Soil: Medium Risk

Inhalation from excavation of trenches or vapors from UST This area is in the vicinity of the airmen living quarters.

Contaminants: sec-Butylbenzene 0.0003 mg/kg 1,3,5-Trimethylbenzene 0.00048 mg/kg n-Butylbenzene 0.00062 mg/kg 1,2,4-Trimethylbenzene 0.00094 mg/kg Naphthalene 0.0043 mg/kg Lead 0.006 mg/kg Arsenic 0.0163 mg/kg Vanadium 0.0549 mg/kg Chromium 0.224 mg/kg Aluminum 23.1 mg/kg Iron 28.4 mg/kg

See more details...

Site ID: SS266

PET RANGE CONTROL BLDG 9500 TO 9512, PIRA, DOWNFAL

Spill Site Area

Cost

Unknown

Final Cleanup Action

Jan 2011

Contaminated Areas

Soil: Low Risk

Reliable analytical data shows the potential for soil contamination to migrated to a point of exposure. There is poor containment of soil, no cover and favorable topography for migration. Detected TPH concentrations ranged from 179 to 4,357 mg/kg in April Humans work at the site. There is the potential for inhalation of contaminated fugitive dust emissions during frequent high wind conditions.

Contaminants: Arsenic 0.0079 mg/kg Pyrene 0.18 mg/kg Fluoranthene 0.24 mg/kg

See more details...

Site ID: ST074

OLD SOUTH BASE UNDERGROUND STORAGE TANKSS 8 TO 12

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

May 2001

Contaminated Areas

Groundwater: Medium Risk

Contaminants: 1,2,4-Trimethylbenzene 3.5 ug/L Lead 159.0 ug/L

Soil: Low Risk

There is the inhalation potential of contaminated soil. There is limited access to the site by receptors.

Contaminants: 1,3-Xylene 0.0021 mg/kg

See more details...

Site ID: ST186

PET - BLDG 8409 UNLEADED GAS UNDERGROUND STORAGE TANKSS AND ABANDONED DI

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

Sep 1999

Contaminated Areas

Soil: Medium Risk

Contaminants exist in concentrations sufficient for downward migration. Receptors may be exposed during excavation activities or if contamination migrates into groundwater.

Contaminants: Trichloroethylene (TCE) 3.3e-05 mg/kg 1,3-Xylene 42.57 mg/kg

See more details...

Update (Dec. 5, 2017): We have changed the source of the installation cost data after being notified by the Department of Defense that they erroneously reported their own cost figures on the DERP website. We are now displaying the costs the department says are the most accurate available, from the Pentagon’s DERP database that we received in a FOIA request.

Note: The risk level of a site refers to a relative risk assessment made by the DOD to prioritize the cleanup of sites.

Data: All data comes from the Defense Environmental Restoration Program and the U.S. Army Corps of Engineers, and will be released soon at the ProPublica Data Store. Read our methodology »