Cost So Far
$82M
Money already spent on the evaluation and cleanup of hazardous sites.
Expected Additional Cost
$34.9M
The estimated amount of money needed for evaluation and cleanup of hazardous sites at this installation.
Expected Completion Date
2028
The date by which the DOD estimates cleanup of all sites will be complete. Long term monitoring may continue after this date.
67 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.
Land Controls & Restrictions
Many sites have been declared “clean” by the DOD but are still not safe for people. This military installation is safe only with the following conditions in place: deed restrictions, barriers. see more » annual written certification of compliance with lucs a deed restriction is documented in the parcel deed. a barrier, including but not limited to a paved surface or landfill cap, must be maintained in order to prevent exposure to contaminants, including vapor intrusion into an enclosed structure. prohibits any use other than industrial in certain areas, unless prior written approval of the navy and lead regulatory agency is obtained. prohibit residential use in certain areas, unless prior written approval of the navy and lead regulatory agency is obtained. prohibit removal or breaching of existing exposure barriers (e.g. concrete blding foundations, surfaced parking lots, and other paved surfaces), unless prior written approval of the navy and lead regulatory agency is obtained. prohibits disturbance of surface or subsurface soil due to invasive activities such as construction, unless prior written approval of the navy and lead regulatory agency is obtained. a landfill cover at the site prevents exposure to contaminated soil and reduces infiltration of groundwater. this cover will be inspected and maintained. « see less
12 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: SITE 00034
PATUXENT RIVER NAS
Surface Disposal Area
Cost
$92K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Jan 2016
This site is under ongoing monitoring until Jan 2017
Contaminated Areas
Groundwater: High Risk
Contaminants: DDT 60.0 ppb Heptachlor epoxide 70.0 ppb DDE 70.0 ppb Pyrene 100.0 ppb Fluoranthene 100.0 ppb Acenaphthene 200.0 ppb Naphthalene 200.0 ppb Diethyl phthalate 300.0 ppb Butyl benzyl phthalate 500.0 ppb Mercury and compounds (inorganic) 980.0 ppb Methylene chloride 2000.0 ppb Beryllium and compounds 3300.0 ppb Arsenic (cancer endpoint) 3400.0 ppb Dichloroethylene, 1,2- (mixture) 7000.0 ppb Acetone 7000.0 ppb Lead 10900.0 ppb Nickel and compounds 15400.0 ppb Copper and compounds 23000.0 ppb Barium and compounds 46900.0 ppb Chromium (total) 64500.0 ppb Vanadium 199000.0 ppb Aluminum 24900000.0 ppb
Surface Water (Fresh): High Risk
Contaminants: Mercury and compounds (inorganic) 110.0 ppb Lead 900.0 ppb Vanadium 2600.0 ppb Silver and compounds 4000.0 ppb Nickel and compounds 12500.0 ppb Barium and compounds 47000.0 ppb Zinc 71700.0 ppb Aluminum 690000.0 ppb
Sediment (Human): Low Risk
Contaminants: DDT 0.01 ppb DDE 0.01 ppb Fluorene 0.01 ppb Carbazole 0.01 ppb Mercury and compounds (inorganic) 0.02 ppb Acenaphthene 0.02 ppb Anthracene 0.05 ppb Indeno[1,2,3-cd]pyrene 0.09 ppb Phenanthrene 0.12 ppb Benzo[k]fluoranthene 0.13 ppb Benzo[b]fluoranthene 0.15 ppb Benzo[a]pyrene 0.15 ppb Benz[a]anthracene 0.15 ppb Chrysene 0.17 ppb Pyrene 0.26 ppb Cadmium and compounds 0.28 ppb Fluoranthene 0.31 ppb Copper and compounds 1.5 ppb Arsenic (cancer endpoint) 2.1 ppb Nickel and compounds 4.2 ppb Lead 5.4 ppb Zinc 5.7 ppb Chromium (total) 6.9 ppb Vanadium 7.7 ppb Barium and compounds 11.2 ppb Aluminum 3300.0 ppb
Soil: Low Risk
Contaminants: Acetone 0.01 ppb
Sediment (Marine): Low Risk
Contaminants: DDT 0.01 ppb DDE 0.01 ppb Fluorene 0.01 ppb Carbazole 0.01 ppb Mercury and compounds (inorganic) 0.02 ppb Acenaphthene 0.02 ppb Anthracene 0.05 ppb Indeno[1,2,3-cd]pyrene 0.09 ppb Phenanthrene 0.12 ppb Benzo[k]fluoranthene 0.13 ppb Benzo[b]fluoranthene 0.15 ppb Benzo[a]pyrene 0.15 ppb Benz[a]anthracene 0.15 ppb Chrysene 0.17 ppb Pyrene 0.26 ppb Cadmium and compounds 0.28 ppb Fluoranthene 0.31 ppb Copper and compounds 1.5 ppb Arsenic (cancer endpoint) 2.1 ppb Nickel and compounds 4.2 ppb Lead 5.4 ppb Zinc 5.7 ppb Chromium (total) 6.9 ppb Vanadium 7.7 ppb Barium and compounds 11.2 ppb Aluminum 3300.0 ppb
Surface Water (Human): Low Risk
Contaminants: Mercury and compounds (inorganic) 110.0 ppb Lead 900.0 ppb Vanadium 2600.0 ppb Silver and compounds 4000.0 ppb Nickel and compounds 12500.0 ppb Barium and compounds 47000.0 ppb Zinc 71700.0 ppb Aluminum 690000.0 ppb
Site ID: SITE 00009
PATUXENT RIVER NAS
Surface Disposal Area
Cost
$1.87M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Jul 2019
Contaminated Areas
Groundwater: High Risk
Contaminants: DDE 70.0 ppb Diethyl phthalate 300.0 ppb Beryllium and compounds 930.0 ppb Dichloroethane, 1,2- (EDC) 1000.0 ppb Silver and compounds 1700.0 ppb Tetrachloroethylene (PCE) 2000.0 ppb Lead 7900.0 ppb Dichloroethylene, 1,2- (mixture) 12000.0 ppb Dichloroethylene, 1,1- 12000.0 ppb Arsenic (cancer endpoint) 16800.0 ppb Dichloroethane, 1,1- 19000.0 ppb Vanadium 25700.0 ppb Nickel and compounds 30300.0 ppb Chromium (total) 32900.0 ppb Trichloroethane, 1,1,1- 35000.0 ppb Barium and compounds 52400.0 ppb Zinc 56400.0 ppb Trichloroethylene (TCE) 130000.0 ppb Aluminum 9870000.0 ppb
Surface Water (Fresh): Medium Risk
Contaminants: Diethyl phthalate 500.0 ppb Arsenic (cancer endpoint) 2600.0 ppb Lead 2800.0 ppb Benzene 4000.0 ppb Methyl ethyl ketone 6000.0 ppb Chromium (total) 10200.0 ppb Acetone 13000.0 ppb Barium and compounds 22500.0 ppb Zinc 29600.0 ppb
Sediment (Human): Low Risk
Contaminants: Benzene 0.01 ppb Benz[a]anthracene 0.02 ppb Di-n-octyl phthalate 0.03 ppb Chrysene 0.03 ppb DDT 0.03 ppb Diethyl phthalate 0.03 ppb Anthracene 0.04 ppb Phenanthrene 0.04 ppb Naphthalene 0.04 ppb Pyrene 0.05 ppb Fluoranthene 0.05 ppb Mercury and compounds (inorganic) 0.11 ppb Dinitrotoluene, 2,6- 0.17 ppb DDE 0.27 ppb Dinitrophenol, 2,4- 0.34 ppb Selenium 0.49 ppb Cadmium and compounds 0.56 ppb DDD 0.67 ppb Beryllium and compounds 0.89 ppb Acetone 1.8 ppb Cyanide (free) 3.6 ppb Bis(2-ethylhexyl)phthalate (DEHP) 10.0 ppb Copper and compounds 14.4 ppb Nickel and compounds 17.3 ppb Arsenic (cancer endpoint) 18.2 ppb Chromium (total) 23.1 ppb Vanadium 39.1 ppb Barium and compounds 92.0 ppb Lead 102.0 ppb Zinc 104.0 ppb Aluminum 21400.0 ppb
Soil: Low Risk
Contaminants: Acetone 0.01 ppb DDD 0.01 ppb Mercury and compounds (inorganic) 0.08 ppb Naphthalene 0.43 ppb Beryllium and compounds 0.53 ppb Carbazole 0.69 ppb Fluorene 0.86 ppb Dibenz[ah]anthracene 0.87 ppb DDT 0.96 ppb Benzo[k]fluoranthene 1.1 ppb Silver and compounds 1.1 ppb Acenaphthene 1.3 ppb Anthracene 1.5 ppb Indeno[1,2,3-cd]pyrene 1.7 ppb DDE 1.7 ppb Bis(2-ethylhexyl)phthalate (DEHP) 2.1 ppb Antimony and compounds 2.2 ppb Benzo[a]pyrene 2.8 ppb Arsenic (cancer endpoint) 3.1 ppb Benzo[b]fluoranthene 3.6 ppb Benz[a]anthracene 3.6 ppb Chrysene 4.6 ppb Copper and compounds 5.8 ppb Pyrene 6.8 ppb Nickel and compounds 7.2 ppb Phenanthrene 8.0 ppb Fluoranthene 8.2 ppb Chromium (total) 11.2 ppb Vanadium 26.7 ppb Zinc 38.4 ppb Barium and compounds 64.4 ppb Lead 68.6 ppb Aluminum 8320.0 ppb
Sediment (Marine): Low Risk
Contaminants: Benzene 0.01 ppb Benz[a]anthracene 0.02 ppb Di-n-octyl phthalate 0.03 ppb Chrysene 0.03 ppb DDT 0.03 ppb Diethyl phthalate 0.03 ppb Anthracene 0.04 ppb Phenanthrene 0.04 ppb Naphthalene 0.04 ppb Pyrene 0.05 ppb Fluoranthene 0.05 ppb Mercury and compounds (inorganic) 0.11 ppb Dinitrotoluene, 2,6- 0.17 ppb DDE 0.27 ppb Dinitrophenol, 2,4- 0.34 ppb Selenium 0.49 ppb Cadmium and compounds 0.56 ppb DDD,4,4- 0.67 ppb Beryllium and compounds 0.89 ppb Acetone 1.8 ppb Cyanide (free) 3.6 ppb Bis(2-ethylhexyl)phthalate (DEHP) 10.0 ppb Copper and compounds 14.4 ppb Nickel and compounds 17.3 ppb Arsenic (cancer endpoint) 18.2 ppb Chromium (total) 23.1 ppb Vanadium 39.1 ppb Barium and compounds 92.0 ppb Lead 102.0 ppb Zinc 104.0 ppb Aluminum 21400.0 ppb
Surface Water (Human): Low Risk
Contaminants: Diethyl phthalate 500.0 ppb Arsenic (cancer endpoint) 2600.0 ppb Lead 2800.0 ppb Benzene 4000.0 ppb Methyl ethyl ketone 6000.0 ppb Chromium (total) 10200.0 ppb Acetone 13000.0 ppb Barium and compounds 22500.0 ppb Zinc 29600.0 ppb
Site ID: SITE 00055
PATUXENT RIVER NAS
Contaminated Sediments
Cost
$714K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Dec 2016
Contaminated Areas
Sediment (Fresh): High Risk
Contaminants: Aroclor 12.0 ppb
Sediment (Human): Medium Risk
Contaminants: Aroclor 12.0 ppb
Soil: Low Risk
Contaminants: Aroclor 15.0 ppb
Site ID: SITE 00031
PATUXENT RIVER NAS
Contaminated Sediments
Cost
$1.09M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Jul 2017
Contaminated Areas
Groundwater: High Risk
Contaminants: Benzene 24000.0 ppb Vinyl chloride 99000.0 ppb cis-1,2-Dichloroethylene 120000.0 ppb Chlorobenzene 680000.0 ppb Manganese 970000.0 ppb Iron 16000000.0 ppb
Sediment (Fresh): Medium Risk
Contaminants: Acenaphthylene 100.0 ppb
Soil: Medium Risk
Contaminants: Benzo[a]pyrene 0.18 ppb Aluminum 11000.0 ppb Iron 16000.0 ppb
Surface Water (Fresh): Medium Risk
Contaminants: Lead 5000000.0 ppb
Sediment (Human): Low Risk
Contaminants: Lead 5000.0 ppb
Sediment (Marine): Low Risk
Contaminants: DDT 0.02 ppb Acenaphthene 0.05 ppb Dibutyl phthalate 0.06 ppb Anthracene 0.11 ppb Benzo[a]pyrene 0.14 ppb Fluoranthene 0.17 ppb Dibenz[ah]anthracene 0.23 ppb Butyl benzyl phthalate 0.3 ppb Mercury 0.49 ppb Phenanthrene 0.5 ppb Benz(a)anthracene 1.0 ppb Chrysene 1.3 ppb Pyrene 1.7 ppb Cadmium and compounds 25.0 ppb Copper and compounds 90.0 ppb Nickel and compounds 170.0 ppb Chromium VI and compounds 190.0 ppb Zinc 240.0 ppb Lead 560.0 ppb
Surface Water (Human): Low Risk
Contaminants: Iron 30000000.0 ppb
Surface Water (Marine): Low Risk
Contaminants: Iron 10000000.0 ppb
Site ID: UXO 000001
PATUXENT RIVER NAS
Unexploded Munitions and Ordnance Area
Cost
$1.08M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Apr 2019
Site ID: SITE 00023
PATUXENT RIVER NAS
Spill Site Area
Cost
$1.67M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Mar 2019
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Toluene 2000.0 ppb Barium and compounds 10100.0 ppb Aluminum 48500.0 ppb Zinc 81500.0 ppb Manganese 403000.0 ppb Iron 15200000.0 ppb
Site ID: SITE 00028
PATUXENT RIVER NAS
Spill Site Area
Cost
$795K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Feb 2016
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Polychlorinated biphenyls (PCBs) 480.0 ppb
Site ID: SITE 00021
PATUXENT RIVER NAS
Surface Impoundment/Lagoon
Cost
$1.88M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
May 2020
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Lead 4000.0 ppb
Site ID: UXO 000003
PATUXENT RIVER NAS
Firing Range
Cost
$13.5M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Aug 2027
This site is under ongoing monitoring until Jan 2056
Site ID: UXO 000002
PATUXENT RIVER NAS
Small Arms Range
Cost
$2.95M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
May 2021
Contaminated Areas
Groundwater: Risk Not Evaluated
Site ID: SITE 00056
PATUXENT RIVER NAS
Soil Contamination After Tank Removal
Cost
$2.14M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Sep 2018
Contaminated Areas
Soil: Low Risk
Contaminants: PCBs 39.0 ppb
Groundwater: Risk Not Evaluated
Sediment (Fresh): Risk Not Evaluated
Sediment (Human): Risk Not Evaluated
Sediment (Marine): Risk Not Evaluated
Surface Water (Human): Risk Not Evaluated
Surface Water (Marine): Risk Not Evaluated
Site ID: SITE 00039
PATUXENT RIVER NAS
Spill Site Area
Cost
$144K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Aug 2009
Contaminated Areas
Groundwater: High Risk
Contaminants: Vinyl chloride 100.0 ppb Antimony and compounds 2500.0 ppb Trichloroethylene (TCE) 18000.0 ppb Tetrachloroethylene (PCE) 20000.0 ppb Manganese 130000.0 ppb Iron 16000000.0 ppb
Sediment (Fresh): Medium Risk
Contaminants: DDT 0.03 ppb DDE,4,4- 0.07 ppb Arochlor 1260 0.09 ppb Anthracene 0.19 ppb Arochlor 1254 0.22 ppb Cadmium and compounds 3.1 ppb Nickel and compounds 30.0 ppb Chromium VI and compounds 34.0 ppb Lead 280.0 ppb Copper and compounds 290.0 ppb Zinc 400.0 ppb
Surface Water (Fresh): Medium Risk
Contaminants: Chromium VI and compounds 2500.0 ppb Lead 8900.0 ppb Zinc 32000.0 ppb Copper and compounds 44000.0 ppb Iron 2200000.0 ppb
Soil: Low Risk
Contaminants: Iron 5.6 ppb
Surface Water (Human): Low Risk
Contaminants: DDE,4,4- 20.0 ppb Dieldrin 80.0 ppb DDD,4,4- 80.0 ppb Mercury 240.0 ppb
55 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: SITE 00044
PATUXENT RIVER NAS
Landfill
Cost
Unknown
Final Cleanup Action
Mar 2011
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 300.0 ppb
Site ID: SITE 00045
PATUXENT RIVER NAS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Jul 2004
Contaminated Areas
Soil: Medium Risk
Contaminants: Manganese and compounds 5500.0 ppb
Site ID: SITE 00049
PATUXENT RIVER NAS
Contaminated Soil Piles
Cost
Unknown
Final Cleanup Action
Jan 2002
Contaminated Areas
Soil: High Risk
Contaminants: Lead 2000.0 ppb
Site ID: UST 000001
PATUXENT RIVER NAS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Feb 2002
Contaminated Areas
Groundwater: High Risk
Contaminants: Ethylbenzene 960000.0 ppb Benzene 2200000.0 ppb Xylene (mixed) 4300000.0 ppb Toluene 4590000.0 ppb
Site ID: UST 000009
PATUXENT RIVER NAS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Sep 2001
Contaminated Areas
Groundwater: High Risk
Contaminants: Ethyl benzene 31000.0 ppb Benzene 43000.0 ppb Naphthalene 250000.0 ppb
Site ID: SITE 00017
PATUXENT RIVER NAS
Contaminated Sediments
Cost
$16K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Aug 2009
This site is under ongoing monitoring until Nov 2017
Contaminated Areas
Groundwater: High Risk
Contaminants: DDD 90.0 ppb DDT 170.0 ppb Endrin 370.0 ppb Dieldrin 1900.0 ppb Lead 17500.0 ppb
Surface Water (Fresh): High Risk
Contaminants: Dieldrin 20.0 ppb DDD 50.0 ppb
Soil: Medium Risk
Contaminants: Chlordane 0.19 ppb Lead 0.29 ppb Aldrin 26.0 ppb Dieldrin 29.0 ppb DDE 76.0 ppb DDD 210.0 ppb DDT 5000.0 ppb
Sediment (Human): Low Risk
Contaminants: Dieldrin 0.03 ppb Lead 0.37 ppb DDE 2.4 ppb DDT 4.9 ppb DDD 22.0 ppb
Sediment (Marine): Low Risk
Contaminants: Dieldrin 0.03 ppb Lead 0.37 ppb DDE 2.4 ppb DDT 4.9 ppb DDD,4,4- 22.0 ppb
Surface Water (Human): Low Risk
Contaminants: Dieldrin 20.0 ppb DDD 50.0 ppb
Site ID: SITE 00002
PATUXENT RIVER NAS
Disposal Pit and Dry Well
Cost
Unknown
Final Cleanup Action
Sep 2015
Contaminated Areas
Sediment (Human): Medium Risk
Contaminants: DDD 0.07 ppb Pentachlorophenol 0.11 ppb DDE 0.14 ppb Polychlorinated biphenyls (PCBs) 0.15 ppb Butyl benzyl phthalate 0.26 ppb Benz[a]anthracene 0.29 ppb Phenanthrene 0.36 ppb Benzo[a]pyrene 0.46 ppb Benzo[k]fluoranthene 0.55 ppb DDT 0.59 ppb Benzo[b]fluoranthene 0.63 ppb Chrysene 0.63 ppb Pyrene 0.8 ppb Fluoranthene 0.93 ppb Cadmium and compounds 5.6 ppb Copper and compounds 32.3 ppb Chromium (total) 34.8 ppb Vanadium 49.6 ppb Lead 136.0 ppb Zinc 187.0 ppb Aluminum 20100.0 ppb
Sediment (Marine): Medium Risk
Contaminants: DDD,4,4- 0.07 ppb Pentachlorophenol 0.11 ppb DDE 0.14 ppb Butyl benzyl phthalate 0.26 ppb Benz[a]anthracene 0.29 ppb Phenanthrene 0.36 ppb Benzo[a]pyrene 0.46 ppb Benzo[k]fluoranthene 0.55 ppb DDT 0.59 ppb Benzo[b]fluoranthene 0.63 ppb Chrysene 0.63 ppb Pyrene 0.8 ppb Fluoranthene 0.93 ppb Cadmium and compounds 5.6 ppb Copper and compounds 32.3 ppb Chromium (total) 34.8 ppb Vanadium 49.6 ppb Lead 136.0 ppb Zinc 187.0 ppb Aluminum 20100.0 ppb
Site ID: SITE 00003
PATUXENT RIVER NAS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 2014
Contaminated Areas
Sediment (Fresh): Medium Risk
Contaminants: DDT 0.04 ppb DDE,4,4- 0.19 ppb DDD,4,4- 0.52 ppb Chromium VI and compounds 12.0 ppb
Soil: Low Risk
Contaminants: Benzo[a]pyrene 0.22 ppb DDD,4,4- 3.2 ppb Lead 500.0 ppb Aluminum 9300.0 ppb Iron 12000.0 ppb
Surface Water (Fresh): Low Risk
Contaminants: Manganese 54000.0 ppb
Surface Water (Marine): Low Risk
Contaminants: Manganese and compounds 54000.0 ppb
Groundwater: Risk Not Evaluated
Site ID: SITE 00004
PATUXENT RIVER NAS
Landfill
Cost
Unknown
Final Cleanup Action
Nov 2013
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Trichloroethylene (TCE) 5000.0 ppb
Soil: Low Risk
Contaminants: Lead 1200.0 ppb
Site ID: SITE 00005
PATUXENT RIVER NAS
Landfill
Cost
Unknown
Final Cleanup Action
Aug 2012
Contaminated Areas
Soil: Medium Risk
Contaminants: DDT 0.01 ppb DDD 0.01 ppb Anthracene 0.19 ppb DDE 0.51 ppb Indeno(1,2,3-cd)Pyrene 0.75 ppb Benzo(a)Pyrene 0.91 ppb Chrysene 1.5 ppb
Groundwater: Risk Not Evaluated
Site ID: SITE 00006
PATUXENT RIVER NAS
Contaminated Sediments
Cost
Unknown
Final Cleanup Action
Sep 2008
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Dichloroethane, 1,2- (EDC) 1000.0 ppb Toluene 1000.0 ppb Bis(2-ethylhexyl)phthalate (DEHP) 2000.0 ppb Trichloroethane, 1,1,1- 3000.0 ppb Lead 5700.0 ppb Methyl ethyl ketone 18000.0 ppb Trichloroethylene (TCE) 52000.0 ppb Zinc 93700.0 ppb Aluminum 992000.0 ppb
Soil: Low Risk
Contaminants: Toluene 0.01 ppb Xylene (mixed) 0.01 ppb Naphthalene 0.05 ppb Anthracene 0.1 ppb Dibenz[ah]anthracene 0.21 ppb Phenanthrene 0.36 ppb Benz[a]anthracene 0.43 ppb Benzo[k]fluoranthene 0.48 ppb Indeno[1,2,3-cd]pyrene 0.49 ppb Benzo[b]fluoranthene 0.56 ppb Mercury and compounds (inorganic) 0.6 ppb Benzo[a]pyrene 0.61 ppb Chrysene 0.7 ppb Bis(2-ethylhexyl)phthalate (DEHP) 0.82 ppb Tetrachloroethane, 1,1,2,2- 1.0 ppb Fluoranthene 1.1 ppb Pyrene 1.3 ppb Cadmium and compounds 3.6 ppb Arsenic (cancer endpoint) 10.6 ppb Nickel and compounds 13.1 ppb Silver and compounds 17.7 ppb Vanadium 21.3 ppb Chromium (total) 29.2 ppb Zinc 135.0 ppb Copper and compounds 172.0 ppb Lead 200.0 ppb Barium and compounds 232.0 ppb Aluminum 22200.0 ppb
Site ID: SITE 00007
PATUXENT RIVER NAS
Underground Tank Farm
Cost
Unknown
Final Cleanup Action
Jan 1985
Site ID: SITE 00013
PATUXENT RIVER NAS
Contaminated Buildings
Cost
Unknown
Final Cleanup Action
Aug 2002
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Polychlorinated biphenyls (PCBs) 700.0 ppb
Site ID: SITE 00014
PATUXENT RIVER NAS
Burn Area
Cost
Unknown
Final Cleanup Action
May 2007
Contaminated Areas
Groundwater: High Risk
Contaminants: Antimony and compounds 30000.0 ppb Benzenecarbinol 50000.0 ppb Benzaldehyde 50000.0 ppb Benzene, p-dichloro- 50000.0 ppb 1-Amino-4-Chlorobenzene 50000.0 ppb
Site ID: SITE 00015
PATUXENT RIVER NAS
Contaminated Sediments
Cost
Unknown
Final Cleanup Action
Jul 2003
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 50.6 ppb
Site ID: SITE 00020
PATUXENT RIVER NAS
Surface Impoundment/Lagoon
Cost
Unknown
Final Cleanup Action
May 2006
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Lead 5000.0 ppb
Site ID: SITE 00022
PATUXENT RIVER NAS
Drainage Ditch
Cost
Unknown
Final Cleanup Action
Jun 2005
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 50.6 ppb
Site ID: SITE 00025
PATUXENT RIVER NAS
Spill Site Area
Cost
Unknown
Final Cleanup Action
Apr 2006
Contaminated Areas
Groundwater: High Risk
Contaminants: Lead 48000.0 ppb
Site ID: SITE 00027
PATUXENT RIVER NAS
Building Demolition/Debris Removal
Cost
Unknown
Final Cleanup Action
Mar 2003
Contaminated Areas
Groundwater: High Risk
Contaminants: Lead 10000.0 ppb
Site ID: SITE 00029
PATUXENT RIVER NAS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 2007
Contaminated Areas
Soil: High Risk
Contaminants: Arsenic (cancer) 8.7 ppb Cadmium and compounds 14.7 ppb Nickel and compounds 24.1 ppb Chromium VI and compounds 49.8 ppb Copper and compounds 68.5 ppb Zinc 270.0 ppb Lead 631.0 ppb
Groundwater: Medium Risk
Contaminants: Toluene 1000.0 ppb Chromium VI and compounds 8000.0 ppb Arsenic (cancer) 10000.0 ppb Methyl ethyl ketone 26000.0 ppb Zinc cyanide 70000.0 ppb
Site ID: SITE 00030
PATUXENT RIVER NAS
Contaminated Sediments
Cost
Unknown
Final Cleanup Action
Jun 2006
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Lead 4000.0 ppb
Soil: Medium Risk
Contaminants: Lead 500.0 ppb
Site ID: SITE 00011
PATUXENT RIVER NAS
Landfill
Cost
$3.42M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Sep 2007
This site is under ongoing monitoring until May 2045
Contaminated Areas
Groundwater: High Risk
Contaminants: Mercury and compounds (inorganic) 200.0 ppb Beryllium and compounds 990.0 ppb Toluene 1000.0 ppb Tetrachloroethylene (PCE) 1000.0 ppb Trichloroethylene (TCE) 1000.0 ppb Tetrachloroethane, 1,1,2,2- 1000.0 ppb Selenium 1300.0 ppb Antimony and compounds 1800.0 ppb Chloromethane 2000.0 ppb Ethyl chloride (Chloroethane) 2000.0 ppb Ethylbenzene 3000.0 ppb Dichloroethane, 1,2- (EDC) 3000.0 ppb Dichloroethylene, 1,2- (mixture) 3000.0 ppb Cadmium and compounds 3400.0 ppb Diethyl phthalate 4000.0 ppb Lead 4400.0 ppb Benzoic acid 6000.0 ppb Vinyl chloride 6000.0 ppb Dichlorobenzene, 1,4- 7000.0 ppb Chloroform 7000.0 ppb Benzene 10000.0 ppb Chromium (total) 11900.0 ppb Dichlorobenzene, 1,2- 13000.0 ppb Silver and compounds 13400.0 ppb Bis(2-ethylhexyl)phthalate (DEHP) 14000.0 ppb Arsenic (cancer endpoint) 17700.0 ppb Dichloroethane, 1,1- 18000.0 ppb Copper and compounds 20500.0 ppb Nickel and compounds 21100.0 ppb Carbon disulfide 36000.0 ppb Methyl ethyl ketone 75000.0 ppb Barium and compounds 95300.0 ppb Zinc 252000.0 ppb Aluminum 2000000.0 ppb
Surface Water (Fresh): High Risk
Contaminants: Beryllium and compounds 790.0 ppb Toluene 1000.0 ppb Arsenic (cancer endpoint) 1000.0 ppb Methylene chloride 2000.0 ppb Bis(2-ethylhexyl)phthalate (DEHP) 3000.0 ppb Dichloroethane, 1,1- 4000.0 ppb Lead 4600.0 ppb Chlorobenzene 5000.0 ppb Copper and compounds 9800.0 ppb Chromium (total) 10600.0 ppb Trichloroethylene (TCE) 11000.0 ppb Dichloroethylene, 1,2- (mixture) 15000.0 ppb Methyl ethyl ketone 17000.0 ppb Methylphenol, 4- 23000.0 ppb Nickel and compounds 34900.0 ppb Carbon disulfide 48000.0 ppb Barium and compounds 60500.0 ppb Tetrachloroethylene (PCE) 63000.0 ppb Zinc 228000.0 ppb Aluminum 562000.0 ppb
Surface Water (Human): Medium Risk
Contaminants: Beryllium and compounds 790.0 ppb Toluene 1000.0 ppb Arsenic (cancer endpoint) 1000.0 ppb Methylene chloride 2000.0 ppb Bis(2-ethylhexyl)phthalate (DEHP) 3000.0 ppb Dichloroethane, 1,1- 4000.0 ppb Lead 4600.0 ppb Chlorobenzene 5000.0 ppb Copper and compounds 9800.0 ppb Chromium (total) 10600.0 ppb Trichloroethylene (TCE) 11000.0 ppb Dichloroethylene, 1,2- (mixture) 15000.0 ppb Methyl ethyl ketone 17000.0 ppb Methylphenol, 4- 23000.0 ppb Nickel and compounds 34900.0 ppb Carbon disulfide 48000.0 ppb Barium and compounds 60500.0 ppb Tetrachloroethylene (PCE) 63000.0 ppb Zinc 228000.0 ppb Aluminum 562000.0 ppb
Site ID: SITE 00012
PATUXENT RIVER NAS
Landfill
Cost
$3.39M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Sep 2008
This site is under ongoing monitoring until Sep 2045
Contaminated Areas
Groundwater: High Risk
Contaminants: Lead 10000.0 ppb
Site ID: SITE 00035
PATUXENT RIVER NAS
Spill Site Area
Cost
Unknown
Final Cleanup Action
Aug 2002
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 10.0 ppb
Site ID: SITE 00037
PATUXENT RIVER NAS
Contaminated Soil Piles
Cost
Unknown
Final Cleanup Action
Mar 2004
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 500.0 ppb
Site ID: SITE 00038
PATUXENT RIVER NAS
Storage Area
Cost
Unknown
Final Cleanup Action
Aug 2002
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 400.0 ppb
Site ID: SITE 00040
PATUXENT RIVER NAS
Landfill
Cost
Unknown
Final Cleanup Action
Jun 2006
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 500.0 ppb
Site ID: SITE 00041
PATUXENT RIVER NAS
Burn Area
Cost
Unknown
Final Cleanup Action
Sep 2005
Contaminated Areas
Groundwater: High Risk
Contaminants: Benzene 1000.0 ppb Tetrachloroethylene (PCE) 3000.0 ppb Thallium 3700.0 ppb Chromium VI and compounds 36000.0 ppb Naphthalene 220000.0 ppb Manganese and compounds 520000.0 ppb Iron 47000000.0 ppb
Soil: Medium Risk
Contaminants: Arsenic (noncancer) 3.6 ppb Iron 10000.0 ppb
Site ID: SITE 00042
PATUXENT RIVER NAS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Aug 2002
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 500.0 ppb
Surface Water (Human): Medium Risk
Contaminants: Lead 10000.0 ppb
Site ID: SITE 00043
PATUXENT RIVER NAS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 2008
Contaminated Areas
Soil: Medium Risk
Contaminants: 1,1,1-Trichloroethane 10.0 ppb
Site ID: SITE 00046
PATUXENT RIVER NAS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 2005
Contaminated Areas
Soil: Medium Risk
Contaminants: Trichloroethane, 1,1,1- 20.0 ppb
Site ID: SITE 00047
PATUXENT RIVER NAS
Disposal Pit and Dry Well
Cost
Unknown
Final Cleanup Action
Sep 2006
Contaminated Areas
Groundwater: High Risk
Contaminants: Cadmium and compounds 4300.0 ppb Tetrachloroethylene (PCE) 13000.0 ppb Manganese 320000.0 ppb
Sediment (Human): Medium Risk
Contaminants: Dieldrin 0.04 ppb Beryllium and compounds 0.5 ppb Arochlor 1254 3.4 ppb Cadmium and compounds 10.0 ppb Chromium VI and compounds 160.0 ppb Lead 520.0 ppb Copper and compounds 2700.0 ppb Aluminum 12000.0 ppb Iron 26000.0 ppb
Soil: Low Risk
Contaminants: Aluminum 9300.0 ppb Iron 11000.0 ppb
Surface Water (Human): Low Risk
Contaminants: Arsenic (noncancer) 2400.0 ppb Thallium 2800.0 ppb
Site ID: SITE 00048
PATUXENT RIVER NAS
Contaminated Soil Piles
Cost
Unknown
Final Cleanup Action
Apr 2003
Contaminated Areas
Soil: High Risk
Contaminants: Lead 2000.0 ppb
Site ID: SITE 00050
PATUXENT RIVER NAS
Contaminated Soil Piles
Cost
Unknown
Final Cleanup Action
Sep 2006
Contaminated Areas
Soil: High Risk
Contaminants: Lead 2000.0 ppb
Site ID: SITE 00051
PATUXENT RIVER NAS
Pistol Range
Cost
Unknown
Final Cleanup Action
Sep 1986
Contaminated Areas
Soil: High Risk
Contaminants: Lead 2000.0 ppb
Site ID: SITE 00052
PATUXENT RIVER NAS
Contaminated Soil Piles
Cost
Unknown
Final Cleanup Action
Jun 2004
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 348.0 ppb Chromium VI and compounds 2000.0 ppb
Site ID: SITE 00053
PATUXENT RIVER NAS
Spill Site Area
Cost
Unknown
Final Cleanup Action
Aug 2002
Contaminated Areas
Soil: Medium Risk
Contaminants: 1,1,1-Trichloroethane 300.0 ppb
Site ID: UST 000003
PATUXENT RIVER NAS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
May 1998
This site is under ongoing monitoring until Oct 2004
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Ethylbenzene 3980.0 ppb Toluene 10000.0 ppb Benzene 13400.0 ppb Naphthalene 41500.0 ppb
Soil: Low Risk
Contaminants: Naphthalene 9780.0 ppb
Site ID: UST 000005
PATUXENT RIVER NAS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
May 1997
Contaminated Areas
Groundwater: Risk Not Evaluated
Site ID: UST 000006
PATUXENT RIVER NAS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Sep 2001
This site is under ongoing monitoring until Jul 2012
Contaminated Areas
Groundwater: High Risk
Contaminants: Chloroform 2000.0 ppb Methylene chloride 2090.0 ppb Dichloroethane, 1,2- (EDC) 240000.0 ppb Ethylbenzene 15000000.0 ppb Trichloroethylene (TCE) 21000000.0 ppb Xylene (mixed) 128000000.0 ppb Benzene 320000000.0 ppb Toluene 370000000.0 ppb Methyl tertbutyl ether (MTBE) 430000000.0 ppb
Site ID: UST 000007
PATUXENT RIVER NAS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Feb 2000
Contaminated Areas
Groundwater: High Risk
Contaminants: Benzene 68000.0 ppb Ethyl benzene 310000.0 ppb Naphthalene 910000.0 ppb
Site ID: UST 000008
PATUXENT RIVER NAS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Mar 2002
Contaminated Areas
Groundwater: High Risk
Contaminants: Ethyl benzene 31000.0 ppb Benzene 43000.0 ppb Naphthalene 250000.0 ppb
Site ID: UST 000010
PATUXENT RIVER NAS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Dec 2001
Contaminated Areas
Groundwater: High Risk
Contaminants: Benzene 128000.0 ppb Naphthalene 330000.0 ppb Ethyl benzene 830000.0 ppb
Site ID: UST 000004
PATUXENT RIVER NAS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Jan 2000
Contaminated Areas
Groundwater: High Risk
Contaminants: Methylphenol, 4- 43000.0 ppb Diethyl phthalate 69000.0 ppb Naphthalene 234000.0 ppb
Site ID: SITE 00016
PATUXENT RIVER NAS
Contaminated Sediments
Cost
Unknown
Final Cleanup Action
Jun 2005
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 50.6 ppb
Site ID: UST 000002
PATUXENT RIVER NAS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
May 1998
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Toluene 7000.0 ppb Xylene 10000.0 ppb Benzene 20000.0 ppb Ethylbenzene 42000.0 ppb Naphthalene 45000.0 ppb
Soil: Low Risk
Contaminants: Naphthalene 45.0 ppb
Site ID: SITE 00024
PATUXENT RIVER NAS
Disposal Pit and Dry Well
Cost
Unknown
Final Cleanup Action
Sep 2007
Contaminated Areas
Groundwater: High Risk
Contaminants: Benzene 1000.0 ppb Chloromethane 1000.0 ppb Toluene 2000.0 ppb Chromium (total) 14300.0 ppb Trichloroethylene (TCE) 16000.0 ppb Cyanide (free) 18000.0 ppb Nickel and compounds 40700.0 ppb Cadmium and compounds 52700.0 ppb Copper and compounds 53800.0 ppb Lead 132000.0 ppb Zinc 180000.0 ppb
Surface Water (Fresh): High Risk
Contaminants: Chromium (total) 9000.0 ppb Zinc 20000.0 ppb Copper and compounds 70000.0 ppb
Sediment (Human): Low Risk
Contaminants: Xylene (mixed) 0.01 ppb Toluene 0.02 ppb Dichloroethylene, 1,2- (mixture) 0.05 ppb Carbon disulfide 0.14 ppb Lead 10.0 ppb Vanadium 23.1 ppb Chromium (total) 38.9 ppb Zinc 41.8 ppb Barium and compounds 94.4 ppb Aluminum 13500.0 ppb
Sediment (Marine): Low Risk
Contaminants: Xylene (mixed) 0.01 ppb Toluene 0.02 ppb Dichloroethylene, 1,2- (mixture) 0.05 ppb Carbon disulfide 0.14 ppb Lead 10.0 ppb Vanadium 23.1 ppb Chromium (total) 38.9 ppb Zinc 41.8 ppb Barium and compounds 94.4 ppb Aluminum 13500.0 ppb
Surface Water (Human): Low Risk
Contaminants: Chromium (total) 9000.0 ppb Zinc 20000.0 ppb Copper and compounds 70000.0 ppb
Site ID: SITE 00054
PATUXENT RIVER NAS
Spill Site Area
Cost
Unknown
Final Cleanup Action
Sep 1985
Site ID: SITE 00019
PATUXENT RIVER NAS
Contaminated Sediments
Cost
Unknown
Final Cleanup Action
Jun 2005
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 50.6 ppb
Site ID: SITE 00001
PATUXENT RIVER NAS
Landfill
Cost
$3.63M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Sep 2005
This site is under ongoing monitoring until Jul 2045
Contaminated Areas
Groundwater: High Risk
Contaminants: Chloromethane 1000.0 ppb Trichlorofluoromethane 1000.0 ppb Tetrachloroethane, 1,1,2,2- 1000.0 ppb Toluene 2000.0 ppb Xylene (mixed) 2000.0 ppb Dichloroethylene, 1,1- 2000.0 ppb Mercury and compounds (inorganic) 2100.0 ppb Phenol 3000.0 ppb Carbon disulfide 4000.0 ppb Naphthalene 5000.0 ppb Dichloroethane, 1,2- (EDC) 6000.0 ppb Trichloroethylene (TCE) 7300.0 ppb Cadmium and compounds 25500.0 ppb Lead 30000.0 ppb Vinyl chloride 30000.0 ppb Dichloroethylene, 1,2- (mixture) 32000.0 ppb Dichloroethane, 1,1- 32000.0 ppb Arsenic (cancer endpoint) 45000.0 ppb Methyl ethyl ketone 52000.0 ppb Copper and compounds 52300.0 ppb Ethyl chloride (Chloroethane) 61000.0 ppb Bis(2-ethylhexyl)phthalate (DEHP) 62000.0 ppb Nickel and compounds 85700.0 ppb Antimony and compounds 90200.0 ppb Chlorobenzene 110000.0 ppb Zinc 139000.0 ppb Barium and compounds 238000.0 ppb Aluminum 317000.0 ppb
Soil: Medium Risk
Contaminants: Xylene (mixed) 0.01 ppb Acetone 0.02 ppb DDE 0.07 ppb DDT 0.24 ppb Acenaphthene 0.42 ppb Fluorene 0.48 ppb Carbazole 1.0 ppb Anthracene 1.5 ppb Dibenz[ah]anthracene 1.8 ppb Arsenic (cancer endpoint) 2.5 ppb Benzo[k]fluoranthene 4.6 ppb Indeno[1,2,3-cd]pyrene 4.9 ppb Chromium (total) 5.0 ppb Phenanthrene 5.6 ppb Benz[a]anthracene 7.6 ppb Benzo[a]pyrene 8.1 ppb Benzo[b]fluoranthene 8.3 ppb Chrysene 8.6 ppb Fluoranthene 10.0 ppb Pyrene 11.0 ppb Copper and compounds 20.0 ppb Vanadium 22.9 ppb Lead 33.1 ppb Zinc 148.0 ppb Aluminum 1610.0 ppb
Site ID: SITE 00008
PATUXENT RIVER NAS
Contaminated Sediments
Cost
Unknown
Final Cleanup Action
Nov 1986
Site ID: SITE 00010
PATUXENT RIVER NAS
Unexploded Munitions and Ordnance Area
Cost
Unknown
Final Cleanup Action
Jul 1991
Site ID: SITE 00018
PATUXENT RIVER NAS
Drainage Ditch
Cost
Unknown
Final Cleanup Action
Mar 2006
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Dichloroethane, 1,2- (EDC) 15000.0 ppb
Site ID: SITE 00026
PATUXENT RIVER NAS
Landfill
Cost
Unknown
Final Cleanup Action
Jan 2007
This site is under ongoing monitoring until Feb 2009
Contaminated Areas
Groundwater: High Risk
Contaminants: Lead 8000.0 ppb
Site ID: SITE 00036
PATUXENT RIVER NAS
Spill Site Area
Cost
Unknown
Final Cleanup Action
Aug 2002
Contaminated Areas
Soil: Medium Risk
Contaminants: Lead 300.0 ppb
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 »