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NAVY INSTALLATION ID: MD317002453600

PATUXENT RIVER NAS

patuxent river, Maryland

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

See more details...

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

See more details...

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

See more details...

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

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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

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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

See more details...

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

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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

See more details...

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

See more details...

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

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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

See more details...

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

See more details...

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

See more details...

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

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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

See more details...

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

See more details...

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

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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

See more details...

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

See more details...

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

See more details...

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

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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

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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

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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

See more details...

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

See more details...

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

See more details...

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

See more details...

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

See more details...

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

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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

See more details...

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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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Site ID: UST 000005

PATUXENT RIVER NAS

Underground Storage Tanks

Cost

Unknown

Final Cleanup Action

May 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

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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

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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

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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

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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

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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

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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

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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

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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

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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

See more details...

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

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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

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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

See more details...

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

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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 »