Cost So Far
$77.5M
Money already spent on the evaluation and cleanup of hazardous sites.
Expected Additional Cost
$51.4M
The estimated amount of money needed for evaluation and cleanup of hazardous sites at this installation.
Expected Completion Date
2048
The date by which the DOD estimates cleanup of all sites will be complete. Long term monitoring may continue after this date.
57 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: warning signs, barriers, signs. see more » 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. incorporation of lucs into a base master plan a warning sign is in place surrounding the area prohibit residential use in certain areas, 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. groundwater use restricted. « see less
18 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 00008
YORKTOWN NWS
Surface Disposal Area
Cost
$4.05M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Oct 2020
Contaminated Areas
Groundwater: High Risk
Contaminants: Beryllium and compounds 4500.0 ppb Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 13000.0 ppb Trichloroethylene (TCE) 15000.0 ppb Lead 20200.0 ppb RDX (Cyclonite) 64000.0 ppb Chromium (total) 163000.0 ppb Zinc 216000.0 ppb Aluminum 27700000.0 ppb
Sediment (Marine): Medium Risk
Contaminants: Mercury and compounds (inorganic) 2.0 ppb Lead 38.7 ppb Zinc 125.0 ppb
Surface Water (Human): Medium Risk
Contaminants: Copper and compounds 6100.0 ppb Nickel and compounds 21300.0 ppb Lead 31500.0 ppb
Soil: Low Risk
Contaminants: Vinyl chloride 0.01 ppb Trichloroethylene (TCE) 0.03 ppb Dichloroethylene, 1,2- (mixture) 0.09 ppb Arsenic (cancer endpoint) 2.6 ppb Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 2.8 ppb RDX (Cyclonite) 3.4 ppb Nickel and compounds 12.4 ppb Copper and compounds 20.6 ppb Vanadium 29.8 ppb Lead 62.7 ppb Zinc 165.0 ppb
Site ID: SITE 00026
YORKTOWN NWS
Soil Contamination After Tank Removal
Cost
$2.57M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Oct 2018
Contaminated Areas
Soil: High Risk
Contaminants: Arsenic 3.7 ppb Cadmium and compounds 10.8 ppb Cobalt 11.9 ppb Dibenz[ah]anthracene 27.0 ppb Chromium (III) 34.4 ppb Benzo(a)Pyrene 140.0 ppb Manganese and compounds 473.0 ppb Benzo(b)Fluoranthene 560.0 ppb Aluminum 15600.0 ppb Iron 30600.0 ppb
Groundwater: Low Risk
Contaminants: Chloroform 1700.0 ppb Perchlorate 2050.0 ppb 1,1-Dichloroethane 7100.0 ppb 1,4-Dioxane 19200.0 ppb
Site ID: SWMU 00006
YORKTOWN NWS
Surface Disposal Area
Cost
$1.73M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Sep 2017
Contaminated Areas
Groundwater: High Risk
Contaminants: Nitrobenzene 3200.0 ppb Thallium 5300.0 ppb Beryllium and compounds 7800.0 ppb 1,2-Dichloroethane (EDC) 10000.0 ppb Cadmium and compounds 27100.0 ppb Lead 113000.0 ppb Nickel and compounds 237000.0 ppb Arsenic (cancer) 436000.0 ppb Barium and compounds 474000.0 ppb Chromium VI and compounds 500000.0 ppb Vanadium 603000.0 ppb Manganese and compounds 1690000.0 ppb Aluminum 98800000.0 ppb
Soil: High Risk
Contaminants: Dieldrin 0.08 ppb Benzo[a]pyrene 0.15 ppb Beryllium and compounds 0.36 ppb Chlordane, alpha- (2) 1.7 ppb Arsenic (cancer) 3.0 ppb Arochlor 1016 4.2 ppb Cadmium and compounds 4.3 ppb Mercury and compounds (inorganic) 4.7 ppb Antimony and compounds 11.9 ppb Manganese and compounds 221.0 ppb Aluminum 12600.0 ppb
Site ID: SITE 00007
YORKTOWN NWS
Surface Disposal Area
Cost
$4.04M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Oct 2018
Contaminated Areas
Groundwater: High Risk
Contaminants: Mercury and compounds (inorganic) 230.0 ppb Nitrobenzene 590.0 ppb Trinitrobenzene, 1,3,5- 8500.0 ppb Cadmium and compounds 12600.0 ppb Beryllium and compounds 18000.0 ppb Dinitrotoluene, 2,6- 19000.0 ppb Dichloroethane, 1,1- 58000.0 ppb Lead 61000.0 ppb Dichloroethylene, 1,1- 160000.0 ppb Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 190000.0 ppb Nickel and compounds 328000.0 ppb Chromium (total) 636000.0 ppb Zinc 985000.0 ppb RDX (Cyclonite) 2300000.0 ppb Trichloroethane, 1,1,1- 9900000.0 ppb Aluminum 126000000.0 ppb
Sediment (Marine): Medium Risk
Contaminants: Cadmium and compounds 5.8 ppb Antimony and compounds 30.4 ppb Copper and compounds 79.4 ppb Lead 95.3 ppb Zinc 403.0 ppb
Surface Water (Human): Medium Risk
Contaminants: Mercury and compounds (inorganic) 240.0 ppb Trichloroethane, 1,1,1- 15000.0 ppb Nickel and compounds 47100.0 ppb Chromium (total) 77800.0 ppb Lead 114000.0 ppb Copper and compounds 137000.0 ppb Dichloroethane, 1,1- 240000.0 ppb Zinc 590000.0 ppb
Soil: Low Risk
Contaminants: Bis(2-ethylhexyl)phthalate (DEHP) 0.53 ppb Beryllium and compounds 0.8 ppb Arsenic (cancer endpoint) 2.1 ppb Nickel and compounds 9.1 ppb Chromium (total) 13.6 ppb Zinc 31.9 ppb
Site ID: SITE 00004
YORKTOWN NWS
Landfill
Cost
$3.18M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Oct 2018
Contaminated Areas
Groundwater: High Risk
Contaminants: Mercury and compounds (inorganic) 190.0 ppb Dichloroethylene, 1,1- 1000.0 ppb Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 1100.0 ppb Trichloroethane, 1,1,1- 2000.0 ppb RDX (Cyclonite) 3300.0 ppb Cadmium and compounds 5200.0 ppb Trichloroethylene (TCE) 17000.0 ppb Dichloroethylene, 1,2- (mixture) 20000.0 ppb Beryllium and compounds 20200.0 ppb Arsenic (cancer endpoint) 20600.0 ppb Antimony and compounds 45700.0 ppb Lead 49200.0 ppb Chromium (total) 203000.0 ppb Nickel and compounds 209000.0 ppb Barium and compounds 287000.0 ppb Zinc 735000.0 ppb Aluminum 70800000.0 ppb
Sediment (Marine): High Risk
Contaminants: DDT 0.01 ppb DDE 0.06 ppb Mercury and compounds (inorganic) 0.34 ppb DDD,4,4- 0.91 ppb Cadmium and compounds 2.99 ppb Arsenic (cancer endpoint) 9.7 ppb Chromium (total) 30.6 ppb Lead 32.5 ppb Nickel and compounds 33.6 ppb Copper and compounds 33.6 ppb Antimony and compounds 43.1 ppb Zinc 1200.0 ppb
Soil: Medium Risk
Contaminants: Trichloroethane, 1,1,1- 0.02 ppb Methylene chloride 0.09 ppb Beryllium and compounds 0.35 ppb Dinitrotoluene, 2,4- 0.43 ppb Benzo[a]pyrene 0.9 ppb Benzo[k]fluoranthene 0.95 ppb Benzo[b]fluoranthene 1.4 ppb Mercury and compounds (inorganic) 1.4 ppb Fluoranthene 2.0 ppb Cadmium and compounds 4.7 ppb Bis(2-ethylhexyl)phthalate (DEHP) 5.3 ppb Arsenic (cancer endpoint) 6.9 ppb Nickel and compounds 7.9 ppb Chromium (total) 10.6 ppb RDX (Cyclonite) 47.0 ppb Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 58.0 ppb Antimony and compounds 62.5 ppb Barium and compounds 91.8 ppb Trinitrotoluene, 2,4,6- 92.6 ppb Lead 135.0 ppb Zinc 540.0 ppb Aluminum 52700.0 ppb
Surface Water (Human): Medium Risk
Contaminants: Dinitrotoluene, 2,4- 440.0 ppb Beryllium and compounds 2200.0 ppb Mercury and compounds (inorganic) 5560.0 ppb Cadmium and compounds 11600.0 ppb Nickel and compounds 29000.0 ppb Arsenic (cancer endpoint) 43400.0 ppb Antimony and compounds 44100.0 ppb Chromium (total) 46000.0 ppb Lead 215000.0 ppb Zinc 3880000.0 ppb
Site ID: SITE 00006
YORKTOWN NWS
Surface Impoundment/Lagoon
Cost
$10.4M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Oct 2020
This site is under ongoing monitoring until May 2070
Contaminated Areas
Sediment (Marine): High Risk
Contaminants: Benzo[a]pyrene 0.31 ppb Fluoranthene 0.84 ppb Pyrene 0.93 ppb Cadmium and compounds 9.8 ppb Antimony and compounds 48.2 ppb Lead 68.1 ppb Chromium (total) 94.8 ppb Nickel and compounds 100.0 ppb Copper and compounds 130.0 ppb Zinc 643.0 ppb
Groundwater: Medium Risk
Contaminants: Cadmium and compounds 4500.0 ppb Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 7600.0 ppb Dichloroethylene, 1,1- 16000.0 ppb RDX (Cyclonite) 17000.0 ppb Antimony and compounds 57200.0 ppb Dichloroethylene, 1,2- (mixture) 86000.0 ppb Trichloroethylene (TCE) 380000.0 ppb
Surface Water (Human): Medium Risk
Contaminants: Mercury and compounds (inorganic) 210.0 ppb Copper and compounds 50300.0 ppb Chromium (total) 61200.0 ppb Lead 78800.0 ppb Nickel and compounds 84200.0 ppb Zinc 554000.0 ppb
Soil: Low Risk
Contaminants: Bis(2-ethylhexyl)phthalate (DEHP) 0.45 ppb RDX (Cyclonite) 2.9 ppb Copper and compounds 5.5 ppb Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 5.6 ppb Arsenic (cancer endpoint) 6.4 ppb Chromium (total) 25.1 ppb Lead 50.3 ppb Zinc 214.0 ppb
Site ID: SITE 00031
YORKTOWN NWS
Spill Site Area
Cost
$6.28M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Oct 2019
Contaminated Areas
Groundwater: High Risk
Contaminants: Arsenic 11200.0 ppb Lead 19000.0 ppb Vinyl Chloride 22000.0 ppb Chromium 1680000.0 ppb Manganese and compounds 4820000.0 ppb
Soil: Low Risk
Contaminants: Methylene Chloride 200.0 ppb Acetone 450.0 ppb
Site ID: SWMU 00001
YORKTOWN NWS
Surface Disposal Area
Cost
$2.92M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
May 2019
Contaminated Areas
Groundwater: High Risk
Contaminants: Cadmium and compounds 2700.0 ppb 2,4,6-Trinitrotoluene 4600.0 ppb Thallium 5400.0 ppb Dinitrotoluene mixture 9400.0 ppb RDX (Cyclonite) 15000.0 ppb Vanadium 182000.0 ppb Barium and compounds 820000.0 ppb Manganese and compounds 4350000.0 ppb Aluminum 76300000.0 ppb
Soil: High Risk
Contaminants: Dieldrin 0.09 ppb Beryllium and compounds 0.83 ppb 1,3,5-Trinitrobenzene 1.1 ppb Cadmium and compounds 6.65 ppb Benzo[a]pyrene 26.0 ppb Benz(a)anthracene 27.0 ppb Benzo[k]fluoranthene 39.0 ppb Benzo[b]fluoranthene 49.0 ppb Arsenic (cancer) 52.7 ppb Dibenz[ah]anthracene 53.0 ppb Indeno[1,2,3-cd]pyrene 110.0 ppb Manganese and compounds 347.0 ppb Lead 447.0 ppb Aluminum 12300.0 ppb
Sediment (Marine): High Risk
Contaminants: Benzo[b]fluoranthene 0.27 ppb Mercury and compounds (inorganic) 0.3 ppb
Surface Water (Human): High Risk
Contaminants: Mercury and compounds (inorganic) 310.0 ppb Cadmium and compounds 2400.0 ppb Chromium VI and compounds 25600.0 ppb Copper and compounds 57500.0 ppb Lead 112000.0 ppb Zinc 551000.0 ppb Iron 39500000.0 ppb
Surface Water (Marine): High Risk
Contaminants: Mercury and compounds (inorganic) 310.0 ppb Cadmium and compounds 2400.0 ppb Chromium VI and compounds 25600.0 ppb Copper and compounds 57500.0 ppb Lead 112000.0 ppb Zinc 551000.0 ppb Iron 39500000.0 ppb
Sediment (Human): Low Risk
Contaminants: Benzo[b]fluoranthene 0.27 ppb Mercury and compounds (inorganic) 0.3 ppb
Site ID: SWMU 00020
YORKTOWN NWS
Contaminated Sediments
Cost
$176K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Jan 2021
Contaminated Areas
Surface Water (Fresh): High Risk
Contaminants: Heptachlor Epoxide 3000.0 ppb Dieldrin 7400.0 ppb DDE,4,4- 15000.0 ppb
Site ID: SITE 00025
YORKTOWN NWS
Contaminated Ground Water
Cost
$2.56M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Oct 2018
Contaminated Areas
Soil: High Risk
Contaminants: Arsenic 3.71 ppb Cobalt 11.9 ppb Chromium (III) 34.4 ppb Vanadium 42.8 ppb Benzo(a)Pyrene 160.0 ppb Benzo(b)Fluoranthene 360.0 ppb HMX 390.0 ppb Manganese and compounds 473.0 ppb Aluminum 15600.0 ppb Iron 30600.0 ppb
Groundwater: Medium Risk
Contaminants: Chloroform 1700.0 ppb Arsenic 1900.0 ppb 1,1-Dichloroethane 7100.0 ppb Cobalt 11700.0 ppb Trichloroethylene (TCE) 12000.0 ppb 1,4-Dioxane 19200.0 ppb 1,1-Dichloroethylene 30000.0 ppb Nickel subsulfide 68200.0 ppb Chromium (III) 191000.0 ppb Manganese and compounds 701000.0 ppb Iron 5780000.0 ppb
Site ID: SITE 00009
YORKTOWN NWS
Surface Disposal Area
Cost
$3.53M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Oct 2020
Contaminated Areas
Groundwater: High Risk
Contaminants: Mercury and compounds (inorganic) 1820.0 ppb Cadmium and compounds 5800.0 ppb Trinitrobenzene, 1,3,5- 6300.0 ppb Dinitrotoluene, 2,4- 12000.0 ppb Beryllium and compounds 25300.0 ppb Nickel and compounds 164000.0 ppb Lead 248000.0 ppb Chromium (total) 299000.0 ppb Barium and compounds 2070000.0 ppb Trinitrotoluene, 2,4,6- 2300000.0 ppb Zinc 3940000.0 ppb Aluminum 85300000.0 ppb
Sediment (Marine): High Risk
Contaminants: Mercury and compounds (inorganic) 0.55 ppb Dibenz[ah]anthracene 1.5 ppb Acenaphthene 1.6 ppb Fluorene 1.9 ppb Anthracene 2.3 ppb Benzo[a]pyrene 6.0 ppb Benz[a]anthracene 7.5 ppb Chrysene 8.6 ppb Phenanthrene 9.1 ppb Fluoranthene 10.0 ppb Pyrene 12.0 ppb Arsenic (cancer endpoint) 35.1 ppb Copper and compounds 94.2 ppb Lead 266.0 ppb Zinc 442.0 ppb
Surface Water (Fresh): High Risk
Contaminants: Dinitrotoluene, 2,6- 290.0 ppb Dinitrotoluene, 2,4- 380.0 ppb Dichloroethane, 1,1- 6000.0 ppb Trichloroethane, 1,1,1- 18000.0 ppb Lead 19800.0 ppb
Soil: Medium Risk
Contaminants: Benz[a]anthracene 0.55 ppb Chrysene 0.59 ppb Benzo[b]fluoranthene 0.62 ppb Beryllium and compounds 0.86 ppb Mercury and compounds (inorganic) 1.01 ppb Fluoranthene 1.1 ppb Trinitrobenzene, 1,3,5- 3.0 ppb Dinitrotoluene, 2,4- 3.2 ppb Nickel and compounds 8.6 ppb Chromium (total) 19.3 ppb Arsenic (cancer endpoint) 19.7 ppb Copper and compounds 23.5 ppb Vanadium 60.6 ppb Lead 64.7 ppb Zinc 175.0 ppb Trinitrotoluene, 2,4,6- 2100.0 ppb
Surface Water (Human): Medium Risk
Contaminants: Dinitrotoluene, 2,6- 290.0 ppb Dinitrotoluene, 2,4- 380.0 ppb Dichloroethane, 1,1- 6000.0 ppb Trichloroethane, 1,1,1- 18000.0 ppb Lead 19800.0 ppb
Site ID: SITE 00003
YORKTOWN NWS
Landfill
Cost
$5.32M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Oct 2018
Contaminated Areas
Groundwater: High Risk
Contaminants: Mercury and compounds (inorganic) 540.0 ppb Beryllium and compounds 23300.0 ppb Chloroform 29000.0 ppb Cadmium and compounds 29700.0 ppb Antimony and compounds 44000.0 ppb Dichloroethylene, 1,2- (mixture) 61000.0 ppb Trichloroethylene (TCE) 86000.0 ppb Lead 146000.0 ppb Nickel and compounds 594000.0 ppb Chromium (total) 1100000.0 ppb Barium and compounds 1220000.0 ppb Zinc 2840000.0 ppb Aluminum 202000000.0 ppb
Soil: Low Risk
Contaminants: Arsenic (cancer endpoint) 6.0 ppb Copper and compounds 7.3 ppb Nickel and compounds 8.6 ppb Chromium (total) 18.4 ppb Lead 24.4 ppb Zinc 67.4 ppb
Surface Water (Human): Low Risk
Contaminants: Copper and compounds 12000.0 ppb
Site ID: UXO 000002
YORKTOWN NWS
Explosive Ordnance Disposal Area
Cost
$2.5M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Sep 2020
This site is under ongoing monitoring until Aug 2050
Site ID: SITE000033
YORKTOWN NWS
Contaminated Fill
Cost
$1.35M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Sep 2019
Contaminated Areas
Groundwater: Low Risk
Contaminants: Barium 28800.0 ppb Trichloroethylene (TCE) 200000.0 ppb
Soil: Risk Not Evaluated
Site ID: SITE000034
YORKTOWN NWS
Drainage Ditch
Cost
$3M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Oct 2020
Contaminated Areas
Groundwater: Low Risk
Contaminants: Nitrobenzene 13000.0 ppb RDX 34000.0 ppb Trichloroethylene (TCE) 1400000.0 ppb
Soil: Risk Not Evaluated
Site ID: UXO 000003
YORKTOWN NWS
Explosive Ordnance Disposal Area
Cost
$308K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Sep 2021
Site ID: SITE000032
YORKTOWN NWS
Sewage Treatment Plant
Cost
$246K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
May 2019
Contaminated Areas
Groundwater: Low Risk
Contaminants: HMX 32000.0 ppb RDX 35000.0 ppb Aluminum 674000.0 ppb
Sediment (Fresh): Risk Not Evaluated
Sediment (Human): Risk Not Evaluated
Soil: Risk Not Evaluated
Surface Water (Fresh): Risk Not Evaluated
Surface Water (Human): Risk Not Evaluated
Site ID: SWMU 00009
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 2006
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Cadmium and compounds 10.0 ppb Lead 90.0 ppb Vanadium 190.0 ppb Arsenic (cancer) 240.0 ppb Chromium VI and compounds 310.0 ppb Barium and compounds 320.0 ppb 2,4-Dinitrophenol 970.0 ppb 1,3,5-Trinitrobenzene 2900.0 ppb Cyanide (free) 3900.0 ppb 2,4,6-Trinitrotoluene 4200.0 ppb RDX (Cyclonite) 15000.0 ppb
Soil: Medium Risk
Contaminants: Mercury and compounds (inorganic) 0.12 ppb Lead 9.7 ppb Zinc 21.3 ppb Manganese and compounds 35.4 ppb
39 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 00021
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Jun 2000
Contaminated Areas
Soil: High Risk
Contaminants: Trichloroethane, 1,1,1- 0.01 ppb Styrene 0.02 ppb Toluene 0.04 ppb Pentachlorophenol 0.29 ppb Chrysene 0.52 ppb Benzo[k]fluoranthene 0.54 ppb Beryllium and compounds 0.57 ppb Mercury and compounds (inorganic) 0.76 ppb Pyrene 0.98 ppb Benzo[b]fluoranthene 0.99 ppb Bis(2-ethylhexyl)phthalate (DEHP) 2.1 ppb Cadmium and compounds 8.6 ppb Nickel and compounds 9.2 ppb Arsenic (cancer endpoint) 28.3 ppb Chromium (total) 28.4 ppb Barium and compounds 72.8 ppb Lead 113.0 ppb Zinc 2160.0 ppb Aluminum 13700.0 ppb
Groundwater: Medium Risk
Contaminants: Mercury and compounds (inorganic) 250.0 ppb Arsenic (cancer endpoint) 5800.0 ppb Beryllium and compounds 18100.0 ppb Lead 83000.0 ppb Nickel and compounds 117000.0 ppb Cadmium and compounds 145000.0 ppb Chromium (total) 244000.0 ppb Barium and compounds 412000.0 ppb Nitrate 25100000.0 ppb Aluminum 80300000.0 ppb Zinc 999999000.0 ppb
Site ID: SITE 00022
YORKTOWN NWS
Burn Area
Cost
Unknown
Final Cleanup Action
Sep 2001
Contaminated Areas
Soil: High Risk
Contaminants: HMX 140.0 ppb Lead 1910.0 ppb
Surface Water (Marine): High Risk
Contaminants: Lead 32500.0 ppb Nickel and compounds 33600.0 ppb Antimony and compounds 43100.0 ppb Zinc 1200000.0 ppb
Groundwater: Medium Risk
Contaminants: Trichloroethylene (TCE) 110000.0 ppb
Surface Water (Human): Low Risk
Contaminants: Beryllium and compounds 2200.0 ppb Mercury and compounds (inorganic) 5560.0 ppb Cadmium and compounds 11600.0 ppb Antimony and compounds 44100.0 ppb Lead 215000.0 ppb
Site ID: SWMU 00005
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Oct 1998
Contaminated Areas
Soil: Medium Risk
Contaminants: Dibenz[ah]anthracene 0.13 ppb Indeno[1,2,3-cd]pyrene 0.36 ppb Beryllium and compounds 0.39 ppb Cadmium and compounds 0.72 ppb Benzo[k]fluoranthene 1.2 ppb Benzo[b]fluoranthene 1.6 ppb Pyrene 1.8 ppb Fluoranthene 3.1 ppb Lead 75.2 ppb Phenanthrene 2100.0 ppb
Site ID: SWMU 00007
YORKTOWN NWS
Mixed Waste Area
Cost
Unknown
Final Cleanup Action
Jun 2000
Contaminated Areas
Groundwater: High Risk
Contaminants: Aldrin 30.0 ppb Dieldrin 30.0 ppb HCH (alpha) 40.0 ppb Toluene-2,6-diamine 600.0 ppb Bis(2-ethylhexyl)phthalate (DEHP) 1000.0 ppb Trichloroethylene (TCE) 1000.0 ppb Ethylbenzene 2000.0 ppb Carbazole 4000.0 ppb Acenaphthene 5000.0 ppb Diethyl phthalate 5000.0 ppb Fluorene 8000.0 ppb Phenanthrene 11000.0 ppb Dichloroethane, 1,1- 15000.0 ppb Thallium 15500.0 ppb Naphthalene 29000.0 ppb Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 39000.0 ppb Hexahydro-1,3,5-trinitro-1,3,5-triazine 48000.0 ppb Antimony and compounds 53400.0 ppb Methylnaphthalene,2 68000.0 ppb Dichloroethylene, 1,2- (mixture) 120000.0 ppb Copper and compounds 182000.0 ppb Nickel and compounds 391000.0 ppb Trichloroethane, 1,1,1- 700000.0 ppb Arsenic (noncancer) 825000.0 ppb Barium and compounds 972000.0 ppb Vanadium 1100000.0 ppb Zinc 1130000.0 ppb Manganese and compounds 3950000.0 ppb Aluminum 206000000.0 ppb
Soil: High Risk
Contaminants: DDT 0.01 ppb Methoxychlor 0.01 ppb Methylene chloride 0.01 ppb Indeno[1,2,3-cd]pyrene 0.05 ppb Acenaphthene 0.05 ppb Bis(2-ethylhexyl)phthalate (DEHP) 0.06 ppb Phenanthrene 0.09 ppb Benz(a)anthracene 0.15 ppb Pyrene 0.17 ppb Benzo[a]pyrene 0.17 ppb Chrysene 0.24 ppb Benzo[k]fluoranthene 0.26 ppb Fluoranthene 0.3 ppb Beryllium and compounds 0.33 ppb Benzo[b]fluoranthene 0.34 ppb Dibutyl phthalate 0.45 ppb Selenium 0.81 ppb Nickel and compounds 2.6 ppb Arsenic (cancer) 2.7 ppb Copper and compounds 4.9 ppb Chromium VI and compounds 11.0 ppb Lead 16.2 ppb Zinc 21.9 ppb Vanadium 25.8 ppb Barium and compounds 36.5 ppb Manganese and compounds 328.0 ppb Calcium cyanide 578.0 ppb Aluminum phosphide 8270.0 ppb Aluminum 8270.0 ppb
Sediment (Fresh): Medium Risk
Contaminants: Indeno[1,2,3-cd]pyrene 0.19 ppb Benz(a)anthracene 0.26 ppb Benzo[a]pyrene 0.3 ppb Benzo[k]fluoranthene 0.34 ppb Fluoranthene 0.36 ppb Chrysene 0.36 ppb Benzo[b]fluoranthene 0.44 ppb Pyrene 0.47 ppb Silver and compounds 0.82 ppb Beryllium and compounds 1.1 ppb Selenium 2.2 ppb Bis(2-ethylhexyl)phthalate (DEHP) 2.3 ppb Butyl benzyl phthalate 2.3 ppb Dibutyl phthalate 14.0 ppb Arsenic (noncancer) 17.1 ppb Nickel and compounds 21.9 ppb Copper and compounds 23.0 ppb Lead 36.0 ppb Chromium VI and compounds 40.5 ppb Barium and compounds 42.1 ppb Vanadium 55.8 ppb Zinc 137.0 ppb Manganese and compounds 252.0 ppb Aluminum 20800.0 ppb
Sediment (Human): Medium Risk
Contaminants: Benzo[k]fluoranthene 0.34 ppb Arsenic (noncancer) 17.1 ppb Nickel and compounds 21.9 ppb
Sediment (Marine): Medium Risk
Contaminants: Benzo[k]fluoranthene 0.34 ppb Arsenic (noncancer) 17.1 ppb Nickel and compounds 21.9 ppb
Surface Water (Fresh): Medium Risk
Contaminants: Beryllium and compounds 100.0 ppb Copper and compounds 2400.0 ppb Zinc 6100.0 ppb Vanadium sulfate 6800.0 ppb Manganese and compounds 9100.0 ppb Barium and compounds 23400.0 ppb Aluminum 116000.0 ppb
Site ID: SWMU 00008
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 1997
Contaminated Areas
Soil: Low Risk
Contaminants: Naphthalene 0.29 ppb Benzo[a]pyrene 0.35 ppb Mercury 0.46 ppb Beryllium and compounds 0.48 ppb Butyl benzyl phthalate 0.5 ppb Acenaphthylene- 0.51 ppb Phenanthrene 0.54 ppb Benzo(b)fluoranthene 0.64 ppb Fluoranthene 0.65 ppb Anthracin 0.76 ppb Bis(2-ethylhexyl)phthalate 1.6 ppb Arsenic (cancer) 49.0 ppb Vanadium 88.6 ppb Manganese and compounds 305.0 ppb Lead 356.0 ppb
Site ID: SWMU 00010
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 2010
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Cyanide (free) 10.0 ppb Lead 300.0 ppb Vanadium 630.0 ppb Copper and compounds 800.0 ppb Manganese and compounds 3200.0 ppb
Site ID: SWMU 00011
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 1997
Site ID: SWMU 00012
YORKTOWN NWS
Storage Area
Cost
Unknown
Final Cleanup Action
Sep 1997
Contaminated Areas
Soil: High Risk
Contaminants: Indeno[1,2,3-cd]pyrene 14.0 ppb Benzo[a]pyrene 32.0 ppb Arsenic (cancer) 32.8 ppb Benz(a)anthracene 43.0 ppb Benzo[k]fluoranthene 44.0 ppb
Site ID: SWMU 00015
YORKTOWN NWS
Waste Treatment Plant
Cost
Unknown
Final Cleanup Action
Apr 1996
Contaminated Areas
Sediment (Marine): High Risk
Contaminants: Chlordane, gamma- 0.01 ppb DDE,4,4- 0.03 ppb DDD,4,4- 0.05 ppb DDT 0.09 ppb Mercury and compounds (inorganic) 0.44 ppb
Groundwater: Medium Risk
Contaminants: HCH (beta) 50.0 ppb DDT 160.0 ppb Dichloroethane, 1,1- 600.0 ppb Trichloroethane, 1,1,1- 7000.0 ppb Manganese and compounds 155000.0 ppb Nickel and compounds 263000.0 ppb Vanadium 329000.0 ppb Barium and compounds 849000.0 ppb
Soil: Medium Risk
Contaminants: Beryllium and compounds 0.61 ppb Antimony and compounds 4.0 ppb Arsenic (cancer) 19.2 ppb Manganese and compounds 175.0 ppb
Sediment (Human): Low Risk
Contaminants: Chlordane, gamma- 0.01 ppb DDE,4,4- 0.03 ppb DDD,4,4- 0.05 ppb DDT 0.09 ppb Mercury and compounds (inorganic) 0.44 ppb
Site ID: SWMU 00016
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 1995
Site ID: SWMU 00021
YORKTOWN NWS
Contaminated Sediments
Cost
Unknown
Final Cleanup Action
Jun 1998
Contaminated Areas
Sediment (Fresh): High Risk
Contaminants: Aroclor 270.0 ppb
Surface Water (Fresh): High Risk
Contaminants: Mercury 480.0 ppb Aroclor 18000.0 ppb
Site ID: SWMU 00022
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Jun 2000
Contaminated Areas
Soil: High Risk
Contaminants: Beryllium and compounds 0.45 ppb Arsenic (noncancer) 41.0 ppb Cadmium and compounds 120.0 ppb Manganese 1500.0 ppb Chromium VI and compounds 1600.0 ppb Lead 3100.0 ppb Zinc 7700.0 ppb
Site ID: SWMU 00024
YORKTOWN NWS
Incinerator
Cost
Unknown
Final Cleanup Action
Sep 2010
Contaminated Areas
Sediment (Fresh): High Risk
Contaminants: Arsenic (cancer) 20.1 ppb Chromium VI and compounds 39.4 ppb Lead 80.3 ppb
Soil: Medium Risk
Contaminants: Mercury and compounds (methyl) 2.6 ppb Beryllium and compounds 5.9 ppb Arsenic (cancer) 83.8 ppb Lead 2300.0 ppb Vanadium 11200.0 ppb Iron 125000.0 ppb
Site ID: UST 000001
YORKTOWN NWS
POL (Petroleum/Oil/Lubricants) Lines
Cost
Unknown
Final Cleanup Action
Jun 1995
Contaminated Areas
Groundwater: Low Risk
Contaminants: Lead 753000.0 ppb
Soil: Low Risk
Contaminants: Toluene 0.01 ppb Xylene (mixed) 0.11 ppb Ethylbenzene 0.13 ppb
Site ID: SWMU 00002
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Apr 1996
Contaminated Areas
Groundwater: Medium Risk
Contaminants: RDX (Cyclonite) 7900.0 ppb Manganese and compounds 576000.0 ppb Acetone 600000.0 ppb
Soil: Medium Risk
Contaminants: Beryllium and compounds 0.31 ppb Antimony and compounds 3.3 ppb Arsenic (cancer) 5.5 ppb Manganese and compounds 210.0 ppb Aluminum 14500.0 ppb
Site ID: SWMU 00019
YORKTOWN NWS
Burn Area
Cost
Unknown
Final Cleanup Action
Apr 1996
Contaminated Areas
Sediment (Marine): High Risk
Contaminants: Chlordane, gamma- 0.01 ppb Trichloroethane, 1,1,1- 0.03 ppb Mercury and compounds (inorganic) 0.21 ppb Antimony and compounds 3.5 ppb Arsenic (cancer) 9.9 ppb
Surface Water (Marine): High Risk
Contaminants: Cadmium and compounds 4000.0 ppb Chromium (III) 11100.0 ppb Iron 1280000.0 ppb
Groundwater: Medium Risk
Contaminants: Dinitrotoluene, 2,4- 270.0 ppb Dinitrotoluene, 2,6- 270.0 ppb RDX (Cyclonite) 2200.0 ppb Antimony and compounds 40900.0 ppb Bis(2-ethylhexyl)phthalate (DEHP) 82000.0 ppb Arsenic (cancer) 122000.0 ppb Lead 175000.0 ppb Barium and compounds 1060000.0 ppb Manganese and compounds 2530000.0 ppb Aluminum 199000000.0 ppb
Sediment (Human): Low Risk
Contaminants: Chlordane, gamma- 0.01 ppb Trichloroethane, 1,1,1- 0.03 ppb Mercury and compounds (inorganic) 0.21 ppb Antimony and compounds 3.5 ppb Arsenic (cancer) 9.9 ppb
Soil: Low Risk
Contaminants: Antimony and compounds 2.4 ppb Arsenic (cancer) 2.9 ppb Manganese and compounds 226.0 ppb Aluminum 14900.0 ppb
Surface Water (Human): Low Risk
Contaminants: Cadmium and compounds 4000.0 ppb Chromium (III) 11100.0 ppb Iron 1280000.0 ppb
Site ID: UST 000002
YORKTOWN NWS
POL (Petroleum/Oil/Lubricants) Lines
Cost
Unknown
Final Cleanup Action
Jun 1995
Contaminated Areas
Groundwater: Low Risk
Contaminants: Chlorobenzene 14000.0 ppb Dichlorobenzene, 1,3- 17000.0 ppb Nitroso di-n-propylamine, N- 18000.0 ppb Dichlorobenzene, 1,2- 19000.0 ppb Toluene 39000.0 ppb Lead 78000.0 ppb Ethylbenzene 90000.0 ppb Dichlorobenzene, 1,4- 100000.0 ppb Pyrene 112000.0 ppb Benzene 200000.0 ppb Methyl tertbutyl ether (MTBE) 223000.0 ppb Xylene (mixed) 340000.0 ppb Fluorene 434000.0 ppb Phenanthrene 740000.0 ppb Naphthalene 1090000.0 ppb
Soil: Low Risk
Contaminants: Xylene (mixed) 0.01 ppb Bis(2-ethylhexyl)phthalate (DEHP) 5.88 ppb Benzene 100.0 ppb
Site ID: UST 000003
YORKTOWN NWS
POL (Petroleum/Oil/Lubricants) Lines
Cost
Unknown
Final Cleanup Action
Sep 1993
Contaminated Areas
Groundwater: Low Risk
Contaminants: Chloroform 2000.0 ppb Ethylbenzene 4000.0 ppb Benzene 4000.0 ppb Fluorene 10000.0 ppb Phenanthrene 13000.0 ppb Naphthalene 16000.0 ppb
Soil: Low Risk
Contaminants: Trichloroethane, 1,1,1- 0.1 ppb Ethylbenzene 1.13 ppb
Site ID: UXO 000001
YORKTOWN NWS
Firing Range
Cost
Unknown
Final Cleanup Action
Apr 2008
Site ID: SITE 00012
YORKTOWN NWS
Landfill
Cost
$467K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Nov 1997
This site is under ongoing monitoring until Sep 2045
Contaminated Areas
Groundwater: High Risk
Contaminants: Trinitrobenzene, 1,3,5- 910.0 ppb Trinitrotoluene, 2,4,6- 1500.0 ppb Chloroform 2000.0 ppb Dichloroethylene, 1,2- (mixture) 4000.0 ppb RDX (Cyclonite) 4400.0 ppb Cadmium and compounds 7400.0 ppb Acetone 14000.0 ppb Lead 27300.0 ppb Antimony and compounds 46300.0 ppb Trichloroethylene (TCE) 55000.0 ppb Chromium (total) 82200.0 ppb Zinc 160000.0 ppb Aluminum 17200000.0 ppb
Sediment (Marine): High Risk
Contaminants: DDE 0.05 ppb Benzo[a]pyrene 0.11 ppb Chrysene 0.12 ppb Phenanthrene 0.12 ppb Benz[a]anthracene 0.14 ppb Pyrene 0.18 ppb DDD,4,4- 0.18 ppb DDT 0.22 ppb Mercury and compounds (inorganic) 0.24 ppb Fluoranthene 0.3 ppb Silver and compounds 3.0 ppb Cadmium and compounds 8.2 ppb Lead 59.4 ppb Zinc 286.0 ppb
Surface Water (Fresh): High Risk
Contaminants: DDD 60.0 ppb Mercury and compounds (inorganic) 240.0 ppb DDT 460.0 ppb Trichloroethylene (TCE) 4000.0 ppb Copper and compounds 15100.0 ppb Cadmium and compounds 15500.0 ppb Nickel and compounds 19000.0 ppb Lead 42000.0 ppb Zinc 100000.0 ppb
Soil: Medium Risk
Contaminants: DDD 0.35 ppb Benzo[a]pyrene 1.2 ppb Benz[a]anthracene 1.4 ppb Benzo[k]fluoranthene 1.5 ppb Chrysene 1.5 ppb Beryllium and compounds 1.8 ppb Benzo[b]fluoranthene 1.9 ppb Mercury and compounds (inorganic) 2.87 ppb DDE 3.6 ppb Fluoranthene 4.1 ppb Bis(2-ethylhexyl)phthalate (DEHP) 4.4 ppb DDT 5.7 ppb Trinitrotoluene, 2,4,6- 15.0 ppb Arsenic (cancer endpoint) 28.2 ppb Cadmium and compounds 30.6 ppb Chromium (total) 44.9 ppb Nickel and compounds 49.6 ppb Vanadium 93.1 ppb Copper and compounds 720.0 ppb Barium and compounds 1180.0 ppb Lead 1200.0 ppb Zinc 2950.0 ppb Aluminum 17400.0 ppb
Surface Water (Human): Medium Risk
Contaminants: DDD 60.0 ppb Mercury and compounds (inorganic) 240.0 ppb DDT 460.0 ppb Trichloroethylene (TCE) 4000.0 ppb Copper and compounds 15100.0 ppb Cadmium and compounds 15500.0 ppb Nickel and compounds 19000.0 ppb Lead 42000.0 ppb Zinc 100000.0 ppb
Site ID: SITE 00016
YORKTOWN NWS
Landfill
Cost
Unknown
Final Cleanup Action
Sep 1995
Contaminated Areas
Groundwater: High Risk
Contaminants: Mercury and compounds (inorganic) 250.0 ppb Phenol 1000.0 ppb Dichloroethylene, 1,1- 1000.0 ppb RDX (Cyclonite) 1300.0 ppb Trichloroethane, 1,1,1- 3000.0 ppb Dichloroethane, 1,1- 3000.0 ppb Dichlorobenzene, 1,4- 4000.0 ppb Cadmium and compounds 5700.0 ppb Chlorobenzene 6000.0 ppb Beryllium and compounds 7800.0 ppb Arsenic (cancer endpoint) 17800.0 ppb Antimony and compounds 48300.0 ppb Lead 56000.0 ppb Nickel and compounds 167000.0 ppb Chromium (total) 313000.0 ppb Barium and compounds 362000.0 ppb Zinc 376000.0 ppb Aluminum 102000000.0 ppb
Surface Water (Fresh): High Risk
Contaminants: Mercury and compounds (inorganic) 2910.0 ppb Beryllium and compounds 26300.0 ppb Phenol 27000.0 ppb Cadmium and compounds 46600.0 ppb Arsenic (cancer endpoint) 47400.0 ppb Antimony and compounds 62800.0 ppb Lead 293000.0 ppb Chromium (total) 517000.0 ppb Nickel and compounds 775000.0 ppb Zinc 4890000.0 ppb
Sediment (Marine): Medium Risk
Contaminants: Anthracene 0.02 ppb Benzo[a]pyrene 0.05 ppb Benz[a]anthracene 0.07 ppb Pyrene 0.08 ppb Chrysene 0.08 ppb Phenanthrene 0.08 ppb Fluoranthene 0.19 ppb Cadmium and compounds 1.8 ppb Arsenic (cancer endpoint) 6.5 ppb Copper and compounds 8.3 ppb Chromium (total) 17.2 ppb Lead 17.9 ppb Nickel and compounds 28.6 ppb Zinc 149.0 ppb
Surface Water (Human): Medium Risk
Contaminants: Mercury and compounds (inorganic) 2910.0 ppb Beryllium and compounds 26300.0 ppb Phenol 27000.0 ppb Cadmium and compounds 46600.0 ppb Arsenic (cancer endpoint) 47400.0 ppb Antimony and compounds 62800.0 ppb Lead 293000.0 ppb Chromium (total) 517000.0 ppb Nickel and compounds 775000.0 ppb Zinc 4890000.0 ppb
Soil: Low Risk
Contaminants: Dieldrin 0.01 ppb DDE 0.01 ppb Beryllium and compounds 0.47 ppb Bis(2-ethylhexyl)phthalate (DEHP) 0.59 ppb Mercury and compounds (inorganic) 1.08 ppb Arsenic (cancer endpoint) 1.7 ppb Cadmium and compounds 13.6 ppb Nickel and compounds 18.3 ppb Chromium (total) 26.3 ppb Barium and compounds 36.8 ppb Lead 258.0 ppb Zinc 559.0 ppb Aluminum 4630.0 ppb
Site ID: SWMU 00014
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Apr 2006
This site is under ongoing monitoring until Sep 2007
Contaminated Areas
Soil: High Risk
Contaminants: RDX (Cyclonite) 4.9 ppb Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 510.0 ppb
Surface Water (Human): Medium Risk
Contaminants: RDX (Cyclonite) 650.0 ppb Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 650.0 ppb
Sediment (Fresh): Low Risk
Contaminants: Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 1.7 ppb
Sediment (Human): Low Risk
Contaminants: Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 1.7 ppb
Surface Water (Fresh): Low Risk
Contaminants: RDX (Cyclonite) 650.0 ppb
Surface Water (Marine): Low Risk
Contaminants: Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 210.0 ppb RDX (Cyclonite) 650.0 ppb
Site ID: SWMU 00003
YORKTOWN NWS
Fire/Crash Training Area
Cost
Unknown
Final Cleanup Action
Jun 2000
Contaminated Areas
Groundwater: High Risk
Contaminants: Dichloroethylene, 1,2- (cis) 1000.0 ppb Trichloroethylene (TCE) 1700.0 ppb Selenium 2200.0 ppb Chloromethane 3200.0 ppb Bis(2-ethylhexyl)phthalate (DEHP) 7000.0 ppb Methylene chloride 9000.0 ppb Acetone 12000.0 ppb Barium and compounds 39300.0 ppb Antimony and compounds 41900.0 ppb Aluminum 258000.0 ppb
Site ID: SITE 00013
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Jul 1989
Site ID: SWMU 00017
YORKTOWN NWS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Apr 1996
Contaminated Areas
Groundwater: High Risk
Contaminants: Heptachlor epoxide 100.0 ppb Mercury and compounds (inorganic) 1800.0 ppb Manganese and compounds 1670000.0 ppb Aluminum 56000000.0 ppb
Soil: Medium Risk
Contaminants: Beryllium and compounds 0.31 ppb Arsenic (cancer) 2.8 ppb Manganese and compounds 75.0 ppb Aluminum 10500.0 ppb
Site ID: SITE 00015
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Jul 1989
Site ID: SWMU 00004
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Oct 1998
Contaminated Areas
Soil: Low Risk
Contaminants: Mercury and compounds (inorganic) 0.12 ppb Dibenz[ah]anthracene 0.13 ppb Indeno[1,2,3-cd]pyrene 0.36 ppb Silver and compounds 0.65 ppb Benzo[k]fluoranthene 1.2 ppb Chrysene 1.4 ppb Benzo[a]pyrene 1.4 ppb Benzo[b]fluoranthene 1.6 ppb Pyrene 1.8 ppb Fluoranthene 3.1 ppb Arsenic (cancer) 22.3 ppb Chromium VI and compounds 24.5 ppb Vanadium 30.6 ppb Lead 75.2 ppb Zinc 289.0 ppb Manganese and compounds 632.0 ppb
Site ID: SITE 00001
YORKTOWN NWS
Landfill
Cost
$577K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Dec 2000
This site is under ongoing monitoring until Sep 2045
Contaminated Areas
Groundwater: High Risk
Contaminants: Cadmium and compounds 5900.0 ppb Trichloroethane, 1,1,2- 28000.0 ppb Dichloroethylene, 1,2- (mixture) 1000000.0 ppb Zinc 1650000.0 ppb Nitrate 8200000.0 ppb Aluminum 10500000.0 ppb Trichloroethylene (TCE) 18000000.0 ppb
Sediment (Marine): High Risk
Contaminants: Antimony and compounds 11.2 ppb Chromium (total) 89.6 ppb Zinc 122.0 ppb Nickel and compounds 162.0 ppb
Surface Water (Human): Medium Risk
Contaminants: Mercury and compounds (inorganic) 110.0 ppb Nickel and compounds 20300.0 ppb Copper and compounds 31000.0 ppb Lead 278000.0 ppb
Soil: Low Risk
Contaminants: Copper and compounds 5.9 ppb Bis(2-ethylhexyl)phthalate (DEHP) 12.0 ppb Lead 21.4 ppb Arsenic (cancer endpoint) 24.3 ppb Zinc 29.3 ppb
Site ID: SWMU 00018
YORKTOWN NWS
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Jun 2000
This site is under ongoing monitoring until Dec 2009
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Dichloroethane, 1,1- 160000.0 ppb
Soil: Medium Risk
Contaminants: Dibenz[ah]anthracene 0.14 ppb Beryllium and compounds 0.34 ppb Benzo[a]pyrene 0.9 ppb Benzo[b]fluoranthene 1.1 ppb Benz(a)anthracene 1.4 ppb Arsenic (cancer) 1.6 ppb Manganese and compounds 548.0 ppb Aluminum 12600.0 ppb
Site ID: SITE 00005
YORKTOWN NWS
Contaminated Fill
Cost
Unknown
Final Cleanup Action
Sep 1994
Site ID: SITE 00017
YORKTOWN NWS
Landfill
Cost
Unknown
Final Cleanup Action
Sep 2000
Contaminated Areas
Groundwater: High Risk
Contaminants: Mercury and compounds (inorganic) 360.0 ppb Beryllium and compounds 5800.0 ppb Lead 65400.00000000001 ppb Arsenic (cancer endpoint) 106000.0 ppb Zinc 231000.0 ppb Nickel and compounds 351000.0 ppb Chromium (total) 920000.0 ppb Aluminum 164000000.0 ppb
Soil: Low Risk
Contaminants: Mercury and compounds (inorganic) 0.08 ppb Dibenz[ah]anthracene 0.97 ppb Fluoranthene 1.8 ppb Benz[a]anthracene 2.5 ppb Chrysene 2.6 ppb Indeno[1,2,3-cd]pyrene 2.7 ppb Benzo[k]fluoranthene 2.8 ppb Arsenic (cancer endpoint) 2.8 ppb Benzo[b]fluoranthene 3.0 ppb Anthracene 3.6 ppb Pyrene 3.9 ppb Benzo[a]pyrene 5.0 ppb Zinc 26.9 ppb
Site ID: SWMU 00013
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 1997
Site ID: SWMU 00023
YORKTOWN NWS
Storage Area
Cost
Unknown
Final Cleanup Action
Sep 2000
Contaminated Areas
Soil: High Risk
Contaminants: Beryllium and compounds 1.2 ppb Arsenic (noncancer) 160.0 ppb
Site ID: UST 000004
YORKTOWN NWS
POL (Petroleum/Oil/Lubricants) Lines
Cost
Unknown
Final Cleanup Action
Sep 1994
Contaminated Areas
Groundwater: Medium Risk
Contaminants: Lead 181000.0 ppb
Soil: Low Risk
Contaminants: Ethylbenzene 0.03 ppb Toluene 0.08 ppb Xylene (mixed) 0.29 ppb
Site ID: SITE 00002
YORKTOWN NWS
Landfill
Cost
Unknown
Final Cleanup Action
Jun 2007
Contaminated Areas
Sediment (Marine): High Risk
Contaminants: Mercury and compounds (inorganic) 0.11 ppb Cadmium and compounds 2.4 ppb Copper and compounds 10.7 ppb Arsenic (cancer endpoint) 11.7 ppb Lead 19.0 ppb Nickel and compounds 21.2 ppb Silver and compounds 28.4 ppb Chromium (total) 44.5 ppb Zinc 116.0 ppb
Groundwater: Medium Risk
Contaminants: Beryllium and compounds 3500.0 ppb Cadmium and compounds 4500.0 ppb Lead 20900.0 ppb Nickel and compounds 34800.0 ppb Chromium (total) 97400.0 ppb Arsenic (cancer endpoint) 110000.0 ppb Zinc 136000.0 ppb Barium and compounds 197000.0 ppb Nitrate 470000.0 ppb Aluminum 35800000.0 ppb
Surface Water (Human): Medium Risk
Contaminants: Cadmium and compounds 4100.0 ppb Arsenic (cancer endpoint) 5200.0 ppb Copper and compounds 7700.0 ppb Lead 7900.0 ppb Zinc 22500.0 ppb Nickel and compounds 24700.0 ppb
Site ID: SITE 00010
YORKTOWN NWS
Landfill
Cost
Unknown
Final Cleanup Action
Jul 1989
Site ID: SITE 00011
YORKTOWN NWS
Burn Area
Cost
Unknown
Final Cleanup Action
Jun 2000
Contaminated Areas
Sediment (Fresh): High Risk
Contaminants: Mercury and compounds (inorganic) 0.18 ppb
Surface Water (Fresh): High Risk
Contaminants: Mercury and compounds (inorganic) 1460.0 ppb Nickel and compounds 61900.0 ppb Chromium (total) 71600.0 ppb Arsenic (cancer endpoint) 143000.0 ppb Copper and compounds 258000.0 ppb Lead 300000.0 ppb Zinc 904000.0 ppb
Groundwater: Medium Risk
Contaminants: Octahydro-1357-tetranitro-1357- tetrazocine (HMX) 4200.0 ppb Cadmium and compounds 10300.0 ppb Lead 20700.0 ppb RDX (Cyclonite) 28000.0 ppb Chromium (total) 88200.0 ppb Arsenic (cancer endpoint) 90300.0 ppb Zinc 134000.0 ppb Aluminum 14500000.0 ppb
Soil: Medium Risk
Contaminants: Copper and compounds 26.5 ppb Barium and compounds 98.2 ppb
Surface Water (Human): Medium Risk
Contaminants: Mercury and compounds (inorganic) 1460.0 ppb Nickel and compounds 61900.0 ppb Chromium (total) 71600.0 ppb Arsenic (cancer endpoint) 143000.0 ppb Copper and compounds 258000.0 ppb Lead 300000.0 ppb Zinc 904000.0 ppb
Site ID: SITE 00018
YORKTOWN NWS
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Apr 1999
Contaminated Areas
Groundwater: High Risk
Contaminants: Mercury and compounds (inorganic) 730.0 ppb Beryllium and compounds 7500.0 ppb Cadmium and compounds 12600.0 ppb Nickel and compounds 23200.0 ppb Lead 260000.0 ppb Chromium (total) 294000.0 ppb Zinc 357000.0 ppb Barium and compounds 505000.0 ppb Aluminum 144000000.0 ppb
Surface Water (Fresh): High Risk
Contaminants: Arsenic (cancer endpoint) 4100.0 ppb Copper and compounds 199000.0 ppb Zinc 369000.0 ppb
Sediment (Marine): Medium Risk
Contaminants: Arsenic (cancer endpoint) 1.9 ppb Nickel and compounds 5.3 ppb Lead 8.3 ppb Antimony and compounds 12.8 ppb Chromium (total) 18.0 ppb Copper and compounds 29.0 ppb Zinc 44.0 ppb
Surface Water (Human): Low Risk
Contaminants: Arsenic (cancer endpoint) 4100.0 ppb Copper and compounds 199000.0 ppb Zinc 369000.0 ppb
Site ID: SITE 00019
YORKTOWN NWS
Contaminated Fill
Cost
Unknown
Final Cleanup Action
Dec 1998
Contaminated Areas
Sediment (Marine): High Risk
Contaminants: Fluorene 0.23 ppb Anthracene 0.4 ppb Dibenz[ah]anthracene 0.46 ppb Benzo[a]pyrene 1.2 ppb Benz[a]anthracene 1.6 ppb Chrysene 8.2 ppb Pyrene 13.0 ppb Phenanthrene 26.0 ppb Fluoranthene 27.0 ppb Zinc 125.0 ppb
Soil: Medium Risk
Contaminants: Dinitrotoluene, 2,6- 0.77 ppb Dinitrotoluene, 2,4- 1.3 ppb Beryllium and compounds 2.6 ppb Trinitrobenzene, 1,3,5- 4.9 ppb Copper and compounds 14.9 ppb Nickel and compounds 20.0 ppb Arsenic (cancer endpoint) 28.3 ppb Chromium (total) 28.7 ppb Vanadium 49.1 ppb Lead 49.9 ppb Zinc 69.1 ppb Trinitrotoluene, 2,4,6- 120.0 ppb
Groundwater: Low Risk
Contaminants: Trinitrobenzene, 1,3,5- 1300.0 ppb Cadmium and compounds 4500.0 ppb Trinitrotoluene, 2,4,6- 5100.0 ppb Aluminum 4510000.0 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 »