Cost So Far
$22.6M
Money already spent on the evaluation and cleanup of hazardous sites.
Expected Additional Cost
$1.76M
The estimated amount of money needed for evaluation and cleanup of hazardous sites at this installation.
Completion Date
2017
The date the DOD says cleanup of all sites was completed. Long term monitoring may continue after this date.
19 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.
6 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 00011
SAN CLEMENTE ISLAND NALF
Surface Disposal Area
Cost
$117K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Mar 2017
This site is under ongoing monitoring until May 2031
Contaminated Areas
Soil: Medium Risk
Contaminants: Beryllium and compounds 0.61 ppb Selenium 1.8 ppb Lead 3.4 ppb Arsenic (cancer) 6.4 ppb Copper and compounds 14.8 ppb Zinc 31.0 ppb Vanadium 49.9 ppb Chromium VI and compounds 58.4 ppb Nickel and compounds 155.0 ppb Barium and compounds 217.0 ppb Manganese and compounds 1710.0 ppb Aluminum 17100.0 ppb Iron 24800.0 ppb
Site ID: SITE 00013
SAN CLEMENTE ISLAND NALF
Surface Disposal Area
Cost
$730K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Sep 2017
Contaminated Areas
Soil: Low Risk
Contaminants: Arochlor 1260 0.04 ppb Silver and compounds 0.09 ppb Antimony-oxide 0.19 ppb Thallium 0.3 ppb Beryllium and compounds 0.62 ppb Heptachlor 1.0 ppb Cadmium and compounds 1.09 ppb Selenium 2.0 ppb Arsenic (noncancer) 10.0 ppb Copper cyanide 17.0 ppb Chromium VI and compounds 17.8 ppb Nickel and compounds 20.0 ppb Lead 21.2 ppb Vanadium 46.3 ppb Zinc 48.0 ppb Barium and compounds 273.0 ppb Manganese and compounds 958.0 ppb Iron 27600.0 ppb Aluminum 254000.0 ppb
Site ID: SITE 00001
SAN CLEMENTE ISLAND NALF
Surface Disposal Area
Cost
$619K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Jun 2013
This site is under ongoing monitoring until Sep 2046
Contaminated Areas
Soil: Medium Risk
Contaminants: Carbazole 0.07 ppb Anthracene 0.1 ppb Mercury and compounds (inorganic) 0.13 ppb Benzo[a]pyrene 0.22 ppb Benzo[b]fluoranthene 0.23 ppb Beryllium and compounds 0.23 ppb Benzo[k]fluoranthene 0.25 ppb Phenanthrene 0.35 ppb Benz(a)anthracene 0.42 ppb Chrysene 0.44 ppb Pyrene 0.56 ppb Fluoranthene 0.7 ppb Silver and compounds 2.4 ppb Selenium 2.5 ppb Antimony and compounds 4.3 ppb Bis(2-ethylhexyl)phthalate (DEHP) 5.4 ppb Cadmium and compounds 8.6 ppb Arsenic (noncancer) 13.6 ppb Vanadium 28.8 ppb Nickel and compounds 32.4 ppb Chromium VI and compounds 43.8 ppb Barium and compounds 82.1 ppb Copper and compounds 205.0 ppb Lead 336.0 ppb Zinc 582.0 ppb Manganese and compounds 1690.0 ppb Aluminum 10800.0 ppb Iron 109000.0 ppb
Site ID: SITE 00012
SAN CLEMENTE ISLAND NALF
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Dec 2013
Contaminated Areas
Soil: Medium Risk
Contaminants: Thallium 0.6 ppb Selenium 1.3 ppb Antimony and compounds 1.6 ppb Arsenic (cancer) 9.9 ppb Nickel and compounds 24.7 ppb Lead 33.0 ppb Chromium VI and compounds 38.9 ppb Vanadium 54.0 ppb Zinc 59.3 ppb Copper and compounds 59.5 ppb Barium and compounds 74.9 ppb Manganese and compounds 374.0 ppb Aluminum 8320.0 ppb Iron 23000.0 ppb
Site ID: UST 000001
SAN CLEMENTE ISLAND NALF
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Sep 2011
Contaminated Areas
Groundwater: Low Risk
Contaminants: Arsenic (cancer) 56000.0 ppb Lead-195 150000.0 ppb
Site ID: UST 000002
SAN CLEMENTE ISLAND NALF
Underground Storage Tanks
Cost
Unknown
Final Cleanup Action
Sep 2011
Contaminated Areas
Soil: Low Risk
Contaminants: Ethylbenzene 0.01 ppb Toluene 0.01 ppb Xylene (mixed) 0.02 ppb Benzene 0.02 ppb Lead 125.0 ppb
13 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 00009
SAN CLEMENTE ISLAND NALF
Spill Site Area
Cost
Unknown
Final Cleanup Action
Jun 2009
Contaminated Areas
Soil: Low Risk
Contaminants: Benzo(b)fluoranthene 0.1 ppb Benzo[k]fluoranthene 0.1 ppb Naphthalene 0.1 ppb Chrysene 0.2 ppb Polychlorinated biphenyls (PCBs) 0.5 ppb Pyrene 0.7 ppb Fluoranthene 0.8 ppb Phenanthrene 1.0 ppb
Site ID: SITE 00010
SAN CLEMENTE ISLAND NALF
Spill Site Area
Cost
Unknown
Final Cleanup Action
Sep 2014
Contaminated Areas
Soil: Medium Risk
Contaminants: Methylene chloride 0.01 ppb Beryllium and compounds 0.36 ppb Selenium 0.66 ppb Naphthalene 5.1 ppb Arsenic (noncancer) 7.8 ppb Copper and compounds 11.2 ppb Antimony and compounds 12.9 ppb Chromium VI and compounds 30.5 ppb Benzo[a]pyrene 41.0 ppb Zinc 41.7 ppb Nickel and compounds 68.6 ppb Vanadium 71.9 ppb Barium and compounds 72.8 ppb Lead 84.5 ppb Manganese and compounds 377.0 ppb Aluminum 12800.0 ppb Iron 20400.0 ppb
Site ID: SITE 00017
SAN CLEMENTE ISLAND NALF
Maintenance Yard
Cost
Unknown
Final Cleanup Action
Dec 2013
Contaminated Areas
Soil: Medium Risk
Contaminants: Dichlorobenzene, 1,2- 16.7 ppb Dichlorobenzene, 1,3- 23.3 ppb Dichlorobenzene, 1,4- 29.1 ppb
Site ID: SITE 00014
SAN CLEMENTE ISLAND NALF
Explosive Ordnance Disposal Area
Cost
Unknown
Final Cleanup Action
Sep 2008
Contaminated Areas
Soil: Low Risk
Contaminants: Lead 250.0 ppb
Site ID: SITE 00016
SAN CLEMENTE ISLAND NALF
Above Ground Storage Tank
Cost
Unknown
Final Cleanup Action
Sep 2009
Contaminated Areas
Soil: Medium Risk
Contaminants: Benzene 2.5 ppb Ethylbenzene 33.0 ppb Toluene 110.0 ppb Xylene (mixed) 570.0 ppb
Site ID: SITE 00004
SAN CLEMENTE ISLAND NALF
Fire/Crash Training Area
Cost
Unknown
Final Cleanup Action
Jul 2013
Contaminated Areas
Soil: Low Risk
Contaminants: Xylene (mixed) 0.03 ppb Bis(2-ethylhexyl)phthalate (DEHP) 0.22 ppb Beryllium and compounds 0.22 ppb Antimony and compounds 0.68 ppb Arsenic (noncancer) 3.7 ppb Lead 11.5 ppb Nickel and compounds 13.4 ppb Copper and compounds 20.2 ppb Chromium VI and compounds 26.2 ppb Vanadium 28.3 ppb Zinc 86.6 ppb Barium and compounds 117.0 ppb Manganese and compounds 442.0 ppb Iron 12900.0 ppb Aluminum 13500.0 ppb
Site ID: SITE 00003
SAN CLEMENTE ISLAND NALF
Surface Disposal Area
Cost
Unknown
Final Cleanup Action
Oct 2009
Contaminated Areas
Soil: Medium Risk
Contaminants: Beryllium and compounds 0.44 ppb Selenium 0.78 ppb Antimony and compounds 0.85 ppb Thallium 1.1 ppb Arsenic (noncancer) 2.6 ppb Lead 7.8 ppb Nickel and compounds 12.9 ppb Copper and compounds 15.2 ppb Chromium VI and compounds 42.2 ppb Vanadium 47.6 ppb Zinc 59.2 ppb Barium and compounds 139.0 ppb Manganese and compounds 1320.0 ppb Aluminum 14100.0 ppb Iron 28700.0 ppb
Site ID: SITE 00002
SAN CLEMENTE ISLAND NALF
Surface Disposal Area
Cost
$399K
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action
Dec 2013
This site is under ongoing monitoring until May 2041
Contaminated Areas
Soil: High Risk
Contaminants: Acetone 0.01 ppb Beryllium and compounds 0.57 ppb Selenium 3.2 ppb Antimony and compounds 3.4 ppb Arsenic (noncancer) 19.0 ppb Vanadium 36.4 ppb Cyanide (free) 41.0 ppb Chromium VI and compounds 53.0 ppb Nickel and compounds 68.0 ppb Silver and compounds 126.0 ppb Barium and compounds 193.0 ppb Copper and compounds 230.0 ppb Manganese and compounds 316.0 ppb Lead 552.0 ppb Zinc 686.0 ppb Aluminum 22900.0 ppb Iron 78100.0 ppb
Site ID: UXO 000014
SAN CLEMENTE ISLAND NALF
Explosive Ordnance Disposal Area
Cost
Unknown
Final Cleanup Action
Jun 2007
Site ID: SITE 00008
SAN CLEMENTE ISLAND NALF
Spill Site Area
Cost
Unknown
Final Cleanup Action
Jun 2009
Contaminated Areas
Soil: Low Risk
Contaminants: Benzo[b]fluoranthene 0.3 ppb Benzo[k]fluoranthene 0.3 ppb Benz(a)anthracene 0.3 ppb Fluorene 0.3 ppb Polychlorinated biphenyls (PCBs) 0.5 ppb Chrysene 0.9 ppb Pyrene 4.6 ppb Phenanthrene 5.0 ppb Fluoranthene 6.3 ppb
Site ID: SITE 00005
SAN CLEMENTE ISLAND NALF
Spill Site Area
Cost
Unknown
Final Cleanup Action
Sep 2008
Contaminated Areas
Soil: Low Risk
Contaminants: Lead 125.0 ppb
Site ID: SITE 00006
SAN CLEMENTE ISLAND NALF
Underground Tank Farm
Cost
Unknown
Final Cleanup Action
Sep 2008
Contaminated Areas
Soil: Low Risk
Contaminants: Acetone 0.01 ppb Antimony and compounds 0.94 ppb Arsenic (cancer) 2.5 ppb Cadmium and compounds 3.8 ppb Lead 6.0 ppb Copper and compounds 22.0 ppb Nickel and compounds 55.9 ppb Zinc 83.6 ppb Chromium VI and compounds 83.8 ppb Barium and compounds 91.2 ppb Vanadium 153.0 ppb Manganese and compounds 273.0 ppb Aluminum 13700.0 ppb Iron 16200.0 ppb
Site ID: SITE 00007
SAN CLEMENTE ISLAND NALF
Spill Site Area
Cost
Unknown
Final Cleanup Action
Sep 2006
Contaminated Areas
Soil: High Risk
Contaminants: Methylnaphthalene,2 0.24 ppb Phenanthrene 0.48 ppb N,N-Dimethylformamide 10000.0 ppb
Groundwater: Medium Risk
Contaminants: Perchlorobenzene 28000.0 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 »