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NAVY INSTALLATION ID: CA917002753000

SAN CLEMENTE ISLAND NALF

san diego, California

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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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 »