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AIR FORCE INSTALLATION ID: MA157282448700

Joint Base Cape Cod

cape cod, Massachusetts

Cost So Far

$784M

Money already spent on the evaluation and cleanup of hazardous sites.

Expected Additional Cost

$101M

The estimated amount of money needed for evaluation and cleanup of hazardous sites at this installation.

Expected Completion Date

2055

The date by which the DOD estimates cleanup of all sites will be complete. Long term monitoring may continue after this date.

91 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: restrictions on land use. see more » restrictions on land use landfill « see less

23 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: SD005

SD-5 STORM DRAIN DISP SITE NO. 5

Surface Disposal Area

Cost

$1.09M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2006

This site is under ongoing monitoring until Sep 2026

Contaminated Areas

Groundwater: Low Risk

(Otis/SD005) Three distinct contaminant plumes are associated with this site. (ABB-ES, November 1992, Draft RI, pg 2-16). Treatment systems in operation, SD-5 North Treatment started Aug.4, 1997 and SD-5 South recerculating wells, Jun, 1999, and SD-5 Sout Domestic water sources and Johns & Ashumet Ponds are receptors. (ABB-ES, November 1992, Draft RI, pg 2-15, 2-17). Residential water hookups have been completed. Pond concentrations below risk levels. (MMR web site, Overview of Plumes Fact Sheet).

Contaminants: Tetrachloroethylene 6.0 ug/L Toluene 14.0 ug/L 1,2-Dichloroethylene (trans) 200.0 ug/L Trichloroethylene (TCE) 220.0 ug/L Xylene (Mixed) 900.0 ug/L

Soil: Low Risk

SD-5 soil was exavated and removed during Source Area Remediation Program, 2001-2002, which removed the hazard and migration pathway. (Draft Priority 2 and 3 Sites Remedial Action Report, May 2003) Soil remediation activities in 2001-2002 removed contaminated soil. (Draft P2&3 Sites Remedialtion Report, May 2003)

Contaminants: DDT 2.6e-05 mg/kg Acetone 2.8e-05 mg/kg Ethyl benzene 4.0e-05 mg/kg Dieldrin 5.2e-05 mg/kg Fluorene 0.00059 mg/kg Benzo(k)Fluoranthene 0.0011 mg/kg Benzo(a)Pyrene 0.0013 mg/kg Benzo(b)Fluoranthene 0.0015 mg/kg Cadmium and compounds 0.0026 mg/kg Arsenic 0.0032 mg/kg Polychlorinated Biphenyls 0.0035 mg/kg Chrysene 0.01 mg/kg Fluoranthene 0.02 mg/kg Bis(2-Ethylhexyl)Phthalate 0.032 mg/kg Lead 0.099 mg/kg Chromium 0.311 mg/kg Zinc 0.478 mg/kg Aluminum 6.77 mg/kg

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Site ID: SS031

FS-1 AVGAS FUEL TEST DUMP SITE

Spill Site Area

Cost

$2.02M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2003

This site is under ongoing monitoring until Sep 2027

Contaminated Areas

Groundwater: Medium Risk

(Otis/SS031) Monitoring wells contain contaminants associated with suspected spills at this site. (EJC, March 1992, Draft RI, pg 5-4) Residents downgradient from the source may have wells which are supplied from the aquifer. (EJC, March 1992, Draft RI, pg 7-3) With successful implementation of the pilot test system at the leading edge of the FS-1 plume, ground-water contaminants is beei

Contaminants: Ethylene Dibromide 6.94 ug/L

Surface Water: Medium Risk

Surface water in FS-1 discharge zone contained elevated levels of ethylene dibromide (EDB), but does not exceed the ecological bench mark of 31 ppb or the human health screening level of 6.5 ppb. (Jacobs, FS-1 2002 Annual SPEIM Report May, 2003) Surface water data indicate no excedences of the human health screening level of 6.5 ppb. (Jacobs, FS-1 Annual SPEIM Report, May 2003)

Contaminants: Chromium 0.7 ug/L Ethylene Dibromide 1.29 ug/L Chloroform 1.63 ug/L Lead 2.02 ug/L Copper and compounds 2.43 ug/L Barium 22.9 ug/L Manganese and compounds 47.6 ug/L Boron 70.8 ug/L Aluminum 338.0 ug/L Iron 1460.0 ug/L

Surface Water (Fresh): Medium Risk

Surface water in FS-1 discharge zone contained elevated levels of ethylene dibromide (EDB), but does not exceed the ecological bench mark of 31 ppb or the human health screening level of 6.5 ppb. (Jacobs, FS-1 2002 Annual SPEIM Report May, 2003) Concentratins have never exceeded the ecological benchmark of 32 ppb EDB. The bioaccumulation factor for EDB is 10 (low) meaning it does not bioaccumulate.

Contaminants: Chromium 0.7 ug/L Ethylene Dibromide 1.29 ug/L Chloroform 1.63 ug/L Lead 2.02 ug/L Copper and compounds 2.43 ug/L Barium 22.9 ug/L Manganese and compounds 47.6 ug/L Boron 70.8 ug/L Aluminum 338.0 ug/L Iron 1460.0 ug/L

Sediment (Fresh): Low Risk

EDB has been detected in surface waters in the cranberry bog. EDB has not been detected in sediment at levels of concern. EDB does not accumulate in sediment. (HAZWRAP, February 1999, FS, pg ES-1, Tables 3.3 and 3.4; HAZWRAP, May 1999, RI, pg ES-2, 2-5) EDB has not been ditected in bog surface water at concentrations that approach the ecological screening level of 31 ppb.

Contaminants: Ethylene Dibromide 7.0e-08 mg/kg Beryllium and compounds 8.48e-05 mg/kg p-Cresol 0.000104 mg/kg Cobalt 0.000523 mg/kg Arsenic 0.000684 mg/kg Nickel (soluble salts) 0.000721 mg/kg Barium 0.00378 mg/kg Copper and compounds 0.00414 mg/kg Vanadium 0.00434 mg/kg Zinc 0.00439 mg/kg Chromium 0.00474 mg/kg Lead 0.0089 mg/kg Manganese and compounds 0.0214 mg/kg Aluminum 1.2 mg/kg Iron 2.5 mg/kg

Sediment (Human): Low Risk

EDB has been detected in surface waters in the cranberry bog. EDB has not been detected in sediment at levels of concern. EDB does not accumulate in sediment. (HAZWRAP, February 1999, FS, pg ES-1, Tables 3.3 and 3.4; HAZWRAP, May 1999, RI, pg ES-2, 2-5) EDB has not been detected in the bogs at levels exceeding human health benchmark of 6.5 ppb. (Jacobs FS-1 2002 Annual SPEIM Report May, 2003)

Contaminants: Ethylene Dibromide 7.0e-08 mg/kg Beryllium and compounds 8.48e-05 mg/kg p-Cresol 0.000104 mg/kg Cobalt 0.000523 mg/kg Arsenic 0.000684 mg/kg Nickel (soluble salts) 0.000721 mg/kg Barium 0.00378 mg/kg Copper and compounds 0.00414 mg/kg Vanadium 0.00434 mg/kg Zinc 0.00439 mg/kg Chromium 0.00474 mg/kg Lead 0.0089 mg/kg Manganese and compounds 0.0214 mg/kg Aluminum 1.2 mg/kg Iron 2.5 mg/kg

Soil: Low Risk

Minimal concentrations of fuel-related compounds were detected in surface and subsurface area soil samples. (HAZWRAP, May 1999, RI, pg ES-1) Surface and subsurface soil in the source area do not pose an unacceptable risk to human health or the environment and do not warrant further action. (HAZWRAP, February 1999, FS, pg ES-1, 7-2, 7-3)

Contaminants: PCE 2.0e-06 mg/kg Ethyl benzene 3.0e-06 mg/kg Methyl Isobutyl Ketone 3.0e-06 mg/kg Chloroform 4.0e-06 mg/kg Methylene Chloride 7.0e-06 mg/kg Xylene (Mixed) 1.0e-05 mg/kg Nickel (soluble salts) 1.39e-05 mg/kg Styrene 1.6e-05 mg/kg Endosulfan 1.8e-05 mg/kg Methyl Ethyl Ketone 2.0e-05 mg/kg Dieldrin 3.2e-05 mg/kg Dibenzofuran 4.2e-05 mg/kg Toluene 4.3e-05 mg/kg Phenol 4.4e-05 mg/kg Heptachlor Epoxide 6.6e-05 mg/kg Aldrin 0.00011 mg/kg Fluorene 0.00011 mg/kg Carbazole 0.00018 mg/kg Acetone 0.0002 mg/kg Aroclor 1254 0.00021 mg/kg Chlordane 0.00025 mg/kg 2,4-Dichlorophenol 0.00026 mg/kg Dibenz[ah]anthracene 0.00026 mg/kg 4-Chloroaniline 0.00027 mg/kg 2-Methylnaphthalene 0.00032 mg/kg Anthracene 0.00035 mg/kg Acenaphthene 0.00048 mg/kg Selenium 0.0005 mg/kg Indeno(1,2,3-cd)Pyrene 0.00061 mg/kg N-Nitrosodiphenylamine 0.0012 mg/kg Benzo(k)Fluoranthene 0.0013 mg/kg Benzo(a)Pyrene 0.0013 mg/kg Benzo(b)Fluoranthene 0.0014 mg/kg Benz(a)Anthracene 0.0015 mg/kg Chrysene 0.0016 mg/kg Mercury (Methyl) 0.0018 mg/kg 1,2,4-Trichlorobenzene 0.0019 mg/kg Pyrene 0.0026 mg/kg Fluoranthene 0.0031 mg/kg Arsenic 0.0033 mg/kg Cobalt 0.0039 mg/kg Cadmium and compounds 0.0042 mg/kg Vanadium 0.0043 mg/kg Silver and compounds 0.0057 mg/kg Chromium 0.0086 mg/kg BHC 0.009 mg/kg DDE 0.0095 mg/kg Copper and compounds 0.0486 mg/kg DDD 0.12 mg/kg Manganese and compounds 0.238 mg/kg Barium 0.317 mg/kg Zinc 0.374 mg/kg Lead 0.454 mg/kg DDT 0.68 mg/kg Aluminum 7.15 mg/kg Iron 14.7 mg/kg

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Site ID: MB702

ORDNANCE AREA 1

Unknown Site Type

Cost

$366K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 2021

This site is under ongoing monitoring until Sep 2051

Site ID: SS040

FS-10 (PFSA)

Spill Site Area

Cost

$2.12M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2001

This site is under ongoing monitoring until Sep 2037

Contaminated Areas

Groundwater: Low Risk

(Otis/SS040) Contaminants have been detected in off-site monitoring wells. (ABB-ES, November 1993, Draft RI, pg 5-32, 5-37). Idntified constituents not related to site activities. High Manganese and Iron indicated bioattenuationis probablyoccuring. BST 24 Ashumet and Johns Ponds are downgradient of the contamination source. Future residents may use this aquifer as a source of water. (MMES/Radian, August 1994, Comprehensive Plan, pg 2-15; ABB-ES, August 1994, SERGOU RI, pg 6-50)

Contaminants: Bis(2-Ethylhexyl)Phthalate 53.0 ug/L Arsenic 67.2 ug/L Naphthalene 98.0 ug/L Nickel (soluble salts) 138.0 ug/L Zinc 395.0 ug/L Manganese and compounds 960.0 ug/L Iron 136000.0 ug/L

Sediment (Fresh): Low Risk

(Otis/SS040) Drainage from the PFSA area was rerouted to a on-site storme water detention basin. (ECC, Draft RAR, April, 2003. Sediment samples at SD-3 drainage from the FS-10 (PFSA) showed eleveated levels of lead. Impacted sediment was excavared. The drainage culvert from the PFSA area was removed. (Draft RAR SD-2/FS-6/FS-8, SD-3/FTA-3/CY-4 Source Areas (ECC, April 2003.

Contaminants: Mercury 0.0009 mg/kg Benzene 0.0045 mg/kg Methyl Ethyl Ketone 0.0097 mg/kg 2-Methylnapthalene 0.013 mg/kg Ethyl benzene 0.026 mg/kg Lead 0.0373 mg/kg Zinc 0.0451 mg/kg Toluene 0.081 mg/kg Xylene (Mixed) 0.092 mg/kg Iron 3.94 mg/kg

Sediment (Human): Low Risk

(Otis/SS040) Drainage from the PFSA area was rerouted to a on-site storme water detention basin. (ECC, Draft RAR, April, 2003. Base workers may have access to surface sediment during maintenance activities and may be exposed by dermal contact with, or inhalation of, contaminated sediments. (ABB-ES, November 1993, Draft RI, pg 7-20)

Contaminants: Mercury 0.0009 mg/kg Benzene 0.0045 mg/kg Methyl Ethyl Ketone 0.0097 mg/kg 2-Methylnapthalene 0.013 mg/kg Ethyl benzene 0.026 mg/kg Lead 0.0373 mg/kg Zinc 0.0451 mg/kg Toluene 0.081 mg/kg Xylene (Mixed) 0.092 mg/kg Iron 3.94 mg/kg

Soil: Low Risk

Base workers may be exposed to soil during maintenance activities and may be exposed by dermal contact with, or inhalation of, contaminated soil. (ABB-ES, November 1993, Draft RI, pg 7-19)

Contaminants: Toluene 0.00025 mg/kg Bis(2-Ethylhexyl)Phthalate 0.00041 mg/kg Pyrene 0.00054 mg/kg Cadmium and compounds 0.0011 mg/kg Arsenic 0.0013 mg/kg Xylene (Mixed) 0.0038 mg/kg Benzene 0.0045 mg/kg Naphthalene 0.0064 mg/kg 1,1,2,2-Tetrachloroethane 0.0068 mg/kg Chromium 0.011 mg/kg Vanadium 0.0115 mg/kg Lead 0.0116 mg/kg Zinc 0.018 mg/kg Ethyl benzene 0.031 mg/kg Iron 8.81 mg/kg

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Site ID: ML701

OTIS TARGET BUTT

Medium/Large Caliber

Cost

$544K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Apr 2022

This site is under ongoing monitoring until Sep 2052

Site ID: SS043

FS-13 FUEL PIPELINE SPILL

Spill Site Area

Cost

$1.72M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2006

This site is under ongoing monitoring until Sep 2037

Contaminated Areas

Groundwater: Low Risk

(Otis/SS043) Contamination is not present in off-site monitoring wells. (ANEPTEK, July 1995, Draft SI, pg 5-10) Private drinking water wells exist downgradient in this sole-source aquifer. (ANEPTEK, July 1995, Draft SI, pg 2-7; MMES/Radian, August 1995, Comprehensive Plan, pg 2-15)

Contaminants: Naphthalene 39.0 ug/L 1,3,5-Trimethylbenzene 143.0 ug/L 1,2,4-Trimethylbenzene 383.0 ug/L Tetrachloroethylene 500.0 ug/L Trichloroethylene (TCE) 3200.0 ug/L

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Site ID: SS079

FS-28 EDB PLUME

Spill Site Area

Cost

$3.27M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until Sep 2031

Contaminated Areas

Groundwater: High Risk

Streamflow data indicates that there is significant discharge from the aquifer to the Coonamessett River. Streamflow data indicates these discharges occur between Hatchville Road and Thomas Landers Road. EDB was found in the surface waters of the Coonamessett River and cranberry bogs. There is a potential for a release to the air and exposure to the nearby residents on Little John Road and Thomas Landers Road. The human health risk assessment quantified r

Contaminants: Beryllium and compounds 0.45 ug/L Methylene Chloride 0.54 ug/L Carbon Disulfide 0.68 ug/L 1,1-Dichloroethylene 0.71 ug/L Cumene 0.73 ug/L Mercury (Methyl) 0.78 ug/L Bromodichloromethane 1.2 ug/L Dibutyl Phthalate 1.4 ug/L Chloroform 1.5 ug/L 1,2-Dichloroethylene (cis) 2.7 ug/L Vanadium 3.0 ug/L Antimony and compounds 4.4 ug/L Carbon tetrachloride 5.0 ug/L Cadmium and compounds 5.2 ug/L Ethylene Dibromide 10.0 ug/L 1,1,1-Trichloroethane 10.0 ug/L Selenium 14.1 ug/L Toluene 15.0 ug/L 1,1,2,2-Tetrachloroethane 22.0 ug/L Silver and compounds 30.1 ug/L Lead 37.0 ug/L Ammonia 50.0 ug/L Cobalt 53.4 ug/L Copper and compounds 65.4 ug/L Trichloroethylene (TCE) 66.0 ug/L Tetrachloroethylene 71.0 ug/L Arsenic 77.0 ug/L Nickel (soluble salts) 110.0 ug/L Chromium 151.0 ug/L Boron 169.0 ug/L Fluorine 200.0 ug/L Nitrite 240.0 ug/L Barium 252.0 ug/L Zinc 280.0 ug/L Nitrate 1500.0 ug/L Manganese and compounds 1850.0 ug/L Bis(2-Ethylhexyl)Phthalate 2100.0 ug/L Aluminum 2530.0 ug/L Iron 8680.0 ug/L Chlorine 35300.0 ug/L

Surface Water: High Risk

Streamflow data indicates that there is significant discharge from the aquifer to the Coonamessett River. Streamflow data indicates these discharge occur between Hatchville Road and Thomas Landers Road. EDB was found in the surface waters of the Coonamessett River and cranberry bogs. There is a potential for a release to the air and exposure to the nearby residents on Little John Road and Thomas Landers Road. The human health risk assessment quantified r

Contaminants: Ethylene Dibromide 0.32 ug/L Silver and compounds 0.64 ug/L Chromium 1.15 ug/L Arsenic 2.2 ug/L Lead 3.11 ug/L Cobalt 4.07 ug/L Copper and compounds 7.92 ug/L Methyl Isobutyl Ketone 10.9 ug/L Barium 13.2 ug/L Nickel (soluble salts) 14.3 ug/L Acetone 18.8 ug/L Manganese and compounds 26.2 ug/L Methyl Ethyl Ketone 31.2 ug/L Bis(2-Ethylhexyl)Phthalate 49.5 ug/L Nitrite 83.0 ug/L Zinc 91.8 ug/L Aluminum 299.0 ug/L Nitrate 365.0 ug/L Ammonia 897.0 ug/L Iron 2840.0 ug/L Chlorine 14500.0 ug/L

Surface Water (Fresh): High Risk

Streamflow data indicates that there is significant discharge from the aquifer to the Coonamessett River. Streamflow data indicates these discharge occur between Hatchville Road and Thomas Landers Road. EDB was found in the surface waters of the Coonamessett River and cranberry bogs. There is a potential for a release to the air and exposure to the nearby residents on Little John Road and Thomas Landers Road. There could be ecologically significant adver

Contaminants: Ethylene Dibromide 0.32 ug/L Silver and compounds 0.64 ug/L Chromium 1.15 ug/L Arsenic 2.2 ug/L Lead 3.11 ug/L Cobalt 4.07 ug/L Copper and compounds 7.92 ug/L Methyl Isobutyl Ketone 10.9 ug/L Barium 13.2 ug/L Nickel (soluble salts) 14.3 ug/L Acetone 18.8 ug/L Manganese and compounds 26.2 ug/L Methyl Ethyl Ketone 31.2 ug/L Bis(2-Ethylhexyl)Phthalate 49.5 ug/L Nitrite 83.0 ug/L Zinc 91.8 ug/L Aluminum 299.0 ug/L Nitrate 365.0 ug/L Ammonia 897.0 ug/L Iron 2840.0 ug/L Chlorine 14500.0 ug/L

Sediment (Fresh): Medium Risk

There is no conclusive evidence to indicate that the FS-28 plume comes in contact with the bottom of Coonamessett Pond, although this is possible. No water or sediment samples from Coonamessett Pond taken during the RI contained detectable concentrations There could be ecologically significant adverse effects for individual alewife and eastern box turtle in the Coonamessett River and for individual alewife, mucket, osprey, and heron in the ponds. These risks are primarily due to cobalt and mercury in the

Contaminants: p-Cresol 5.05e-05 mg/kg 2-Methylnaphthalene 6.28e-05 mg/kg Carbazole 6.86e-05 mg/kg Dibenz[ah]anthracene 6.87e-05 mg/kg Dibenzofuran 0.000115 mg/kg Butyl Benzyl Phthalate 0.000132 mg/kg Silver and compounds 0.000156 mg/kg Anthracene 0.00019 mg/kg Benzo(k)Fluoranthene 0.000204 mg/kg Acetone 0.000216 mg/kg Benzo(g,h,i)Perylene 0.000224 mg/kg Fluorene 0.00024 mg/kg Toluene 0.000267 mg/kg Indeno(1,2,3-cd)Pyrene 0.00028 mg/kg Benzo(a)Pyrene 0.000375 mg/kg Benz(a)Anthracene 0.000427 mg/kg Mercury 0.000442 mg/kg Chrysene 0.000455 mg/kg Naphthalene 0.000576 mg/kg Benzo(b)Fluoranthene 0.000594 mg/kg Pyrene 0.000758 mg/kg Phenanthrene 0.00117 mg/kg Fluoranthene 0.0012 mg/kg Beryllium and compounds 0.00228 mg/kg Cadmium and compounds 0.0032 mg/kg Isophorone 0.00435 mg/kg Cobalt 0.00606 mg/kg Selenium 0.0158 mg/kg Chromium 0.0172 mg/kg Copper and compounds 0.0195 mg/kg Arsenic 0.0493 mg/kg Vanadium 0.0821 mg/kg Manganese and compounds 0.0924 mg/kg Nickel (soluble salts) 0.0956 mg/kg Zinc 0.106 mg/kg Lead 0.108 mg/kg Barium 0.17 mg/kg Aluminum 15.3 mg/kg Iron 104.0 mg/kg

Sediment (Human): Medium Risk

There is no conclusive evidence to indicate that the FS-28 plume comes in contact with the bottom of Coonamessett Pond, although this is possible. No water or sediment samples from Coonamessett Pond taken during the RI contained detectable concentrations The human health risk assess ment quantified risk from current and future exposure for on-base workers, cranberry workers, adult and child recreational waders, recreational fish eaters, adult and child swimmers, and residential household water users. (Jac

Contaminants: p-Cresol 5.05e-05 mg/kg 2-Methylnaphthalene 6.28e-05 mg/kg Carbazole 6.86e-05 mg/kg Dibenz[ah]anthracene 6.87e-05 mg/kg Dibenzofuran 0.000115 mg/kg Butyl Benzyl Phthalate 0.000132 mg/kg Silver and compounds 0.000156 mg/kg Anthracene 0.00019 mg/kg Benzo(k)Fluoranthene 0.000204 mg/kg Acetone 0.000216 mg/kg Benzo(g,h,i)Perylene 0.000224 mg/kg Fluorene 0.00024 mg/kg Toluene 0.000267 mg/kg Indeno(1,2,3-cd)Pyrene 0.00028 mg/kg Benzo(a)Pyrene 0.000375 mg/kg Benz(a)Anthracene 0.000427 mg/kg Mercury 0.000442 mg/kg Chrysene 0.000455 mg/kg Naphthalene 0.000576 mg/kg Benzo(b)Fluoranthene 0.000594 mg/kg Pyrene 0.000758 mg/kg Phenanthrene 0.00117 mg/kg Fluoranthene 0.0012 mg/kg Beryllium and compounds 0.00228 mg/kg Cadmium and compounds 0.0032 mg/kg Isophorone 0.00435 mg/kg Cobalt 0.00606 mg/kg Selenium 0.0158 mg/kg Chromium 0.0172 mg/kg Copper and compounds 0.0195 mg/kg Arsenic 0.0493 mg/kg Vanadium 0.0821 mg/kg Manganese and compounds 0.0924 mg/kg Nickel (soluble salts) 0.0956 mg/kg Zinc 0.106 mg/kg Lead 0.108 mg/kg Barium 0.17 mg/kg Aluminum 15.3 mg/kg Iron 104.0 mg/kg

Soil: Low Risk

The CS-20, CS-21, FS-28, and FS-29 plumes are detached from their source areas, which are unknown. (Jacobs, June 1999, Final SWOU FS, pg 1-3) FS-28

Contaminants: Beryllium and compounds 6.0e-05 mg/kg Cadmium and compounds 0.00036 mg/kg Cobalt 0.00043 mg/kg Arsenic 0.00066 mg/kg Copper and compounds 0.0015 mg/kg Vanadium 0.0021 mg/kg Barium 0.0031 mg/kg Zinc 0.0041 mg/kg Chromium 0.0049 mg/kg Manganese and compounds 0.02 mg/kg Aluminum 0.493 mg/kg Iron 1.86 mg/kg

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Site ID: MB701

FORMER OTIS BOMB STORAGE MAGAZINES

Unknown Site Type

Cost

$364K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 2021

This site is under ongoing monitoring until Sep 2051

Site ID: OW524

OWS 6165

Oil/Water Separator

Cost

$1.5M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2024

Site ID: SS080

CS-20 PCE PLUME

Contaminated Ground Water

Cost

$2.19M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jan 2006

This site is under ongoing monitoring until Sep 2027

Contaminated Areas

Groundwater: High Risk

The CS-20 plume hase been delineated and extends off base, therefore, groundwater has been confirmed as a migratin pathway. The plumes are detached from their source areas, which are unknown. (Jacobs, June 99, Final SWOU FS, pg 1-3) Residential areas potentially impacted by the CS-20 plume have been connected to municipal water supply (AFCEE/MMR RMP, 2003).

Contaminants: 1,2-Dibromoethane 0.01 ug/L Carbon tetrachloride 0.56 ug/L Trichloroethylene (TCE) 2.6 ug/L 1,1-Dichloroethane 3.2 ug/L 1,1,1-Trichloroethane 10.0 ug/L Tetrachloroethylene 71.0 ug/L

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Site ID: SS022

CS-10 UTES/BOMARC SITE

Spill Site Area

Cost

$47M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2009

This site is under ongoing monitoring until Sep 2060

Contaminated Areas

Groundwater: Medium Risk

Plume has separated from source area. Interim operations since 1999 have significantly reduced concentrations - migration is limited. Residential areas have been hooked up to municipal water.

Contaminants: PCE 119.0 ug/L Trichloroethylene (TCE) 602.0 ug/L

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Site ID: SS081

CS-21 TCE PLUME

Contaminated Ground Water

Cost

$3.91M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2006

This site is under ongoing monitoring until Sep 2032

Contaminated Areas

Groundwater: High Risk

The CS-21, plume has migrated off-base and is detached from the source areas, which are unknown. (Jacobs, June 99, Final SWOU FS, pg 1-3) Residential areas have been hooked up to municipal water, which limits the potential for exposure.(AFCEE/MMR RMP, 2003). The receptor is classified as identified (high) because the aquifer is a sole source aquifer.

Contaminants: Trichloroethylene (TCE) 73.5 ug/L

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Site ID: CD500

DUMP AREA

Contaminated Soil Piles

Cost

$995K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2021

Site ID: FT056

FTA-2 FORMER FPTA (1948-56)

Fire/Crash Training Area

Cost

$2.06M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2001

This site is under ongoing monitoring until Sep 2037

Contaminated Areas

Groundwater: High Risk

(Otis/FT056) Ground water contamination is present on-site. (ABB-ES, November 30, 1993, RI, pg 5-25) There are private drinking water wells located downgradient of the site area. (ABB-ES, August 1994, SERGOU RI, pg 6-5)

Contaminants: BHC 0.01 ug/L Dieldrin 0.02 ug/L Endosulfan 0.03 ug/L Trichloroethylene (TCE) 0.2 ug/L sec-Butylbenzene 0.8 ug/L Mercury (Methyl) 0.83 ug/L iso-Propylbenzene 0.9 ug/L Phenol 1.0 ug/L Bis(2-Ethylhexyl)Phthalate 1.0 ug/L Chloroform 1.3 ug/L 1,1,2,2,-Tetrachloroethylene 1.4 ug/L Beryllium and compounds 2.4 ug/L Selenium 2.8 ug/L 4,4-DDT 4.1 ug/L Endrin 4.1 ug/L n-Propylbenzene 4.6 ug/L Silver and compounds 5.1 ug/L 1,3,5-Trimethylbenzene 5.3 ug/L o-Xylene 6.5 ug/L Arsenic 8.5 ug/L 1,2,4-Trimethylbenzene 14.0 ug/L 1,2-Dichloroethylene (cis) 23.0 ug/L Cobalt 24.9 ug/L 4,4-DDD 26.0 ug/L Fluorine 27.0 ug/L Nickel (soluble salts) 33.6 ug/L Vanadium 62.8 ug/L Antimony and compounds 72.8 ug/L Cadmium and compounds 94.9 ug/L Aroclor 1254 110.0 ug/L Benzene 170.0 ug/L Chromium 386.0 ug/L Toluene 500.0 ug/L Copper and compounds 731.0 ug/L Manganese and compounds 889.0 ug/L Ethyl benzene 1000.0 ug/L Naphthalene 1100.0 ug/L 2-Methylnaphthalene 1500.0 ug/L Xylene (Mixed) 5600.0 ug/L Barium 8910.0 ug/L Lead 14900.0 ug/L Chlorine 20000.0 ug/L Aluminum 22800.0 ug/L Iron 29900.0 ug/L Zinc 31400.0 ug/L

Sediment (Fresh): High Risk

(Otis/FT056) Surface water/sediments in nearby ponds do not indicate contamination; however, contamination is migrating. (ABB-ES, November 30, 1993, RI, pg 5-25) Ponds contain diverse flora and fauna. (ABB-ES, November 30, 1993, RI, pg 7-49)

Contaminants: PCE 2.0e-06 mg/kg Chloromethane 2.0e-06 mg/kg Methyl Ethyl Ketone 3.0e-06 mg/kg DDD 3.8e-06 mg/kg Toluene 5.0e-06 mg/kg Xylene (Mixed) 9.0e-06 mg/kg Chlordane 1.8e-05 mg/kg Acetone 3.2e-05 mg/kg DDE 3.2e-05 mg/kg Aroclor 1254 5.8e-05 mg/kg Acenaphthene 6.6e-05 mg/kg Naphthalene 7.7e-05 mg/kg Fluorene 9.4e-05 mg/kg Butyl Benzyl Phthalate 9.9e-05 mg/kg DDT 0.0001 mg/kg 2-Methylnaphthalene 0.00011 mg/kg Anthracene 0.00012 mg/kg Carbazole 0.00012 mg/kg Mercury 0.00014 mg/kg Dieldrin 0.0002 mg/kg Dibenz[ah]anthracene 0.00022 mg/kg Benzo(g,h,i)Perylene 0.00026 mg/kg Indeno(1,2,3-cd)Pyrene 0.00041 mg/kg Beryllium and compounds 0.00041 mg/kg Benzo(a)Pyrene 0.00056 mg/kg Benz(a)Anthracene 0.0006 mg/kg Arochlor 1260 0.00065 mg/kg Silver and compounds 0.00065 mg/kg Chrysene 0.00078 mg/kg Cadmium and compounds 0.00087 mg/kg Phenanthrene 0.00089 mg/kg Pyrene 0.0011 mg/kg Fluoranthene 0.0013 mg/kg Benzo(b)Fluoranthene 0.0014 mg/kg Benzo(k)Fluoranthene 0.0014 mg/kg Cyanide (free) 0.0052 mg/kg Arsenic 0.0076 mg/kg Cobalt 0.0099 mg/kg Aluminum 0.015 mg/kg Nickel (soluble salts) 0.0336 mg/kg Copper and compounds 0.0468 mg/kg Iron 0.061 mg/kg Chromium 0.0734 mg/kg Vanadium 0.108 mg/kg Manganese and compounds 0.22 mg/kg Zinc 0.285 mg/kg Barium 0.337 mg/kg Lead 0.599 mg/kg

Sediment (Human): High Risk

(Otis/FT056) Surface water/sediments in nearby ponds do not indicate contamination; however, contamination is migrating. (ABB-ES, November 30, 1993, RI, pg 5-25) Lakes and ponds are used for recreational purposes. (ABB-ES, August 30, 1994, SERGOU, pg 6-5)

Contaminants: PCE 2.0e-06 mg/kg Chloromethane 2.0e-06 mg/kg Methyl Ethyl Ketone 3.0e-06 mg/kg DDD 3.8e-06 mg/kg Toluene 5.0e-06 mg/kg Xylene (Mixed) 9.0e-06 mg/kg Chlordane 1.8e-05 mg/kg Acetone 3.2e-05 mg/kg DDE 3.2e-05 mg/kg Aroclor 1254 5.8e-05 mg/kg Acenaphthene 6.6e-05 mg/kg Naphthalene 7.7e-05 mg/kg Fluorene 9.4e-05 mg/kg Butyl Benzyl Phthalate 9.9e-05 mg/kg DDT 0.0001 mg/kg 2-Methylnaphthalene 0.00011 mg/kg Anthracene 0.00012 mg/kg Carbazole 0.00012 mg/kg Mercury 0.00014 mg/kg Dieldrin 0.0002 mg/kg Dibenz[ah]anthracene 0.00022 mg/kg Benzo(g,h,i)Perylene 0.00026 mg/kg Indeno(1,2,3-cd)Pyrene 0.00041 mg/kg Beryllium and compounds 0.00041 mg/kg Benzo(a)Pyrene 0.00056 mg/kg Benz(a)Anthracene 0.0006 mg/kg Arochlor 1260 0.00065 mg/kg Silver and compounds 0.00065 mg/kg Chrysene 0.00078 mg/kg Cadmium and compounds 0.00087 mg/kg Phenanthrene 0.00089 mg/kg Pyrene 0.0011 mg/kg Fluoranthene 0.0013 mg/kg Benzo(b)Fluoranthene 0.0014 mg/kg Benzo(k)Fluoranthene 0.0014 mg/kg Cyanide (free) 0.0052 mg/kg Arsenic 0.0076 mg/kg Cobalt 0.0099 mg/kg Aluminum 0.015 mg/kg Nickel (soluble salts) 0.0336 mg/kg Copper and compounds 0.0468 mg/kg Iron 0.061 mg/kg Chromium 0.0734 mg/kg Vanadium 0.108 mg/kg Manganese and compounds 0.22 mg/kg Zinc 0.285 mg/kg Barium 0.337 mg/kg Lead 0.599 mg/kg

Soil: High Risk

Data suggest that source-area soils may be a source of release of VOCs to ground water. (HAZWRAP, September 1998, ROD AOC FTA-2/LF-2, PFSA/FS-10/FS-11, SD-2/FS-6/FS-8, SD-3, FTA-3/CY-4, SD-4, SD-5/FS-5 Source Areas, pg 7-10) Base workers and utility workers could be exposed while excavating. (ABB-ES, November 30, 1993, RI, pg 7-23)

Contaminants: Chlordane 1.1e-06 mg/kg Chloroform 2.0e-06 mg/kg Arsenic 3.5e-06 mg/kg Anthracene 1.6e-05 mg/kg Dibenz[ah]anthracene 1.9e-05 mg/kg Aroclor 1254 2.5e-05 mg/kg Methyl Ethyl Ketone 3.7e-05 mg/kg p-Cresol 4.3e-05 mg/kg Dibutyl Phthalate 4.5e-05 mg/kg Indeno(1,2,3-cd)Pyrene 7.5e-05 mg/kg BHC 0.00011 mg/kg Phenol 0.00012 mg/kg Benz(a)Anthracene 0.00014 mg/kg Heptachlor 0.00019 mg/kg Acetone 0.00021 mg/kg Benzo(k)Fluoranthene 0.00025 mg/kg Aldrin 0.00029 mg/kg Chrysene 0.00042 mg/kg Benzo(a)Pyrene 0.00042 mg/kg Cyanide (free) 0.00046 mg/kg Dieldrin 0.00046 mg/kg Beryllium and compounds 0.00048 mg/kg Endosulfan 0.0005 mg/kg Mercury (Methyl) 0.00053 mg/kg Endrin 0.00054 mg/kg Cadmium and compounds 0.0006 mg/kg Pyrene 0.00063 mg/kg 4,4-DDE 0.00064 mg/kg Bis(2-Ethylhexyl)Phthalate 0.00076 mg/kg 4,4-DDD 0.0008 mg/kg 4,4-DDT 0.00089 mg/kg Benzo(b)Fluoranthene 0.0011 mg/kg 1,2-Dichloroethylene (Total) 0.0026 mg/kg Silver and compounds 0.0027 mg/kg Cobalt 0.005 mg/kg Chromium 0.0107 mg/kg Nickel (soluble salts) 0.0123 mg/kg Copper and compounds 0.0126 mg/kg Vanadium 0.0208 mg/kg Fluoranthene 0.022 mg/kg Antimony and compounds 0.0418 mg/kg Benzene 0.048 mg/kg Zinc 0.0979 mg/kg Ethyl benzene 0.2 mg/kg Manganese and compounds 0.226 mg/kg Toluene 0.32 mg/kg Naphthalene 0.37 mg/kg Barium 0.445 mg/kg Lead 0.576 mg/kg 2-Methylnaphthalene 0.59 mg/kg Xylene (Mixed) 1.2 mg/kg Aluminum 9.84 mg/kg Iron 11.4 mg/kg

Surface Water: High Risk

(Otis/FT056) Surface water/sediments in nearby ponds do not indicate contamination; however, contamination is migrating. (ABB-ES, November 30, 1993, RI, pg 5-25) Lakes and ponds are used for recreational purposes. (ABB-ES, August 30, 1994, SERGOU, pg 6-5)

Contaminants: Cadmium and compounds 0.37 ug/L Bis(2-Ethylhexyl)Phthalate 1.0 ug/L Arsenic 2.2 ug/L Cobalt 4.6 ug/L Manganese and compounds 34.5 ug/L Zinc 67.0 ug/L Lead 70.3 ug/L Aluminum 411.0 ug/L Iron 502.0 ug/L

Surface Water (Fresh): High Risk

(Otis/FT056) Surface water/sediments in nearby ponds do not indicate contamination; however, contamination is migrating. (ABB-ES, November 30, 1993, RI, pg 5-25) Ponds contain diverse flora and fauna. (ABB-ES, November 30, 1993, RI, pg 7-49)

Contaminants: Cadmium and compounds 0.37 ug/L Bis(2-Ethylhexyl)Phthalate 1.0 ug/L Arsenic 2.2 ug/L Cobalt 4.6 ug/L Manganese and compounds 34.5 ug/L Zinc 67.0 ug/L Lead 70.3 ug/L Aluminum 411.0 ug/L Iron 502.0 ug/L

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Site ID: TS701

SKEET RANGE

Small Arms Range

Cost

$337K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 2021

This site is under ongoing monitoring until Sep 2051

Site ID: LF006

LF-1 MAIN BASE LANDFILL

Landfill

Cost

$9.94M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2007

This site is under ongoing monitoring until Sep 2058

Contaminated Areas

Groundwater: Medium Risk

Plume upwells near Buzzards Bay into near-shore area at concentrations below MCL. Plume is in a sole-source aquifer and is not spreading beyond its current footprint (ie has reached its discharge point). Two municipal wells in area do not have plume const Water supply wells are not impacted by plume with interim system in operation as verified by sentry well monitoring and water supply well testing. LUCs (drilling moratorium) prevent use of contaminated portions of aquifer.

Contaminants: Ethylene Dibromide 0.17 ug/L Bromodichloromethane 0.73 ug/L 1,3,5-Trimethylbenzene 0.8 ug/L Dibromochloromethane 0.8 ug/L Cadmium and compounds 0.83 ug/L Mercury (Methyl) 0.89 ug/L 1,2-Dichloroethane (EDC) 1.0 ug/L Bis(2-Ethylhexyl)Phthalate 1.0 ug/L Methyl Ethyl Ketone 1.0 ug/L 1,1-Dichloroethane 1.6 ug/L Beryllium and compounds 1.9 ug/L o-Xylene 2.0 ug/L 1,2,4-Trimethylbenzene 2.0 ug/L Selenium 2.6 ug/L Chloroform 3.0 ug/L Methylene Chloride 3.0 ug/L Manganese and compounds 3.3 ug/L Fluorine 3.5 ug/L Vinyl Chloride 5.3 ug/L 1,2-Dichloroethylene (Total) 7.0 ug/L Acetone 7.0 ug/L 1,1,1-Trichloroethane 7.0 ug/L Trichlorofluoromethane 7.3 ug/L Antimony and compounds 8.4 ug/L 1,1,2,2-Tetrachloroethane 8.9 ug/L 1,4-Dichlorobenzene 9.4 ug/L Dichlorodifluoromethane 13.0 ug/L 1,2-Dichloroethylene (cis) 15.0 ug/L Toluene 23.0 ug/L 1,1-Dichloroethylene 23.0 ug/L Cobalt 23.6 ug/L Chlorobenzene 24.0 ug/L Benzene 24.0 ug/L Lead 25.3 ug/L Arsenic 28.9 ug/L Carbon tetrachloride 30.9 ug/L Ethyl benzene 32.0 ug/L Nickel (soluble salts) 40.8 ug/L Tetrachloroethylene 42.6 ug/L Chromium 57.7 ug/L Trichloroethylene (TCE) 65.1 ug/L Vanadium 67.5 ug/L Copper and compounds 104.0 ug/L Boron 110.0 ug/L Barium 127.0 ug/L Ammonia 136.0 ug/L Nitrate 440.0 ug/L Zinc 496.0 ug/L Xylene (Mixed) 560.0 ug/L Aluminum 18300.0 ug/L Chlorine 34300.0 ug/L Iron 112000.0 ug/L

Soil: Low Risk

Fenced, capped landfill in hunting area. Fenced landfill.

Contaminants: Acetone 2.6e-05 mg/kg Silver and compounds 0.00094 mg/kg

Surface Water: Low Risk

No ecological pathway. Recreational swimmers and cranberry workers could be exposed to contamination by dermal exposure to surface water and sediment; incidental ingestion of surface water and sediment; and inhalation of contaminant vapors. (Parsons, Focuses Feasibility Study,

Contaminants: Bis(2-Ethylhexyl)Phthalate 1.0 ug/L Cadmium and compounds 2.1 ug/L Lead 2.8 ug/L Vanadium 3.4 ug/L Barium 7.1 ug/L Copper and compounds 8.1 ug/L Manganese and compounds 14.2 ug/L Zinc 59.6 ug/L Aluminum 100.0 ug/L Iron 194.0 ug/L

Surface Water (Fresh): Low Risk

No ecological pathway. Other than potential changes in surface-water levels and change in pond flux, ecological thresholds established for surface-water bodies cannot be predicted by the ground-water flow model. (Parsons, Focused Feasibility Study July 1998, pg 8-20) Estimated

Contaminants: Bis(2-Ethylhexyl)Phthalate 1.0 ug/L Cadmium and compounds 2.1 ug/L Lead 2.8 ug/L Vanadium 3.4 ug/L Barium 7.1 ug/L Copper and compounds 8.1 ug/L Manganese and compounds 14.2 ug/L Zinc 59.6 ug/L Aluminum 100.0 ug/L Iron 194.0 ug/L

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Site ID: SS016

CS-4 WEST TRUCK ROAD MOTORPOOL

Spill Site Area

Cost

$1.67M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Dec 2005

This site is under ongoing monitoring until Sep 2027

Contaminated Areas

Groundwater: High Risk

CS-4 COCs = TCE @ 5.8 ug/L; PCE @ 26.9 ug/L ; 1,1,2,2-tetrachloroethane @ 7.2 ug/L; EDB @ ND (Otis/SS016) Contamination has been found in monitoring wells near the site. (CDMFPC, September 1994, Draft SI, pg 6-22, Figure 6-5) A plume containment system co Downgradient communities use the unconfined aquifer as a water supply. (CDMFPC, September 1994, Draft SI, pg 2-6) The installed treatment system is expected to be effective in extracting the contamination from the aquifer. A final remedy for the CS-4 grou

Contaminants: Ethylene Dibromide 0.0 ug/L Trichloroethylene (TCE) 5.8 ug/L 1,1,2,2-Tetrachloroethane 7.2 ug/L Tetrachloroethylene 29.6 ug/L

Sediment (Fresh): Low Risk

Sediments from the waste disposal pit and northern drainage swale appear to be affected by activities at this study area. (CDMFPC, September 1994, Draft SI, pg 6-21) The wast pit and surrounding area have been remediated (Draft CS-4 Remedial Action Report The CS-4 souce area has been remediated and impacted soil has been removed. (Draft CS-4 Remedial Action Report, May 2003)

Contaminants: Zinc 0.285 mg/kg

Sediment (Human): Low Risk

Sediments from the waste disposal pit and northern drainage swale appear to be affected by activities at this study area. (CDMFPC, September 1994, Draft SI, pg 6-21) The wast pit and surrounding area have been remediated (Draft CS-4 Remedial Action Report The CS-4 source area hase been remediated and impacted soil removed. (Draft CS-4 Remedial Action Report, May 2003)

Contaminants: Zinc 0.285 mg/kg

Soil: Low Risk

Soil excavation and thermal treatment were completed in 1997. (Jacobs, June 1999, SWOU FS, Table 1-1, pg 1-3) The source area was closed by an action memorandum; additional study has been requested by EPA at an area where a subsurface silt/clay lens may b Impacted soil at CS-4 has been remediated (Dreaft CS-4 Remedial Action Report, May 2003)

Contaminants: DDE 2.7e-06 mg/kg Xylene (Mixed) 4.0e-06 mg/kg DDD 5.1e-06 mg/kg Toluene 9.0e-06 mg/kg DDT 2.3e-05 mg/kg Chromium 0.0095 mg/kg Zinc 0.0979 mg/kg Aluminum 9.84 mg/kg

Surface Water: Low Risk

(Otis/SS016) Low levels of contaminants were detected in a surface water sample from the waste disposal pit. The CS-4 area, including waste pit, was excavated and remediated. No pit remains. (Draft CS-4 Remdial Action Report May 2003) The CS-4 source area has been excavated and remediated. (Draft CS-4 Remedial Actin Report, May, 2003)

Contaminants: Arsenic 2.2 ug/L Iron 502.0 ug/L

Surface Water (Fresh): Low Risk

(Otis/SS016) Low levels of contaminants were detected in a surface water sample from the waste disposal pit. The CS-4 area, including waste pit, was excavated and remediated. No pit remains. (Draft CS-4 Remdial Action Report May 2003) The CS-4 source area has been remediated (Draft CS-4 Remedial Action Report May 2003)

Contaminants: Arsenic 2.2 ug/L Iron 502.0 ug/L

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Site ID: FT055

FTA-1 (ASHUMET VALLEY)

Fire/Crash Training Area

Cost

$6.71M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 2009

This site is under ongoing monitoring until Sep 2032

Contaminated Areas

Groundwater: Low Risk

(Otis/FT055) A large contamination plume has been identified with this site. (ABB-ES, August 1994, Draft RI, pg 4-8, 4-23) Plume detached from source area - interim action has been running for 8 years. The contaminated aquifer is used by downgradient communities as a source of water. (ABB-ES, August 1994, Draft RI, pg 3-1, 3-1) AF has hooked up homes in area to town water.

Contaminants: Trichloroethylene (TCE) 13.7 ug/L 1,2-Dichloroethylene (cis) 30.0 ug/L Tetrachloroethylene 45.0 ug/L Manganese and compounds 356.0 ug/L

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Site ID: SS087

CS-23 PLUME

Contaminated Ground Water

Cost

$1.85M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2007

This site is under ongoing monitoring until Sep 2027

Contaminated Areas

Groundwater: High Risk

Detections of TCE and other solvents found in groundwater plume detached from unknown source area. Detections were initially on base in wooded, non-residential area. The receptor is classified as identified (high) because the aquifer is a sole source aquifer

Contaminants: 1,1,2,2,-Tetrachloroethylene 29.0 ug/L Trichloroethylene (TCE) 57.0 ug/L

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Site ID: SS042

FS-12 FUEL PIPELINE SPILL

Spill Site Area

Cost

$11.4M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2006

This site is under ongoing monitoring until Sep 2042

Contaminated Areas

Groundwater: High Risk

(Otis/SS042) The plume has been identified. (SWETS, May 12, 1995, ROD, pg 3-8) and hase moved off base. From October 1975 to May 1998 over 44,580 pounds of contaminants were removed by air sparging and vapor extraction. An extraction, treatment, and rein Downgradient drinking water supplies are threatened by the plume. (SWETS, May 12, 1995, ROD, pg 3-8). In 1999, AFCEE began hooking up residences to city water (RW, September 1999).

Contaminants: Benzene 16.6 ug/L 1,2-Dibromoethane 18.2 ug/L o-Xylene 290.0 ug/L m-Xylene 530.0 ug/L Toluene 776.0 ug/L Xylene (Mixed) 1921.0 ug/L

Soil: Low Risk

From October 1995 to May 1998 over 44,580 pounds of contaminants were removed by air sparging and vapor extraction. An extraction, treatement, and reinjection system was constructed in 1997 and is currently in operation. (Fact Sheet # 98-23, December 1998 No contamination detected, low potential for receptors to have access. (ASI, January 1995, RI, pg 162) The air sparging/soil venting system effectively removed all soil contamination. (RW, September 1999)

Contaminants: Methyl Ethyl Ketone 0.004 mg/kg

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Site ID: SS041

FS-11 (PFSA)

Spill Site Area

Cost

$1.96M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2001

This site is under ongoing monitoring until Sep 2037

Contaminated Areas

Sediment (Fresh): Medium Risk

(Otis/SS041) Contamination may be able to escape from the catch basins. (ABB-ES, November 1993, Draft RI, pg 5-1, 5-2) Base workers may have access to surface sediment during maintenance activities. Small mammals and birds have access to the site and may become contaminated. (ABB-ES, November 1993, Draft RI, pg 7-20)

Contaminants: Mercury 0.0009 mg/kg Benzene 0.0045 mg/kg Methyl Ethyl Ketone 0.0097 mg/kg 2-Methylnapthalene 0.013 mg/kg Ethyl benzene 0.026 mg/kg Lead 0.0373 mg/kg Zinc 0.0451 mg/kg Toluene 0.081 mg/kg Xylene (Mixed) 0.092 mg/kg Iron 3.94 mg/kg

Groundwater: Low Risk

(Otis/SS041) Plume is migrating downgradient. (ABB-ES, November 1993, Draft RI, pg 5-32, 5-37). Constituents not site related. Iron indicates bioattenuation is probably occuring. BST 24 Apr 97 The plume is threatening drinking water in the Briarwood subdivision in Ashumet Valley. (ABB-ES, August 1994, Sergou RI, pg 6-6)

Contaminants: Copper and compounds 1.9 ug/L Chromium 2.8 ug/L Nickel (soluble salts) 8.3 ug/L Zinc 15.0 ug/L Cobalt 17.9 ug/L Barium 68.3 ug/L Fluorine 90.0 ug/L Aluminum 120.0 ug/L Manganese and compounds 312.0 ug/L Nitrate 1260.0 ug/L Chlorine 7700.0 ug/L Iron 21200.0 ug/L

Sediment (Human): Low Risk

(Otis/SS041) Contamination may be able to escape from the catch basins. (ABB-ES, November 1993, Draft RI, pg 5-1, 5-2) Base workers have access to surface sediment during maintenance activities and may be exposed by dermal contact or inhalation. (ABB-ES, November 1993, Draft RI, pg 7-20)

Contaminants: Mercury 0.0009 mg/kg Benzene 0.0045 mg/kg Methyl Ethyl Ketone 0.0097 mg/kg 2-Methylnapthalene 0.013 mg/kg Ethyl benzene 0.026 mg/kg Lead 0.0373 mg/kg Zinc 0.0451 mg/kg Toluene 0.081 mg/kg Xylene (Mixed) 0.092 mg/kg Iron 3.94 mg/kg

Soil: Low Risk

Near-surface fuel-contaminated soil at Tanks 23 and 24 is estimated to be no more than 1,700 cubic yards. It is estimated that approximately 69,000 cubic yards of fuel-contaminated soil exists within the capillary-fringe/shallow ground water beneath PFSA/ Base workers may be exposed to soil during maintenance activities. (ABB-ES, November 1993, Draft RI, pg 7-19)

Contaminants: Xylene (Mixed) 0.0038 mg/kg Benzene 0.0045 mg/kg Naphthalene 0.0064 mg/kg Lead 0.0116 mg/kg Ethyl benzene 0.031 mg/kg Toluene 0.25 mg/kg Iron 8.81 mg/kg

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Site ID: SS082

FS-29 GROUNDWATER PLUME

Contaminated Ground Water

Cost

$1.29M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2006

This site is under ongoing monitoring until Sep 2027

Contaminated Areas

Groundwater: High Risk

The CS-20, CS-21, FS-28, and FS-29 plumes are detached from their source areas, which are unknown. (Jacobs, June 99, Final SWOU FS, pg 1-3) Residential areas hooked up to municiple water suppply, which limits the potential for exposure (AFCEE/MMR RPM 2003). The receptor is classified as identified (high) because the aquifer is a sole source aquifer

Contaminants: 1,2-Dibromoethane 0.14 ug/L Carbon tetrachloride 9.5 ug/L

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Site ID: SS077

CS-19 IMPACT RANGE CHEMICAL DUMPSITE

Spill Site Area

Cost

$2.68M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2009

This site is under ongoing monitoring until Sep 2037

Contaminated Areas

Groundwater: Low Risk

Supplemental RI of 2003 shows RDX groundwater plume moving west from the source area. The CS-19 groundwater plume is located in a sole-source aquifer; however, the plume is all on base in a highly restricted area where no future residences (in plume lifetime) are expected.

Contaminants: Octahydro-1,3,5,7-Tetranitro-1,3,5,7-Tetrazocine (HMX) 7.6 ug/L RDX 21.0 ug/L Nitrate 450.0 ug/L

Soil: Low Risk

The SI showed that nitroaromatic explosive residues had migrated to the water table in the immediate vicinity of the site. (AFCEE, March 1999, Five-Year Review Report, pg G-7) The study area is in an impact area with very limited access for human receptors, other than trespassers, who may be exposed by dermal contact with, or inhalation of, contaminated soils. (ABB-ES, November 1992, SA, pg 1-1 through 1-3)

Contaminants: RDX 0.051 mg/kg

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68 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: LF064

LF-3CG RUBBLE LANDFILL USCG

Landfill

Cost

Unknown

Final Cleanup Action

Aug 1990

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SD004

SD-4 STORM DRAIN DISP SITE NO. 4

Surface Disposal Area

Cost

$19K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Apr 2005

This site is under ongoing monitoring until Oct 2015

Contaminated Areas

Groundwater: Low Risk

SD-4 was one of three sites that were tentively linked to the Eastern Briarwood/Western Aquifarm plume, however, current data indicate no linkage, therfore SD-4 has no known groundwater component. (Draft Risk Assessement for Eastern Briarwood and Western Data suggest there is no No SD-4 groundwater component.

Contaminants: Trichloroethylene (TCE) 1.0 ug/L Beryllium and compounds 1.5 ug/L Arsenic 6.5 ug/L Bis(2-Ethylhexyl)Phthalate 11.0 ug/L Lead 17.4 ug/L 1,1,1-Trichloroethane 18.3 ug/L Chromium 36.8 ug/L Zinc 51.4 ug/L Toluene 78.3 ug/L Manganese and compounds 153.0 ug/L Barium 202.0 ug/L Xylene (Mixed) 440.0 ug/L Aluminum 11300.0 ug/L

Sediment (Fresh): Low Risk

A rscreening level risk assessment was performend with updated data, no human risk was founs. *Draft Revised Screening Level Ecological Risk Assessment for SD-4 (ECC, Jan. 2003) Small mammals and birds are receptors. (CDMFPC, September 1994, RI, pg 8-21)

Contaminants: Lead 0.0004 mg/kg Zinc 0.00088 mg/kg

Sediment (Human): Low Risk

A rscreening level risk assessment was performend with updated data, no human risk was founs. *Draft Revised Screening Level Ecological Risk Assessment for SD-4 (ECC, Jan. 2003) Trespassers are identified as a receptor to sediment. (CDMFPC, September 1994, RI, pg 8-21) Pond is on controled area of base. People are unlikely to ingest pond sediment.

Contaminants: Lead 0.0004 mg/kg Zinc 0.00088 mg/kg

Soil: Low Risk

Source Area Remediation Program has remediated SD-4 soil and soil in no longer a pathway. (Draft Revised Screening Level Ecological Risk Assessment for SD-4, Jan. 2003) Surce Area Remediation Program has remediated impacted SD-4 soils

Contaminants: Chloroform 7.0e-06 mg/kg Xylene (Mixed) 1.2e-05 mg/kg DDT 2.1e-05 mg/kg Dieldrin 0.00092 mg/kg Free cyanide 0.0012 mg/kg Naphthalene 0.0018 mg/kg Chrysene 0.0022 mg/kg Cadmium and compounds 0.0029 mg/kg Benzo(b)Fluoranthene 0.009 mg/kg Benzo(k)Fluoranthene 0.009 mg/kg Arsenic 0.0117 mg/kg Nickel (soluble salts) 0.0255 mg/kg Chromium 0.0534 mg/kg Manganese and compounds 0.0587 mg/kg Copper and compounds 0.158 mg/kg Zinc 0.194 mg/kg Lead 5.08 mg/kg

Surface Water: Low Risk

Surface water from SD-4 pond sampled. The National Recommended Water Quality Criteria for PCB of 0.014 ppb was exceeded in two sample at 0.027j and 0.064j. Trespassers are identified as a receptor to surface water at this site. The site is in a controled area. (CDMFPC, September 1994, RI, pg 8-21) People are not likely to drink from the pond.

Contaminants: Aroclor 1254 0.06 ug/L

Surface Water (Fresh): Low Risk

Surface water from SD-4 pond sampled. The National Recommended Water Quality Criteria for PCB of 0.014 ppb was exceeded in two sample at 0.027j and 0.064j. Trespassers are identified as a receptor to surface water at this site. Small mammals and birds are receptors. (CDMFPC, September 1994, RI, pg 8-21)

Contaminants: Aroclor 1254 0.06 ug/L

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Site ID: SD001

SD-1 STORM DRAIN DISP SITE NO. 1

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Aug 1993

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SD002

SD-2 STORM DRAIN DISP SITE NO. 2

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Aug 2002

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Sediment (Fresh): High Risk

(Otis/SD002) Contaminants present in drainage ditch may have been transported through the runway/aircraft maintenance ramp storm sewer system. (ABB-ES, August 1993, RI, pg 5-6) Drainage ditch discharges into Ashumet Pond which is used for recreational purposes and supports ecological receptors. (ABB-ES, August 1993, RI, pg 2-3)

Contaminants: Polychlorinated Biphenyls 0.00079 mg/kg Pyrene 0.0013 mg/kg Benzo(a)Pyrene 0.0021 mg/kg Benzo(k)Fluoranthene 0.0027 mg/kg Nickel (soluble salts) 0.008 mg/kg Copper and compounds 0.016 mg/kg Chromium 0.103 mg/kg Zinc 0.118 mg/kg Lead 0.677 mg/kg

Sediment (Human): High Risk

(Otis/SD002) Contaminants present in drainage ditch may have been transported through the runway/aircraft maintenance ramp storm sewer system. (ABB-ES, August 1993, RI, pg 5-6) Drainage ditch discharges into Ashumet Pond which is used for recreational purposes and supports ecological receptors. Exposure could occur by dermal contact with, and incidental ingestion of, contaminated sediment. (ABB-ES, August 1993, RI, pg 2-3)

Contaminants: Polychlorinated Biphenyls 0.00079 mg/kg Pyrene 0.0013 mg/kg Benzo(a)Pyrene 0.0021 mg/kg Benzo(k)Fluoranthene 0.0027 mg/kg Nickel (soluble salts) 0.008 mg/kg Copper and compounds 0.016 mg/kg Chromium 0.103 mg/kg Zinc 0.118 mg/kg Lead 0.677 mg/kg

Groundwater: Low Risk

(Otis/SD002) Horizontal migration of contaminants could occur during storm events. (ABB-ES, August 1993, RI, pg 7-3) Nearby residents may be exposed to contamination. (ABB-ES, August 1993, RI, pg 8-16,8-18)

Contaminants: 2,4-Dimethylphenol 2.0 ug/L Cadmium and compounds 7.2 ug/L Nickel (soluble salts) 41.8 ug/L

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Site ID: SD003

SD-3 STORM DRAIN DISP SITE NO. 3

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Mar 2002

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: High Risk

(Otis/SD003) VOCs detected in groundwater beneath the site across the MMR boundary. (ABB, August 1993, RI, pg 7-11) Receptors downgradient; nearby subdivision. (ABB, August 1993, RI, pg 2-1)

Contaminants: 1,1-Dichloroethylene 1.0 ug/L Trichloroethylene (TCE) 3.0 ug/L Tetrachloroethylene 6.0 ug/L Lead 8.4 ug/L 1,1,1-Trichloroethane 10.0 ug/L

Sediment (Fresh): High Risk

(Otis/SD003) Contaminated sediments have been found at this site and are exposed at the surface. (EJC, July 1991, Draft RI, pg 5-8) Access to this area is not restricted. (EJC, July 1991, Draft RI, pg 7-8)

Contaminants: Arsenic 9.0e-06 mg/kg Antimony and compounds 2.3e-05 mg/kg Chromium 0.000111 mg/kg Manganese and compounds 0.000443 mg/kg Naphthalene 0.00055 mg/kg Lead 0.000553 mg/kg Benzo(b)Fluoranthene 0.00056 mg/kg Chrysene 0.00077 mg/kg Pyrene 0.0015 mg/kg Zinc 0.00171 mg/kg Fluoranthene 0.0019 mg/kg Polychlorinated Biphenyls 0.0032 mg/kg Aluminum 0.00567 mg/kg Iron 0.0582 mg/kg

Sediment (Human): High Risk

(Otis/SD003) Contaminated sediments have been found at this site and are exposed at the surface. (EJC, July 1991, Draft RI, pg 5-8) Base workers and visitors may have access to this area and become exposed. (EJC, July 1991, Draft RI, pg 7-8)

Contaminants: Arsenic 9.0e-06 mg/kg Antimony and compounds 2.3e-05 mg/kg Chromium 0.000111 mg/kg Manganese and compounds 0.000443 mg/kg Naphthalene 0.00055 mg/kg Lead 0.000553 mg/kg Benzo(b)Fluoranthene 0.00056 mg/kg Chrysene 0.00077 mg/kg Pyrene 0.0015 mg/kg Zinc 0.00171 mg/kg Fluoranthene 0.0019 mg/kg Polychlorinated Biphenyls 0.0032 mg/kg Aluminum 0.00567 mg/kg Iron 0.0582 mg/kg

Soil: Medium Risk

An ecological primary risk assessment predicts adverse effects to plants and selected animals from metals in ditches and coal ash areas. Persons entering the AOCs could come into contact with soil. (ABB, August 1993, RI, pg ES-3, 2-2)

Contaminants: Naphthalene 0.0006 mg/kg Benzo(b)Fluoranthene 0.0016 mg/kg Chrysene 0.002 mg/kg Pyrene 0.0034 mg/kg Beryllium and compounds 0.0038 mg/kg Arsenic 0.009 mg/kg Polychlorinated Biphenyls 0.01 mg/kg Nickel (soluble salts) 0.0361 mg/kg Chromium 0.0366 mg/kg Barium 0.121 mg/kg

Surface Water: Medium Risk

(Otis/SD003) Contamination may be present at a point of exposure. Information is not sufficient to determine whether the pathway is evident or confined. (ECJ, July 1991, Draft RI, pg 7-1) Johns Pond and Ashumet Pond are located near site SD003. (ABB, August 1993, RI, pg 8-24)

Contaminants: Bromodichloromethane 2.7 ug/L Bromoform 3.2 ug/L Dibromochloromethane 3.8 ug/L Chloroform 4.9 ug/L Lead 5.5 ug/L 1,2-Dichlorobenzene 6.2 ug/L

Surface Water (Fresh): Medium Risk

(Otis/SD003) Contamination may be present at a point of exposure. Information is not sufficient to determine whether the pathway is evident or confined. (ECJ, July 1991, Draft RI, pg 7-1) Johns Pond, Ashumet Pond, and associated wildlife populations are located near site SD003. (ABB, August 1993, RI, pg 8-24)

Contaminants: Bromodichloromethane 2.7 ug/L Bromoform 3.2 ug/L Dibromochloromethane 3.8 ug/L Chloroform 4.9 ug/L Lead 5.5 ug/L 1,2-Dichlorobenzene 6.2 ug/L

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Site ID: SS013

CS-1 N. TRUCK RD MTR POOL

Spill Site Area

Cost

Unknown

Final Cleanup Action

Apr 1997

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Sediment (Fresh): Medium Risk

(Otis/SS013) Samples from all the catch basins at CS-1 indicate soil contamination. Surface water can percolate/infiltrate to groundwater. (CDM Fed. Prog. Corp., August 1993, Draft SI, pg 6-9). Closing with NFA. Drainage structure removed. Confirmatory sa Two ponds adjacent to MMR (Johns and Ashunet). (CDM Fed. Prog. Corp., August 1993, Draft SI, pg 1-10)

Contaminants: Heptachlor Epoxide 0.0011 mg/kg Lead 0.0021 mg/kg Dieldrin 0.0033 mg/kg Benzene 0.0071 mg/kg o-Xylene 0.11 mg/kg Toluene 0.14 mg/kg Ethyl benzene 0.2 mg/kg Xylene (Mixed) 0.75 mg/kg

Surface Water (Fresh): Medium Risk

(Otis/SS013) Surface water can percolate/infiltrate to groundwater. (CDM Fed. Prog. Corp., August 1993, Draft SI, pg 6-11). Closing with NFA. Drainage structure removed. Confirmatory samples clean. BST 24 Apr 97 Two ponds adjacent to MMR support human recreation. Ecological receptors may be at risk from contaminants at the site. (CDM Fed. Prog. Corp., August 1993, Draft SI, pg 5-74, 5-56, 5-81)

Contaminants: Zinc 300000.0 ug/L

Groundwater: Low Risk

(Otis/SS013) Wells placed downgradient of the sites in the future may be impacted by chemicals migrating in groundwater. These chemicals may migrate to off-site wells in the future. (CDM Fed. Prog. Corp., August 1993, Draft SI, pg 5-82, 5-299). Closing wi There are no drinking water wells currently present within the area of the site. There are downgradient groundwater wells located offsite. (CDM Fed. Prog. Corp., August 1993, Draft SI, pg 1-8)

Contaminants: Bis(2-Ethylhexyl)Phthalate 13.0 ug/L Barium 15.3 ug/L Acetone 20.0 ug/L Vanadium 122.0 ug/L Zinc 163.0 ug/L Nickel (soluble salts) 170.0 ug/L Chromium 362.0 ug/L Aluminum 58300.0 ug/L Iron 108000.0 ug/L

Sediment (Human): Low Risk

(Otis/SS013) Samples from all the catch basins at CS-1 indicate soil contamination. Surface water can percolate/infiltrate to groundwater. (CDM Fed. Prog. Corp., August 1993, Draft SI, pg 6-9). Closing with NFA. Drainage structure removed. Confirmatory sa Two ponds adjacent to MMR (Johns and Ashunet) and recreational human use. (CDM Fed. Prog. Corp., August 1993, Draft SI, pg 1-10)

Contaminants: Heptachlor Epoxide 0.0011 mg/kg Lead 0.0021 mg/kg Dieldrin 0.0033 mg/kg Benzene 0.0071 mg/kg o-Xylene 0.11 mg/kg Toluene 0.14 mg/kg Ethyl benzene 0.2 mg/kg Xylene (Mixed) 0.75 mg/kg

Soil: Low Risk

Ecological PRE indicate ecological receptors (i.e., mouse, vole, shrew, birds) may be at potential risk from contaminants present at the site. Potential human receptors are occupational populations due to heavily guarded fence and area. (ABB, August 1993,

Contaminants: Methyl Chloride 4.7e-06 mg/kg Toluene 1.0e-05 mg/kg Dieldrin 0.00018 mg/kg Anthracene 0.00019 mg/kg Dibenz[ah]anthracene 0.0004 mg/kg Free cyanide 0.00065 mg/kg Indeno(1,2,3-cd)Pyrene 0.00081 mg/kg Cadmium and compounds 0.0012 mg/kg Chrysene 0.0014 mg/kg Benzo(a)Pyrene 0.0016 mg/kg Pyrene 0.0017 mg/kg Antimony and compounds 0.0027 mg/kg Benzo(b)Fluoranthene 0.003 mg/kg Benzo(k)Fluoranthene 0.003 mg/kg Arsenic 0.0042 mg/kg Chromium 0.0162 mg/kg Barium 0.0426 mg/kg Lead 0.131 mg/kg Iron 15.0 mg/kg

Surface Water: Low Risk

(Otis/SS013) Surface water can percolate/infiltrate to groundwater. (CDM Fed. Prog. Corp., August 1993, Draft SI, pg 6-11). Closing with NFA. Drainage structure removed. Confirmatory samples clean. BST 24 Apr 97 Two ponds adjacent to MMR support human recreation. Ecological receptors may be at risk from contaminants at the site. (CDM Fed. Prog. Corp., August 1993, Draft SI, pg 5-74, 5-56, 5-81)

Contaminants: Zinc 300000.0 ug/L

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Site ID: SS015

CS-3 S. TRUCK ROAD MOTOR POOL

Spill Site Area

Cost

Unknown

Final Cleanup Action

May 1997

Contaminated Areas

Groundwater: Low Risk

(Otis/SS015) Low levels of contamination have been found in monitoring wells near the source. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation reviewed by Radian, August 18, 1995, pg 5-4). Fe, As, Mn not related to si Both human and ecological receptors are identified. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation reviewed by Radian, August 18, 1995, pg 5-25)

Contaminants: Cadmium and compounds 4.3 ug/L Arsenic 9.7 ug/L Bis(2-Ethylhexyl)Phthalate 11.0 ug/L Manganese and compounds 364.0 ug/L Aluminum 609.0 ug/L Iron 11300.0 ug/L

Sediment (Fresh): Low Risk

(Otis/SS015) Sediment pathway was not evaluated. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation reviewed by Radian, August 18, 1995). Low RR. BST 24 Apr 97 Sediment receptors were not evaluated. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation reviewed by Radian, August 18, 1995)

Contaminants: Dieldrin 0.00028 mg/kg Zinc 0.0012 mg/kg Lead 0.0013 mg/kg Benzene 0.0016 mg/kg Toluene 0.018 mg/kg Ethyl benzene 0.032 mg/kg o-Xylene 0.066 mg/kg Xylene (Mixed) 0.14 mg/kg

Sediment (Human): Low Risk

(Otis/SS015) Sediment pathway was not evaluated. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation reviewed by Radian, August 18, 1995). Low RR. BST 24 Apr 97 Sediment receptors were not evaluated. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation reviewed by Radian, August 18, 1995)

Contaminants: Dieldrin 0.00028 mg/kg Zinc 0.0012 mg/kg Lead 0.0013 mg/kg Benzene 0.0016 mg/kg Toluene 0.018 mg/kg Ethyl benzene 0.032 mg/kg o-Xylene 0.066 mg/kg Xylene (Mixed) 0.14 mg/kg

Soil: Low Risk

The site is not currently restricted and can be accessed by both workers and trespassers who may be exposed by dermal contact with, or inhalation of, contaminated soil. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation

Contaminants: DDT 1.9e-05 mg/kg Chrysene 0.00031 mg/kg Pyrene 0.0004 mg/kg Benzo(b)Fluoranthene 0.00045 mg/kg Fluoranthene 0.00053 mg/kg Benzo(k)Fluoranthene 0.0006 mg/kg Arsenic 0.0025 mg/kg Zinc 0.028 mg/kg Chromium 0.031 mg/kg Lead 0.037 mg/kg Iron 12.4 mg/kg

Surface Water: Low Risk

(Otis/SS015) Surface water pathways were not evaluated. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation reviewed by Radian, August 18, 1995, pg 5-25). Very low rr. BST 24 Apr 97 Surface water receptors were not evaluated. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation reviewed by Radian, August 18, 1995, pg 5-12)

Contaminants: o-Xylene 5.6 ug/L Toluene 5.9 ug/L

Surface Water (Fresh): Low Risk

(Otis/SS015) Surface water pathways were not evaluated. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation reviewed by Radian, August 18, 1995, pg 5-25). Very low rr. BST 24 Apr 97 Surface water receptors were not evaluated. (Unknown Title, Author, and Date, IRP Office file at Otis, Preliminary Risk Evaluation reviewed by Radian, August 18, 1995, pg 5-12)

Contaminants: o-Xylene 5.6 ug/L Toluene 5.9 ug/L

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Site ID: SS017

CS-5 FORMER REFUELER MAINT SHOP

Spill Site Area

Cost

Unknown

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until May 2014

Contaminated Areas

Sediment (Fresh): High Risk

(Otis/SS017) Surface water or sump contamination is present outside the sumps in the surface soil and can potentially migrate offsite via groundwater. (ABB, October 1992, Sump Removal Action Program, pg 3-17) Groundwater is a sole-source aquifer used as drinking water on and offbase. Birds and mammals are identified as ecological receptors. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19)

Contaminants: Tetrachloroethylene 0.031 mg/kg Toluene 0.033 mg/kg Xylene (Mixed) 0.15 mg/kg Bis(2-Ethylhexyl)Phthalate 0.33 mg/kg Lead 94.0 mg/kg

Sediment (Human): High Risk

(Otis/SS017) Surface water or sump contamination is present outside the sumps in the surface soil and can potentially migrate offsite via groundwater. (ABB, October 1992, Sump Removal Action Program, pg 3-17) Groundwater is a sole-source aquifer used as drinking water on and offbase. Birds and mammals are identified as ecological receptors. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19)

Contaminants: Tetrachloroethylene 0.031 mg/kg Toluene 0.033 mg/kg Xylene (Mixed) 0.15 mg/kg Bis(2-Ethylhexyl)Phthalate 0.33 mg/kg Lead 94.0 mg/kg

Soil: High Risk

On-site workers and trespassers have access to site and may be exposed by dermal contact with, or incidental inhalation/ingestion of contaminated soil.. (ABB, October 1993, Priority 2 & 3 SI, pg 9-9)

Contaminants: Tetrachloroethylene 0.00016 mg/kg Heptachlor Epoxide 0.00022 mg/kg Bis(2-Ethylhexyl)Phthalate 0.00027 mg/kg Chlordane 0.00066 mg/kg Methylene Chloride 0.001 mg/kg Polychlorinated Biphenyls 0.017 mg/kg Chromium 0.0817 mg/kg Manganese and compounds 0.133 mg/kg Barium 0.286 mg/kg Zinc 0.331 mg/kg Lead 7.65 mg/kg

Surface Water: High Risk

(Otis/SS017) Contaminants detected in surface water in sump that has surrounding soil contamination which indicates migration. (ABB, October 1992, Sump Removal Action Program, pg 3-17) Downgradient human recreational and drinking water use of surface water and groundwater. Birds and mammals identified as ecological receptors. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19)

Contaminants: Phenanthrene 9.0 ug/L Bis(2-Ethylhexyl)Phthalate 38.0 ug/L Lead 170.0 ug/L Ethylbenzene 780.0 ug/L Toluene 1900.0 ug/L Xylene (Mixed) 3800.0 ug/L

Surface Water (Fresh): High Risk

(Otis/SS017) Contaminants detected in surface water in sump that has surrounding soil contamination which indicates migration. (ABB, October 1992, Sump Removal Action Program, pg 3-17) Downgradient human recreational drinking water use of surface water and groundwater. Birds and mammals identified as ecological receptors. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19)

Contaminants: Phenanthrene 9.0 ug/L Bis(2-Ethylhexyl)Phthalate 38.0 ug/L Lead 170.0 ug/L Ethylbenzene 780.0 ug/L Toluene 1900.0 ug/L Xylene (Mixed) 3800.0 ug/L

Groundwater: Low Risk

(Otis/SS017) Contaminants in gw wells in 4/93 indicate gw movement to SW. (ABB, October 1993, Priority 2 & 3 SI, pg 9-3). Risk ratios very low. Consituents identified as risk drivers not related to site uses. BST 24 Apr 97 On- and off-base residents, aquifer used as sole-source drinking water downgradient. (ABB, October 1993, Priority 2 & 3 SI, pg 1-18)

Contaminants: Chloroform 1.0 ug/L Methylene Chloride 6.0 ug/L Manganese and compounds 6.5 ug/L Barium 17.0 ug/L

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Site ID: SS019

CS-7 OMS-6 BLDG 2806

Storage Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS020

CS-8 OMS-22 (S-2)

Spill Site Area

Cost

Unknown

Final Cleanup Action

Jan 1996

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS023

CS-11 PESTICIDE SHOP,ARNG/ANG

Spill Site Area

Cost

Unknown

Final Cleanup Action

Apr 2002

This site is under ongoing monitoring until May 2014

Contaminated Areas

Soil: Low Risk

The site is located outside of the airstrip security zone. Future residential receptors include on-base workers and trespassers. (ABB, October 1993, Priority 2 & 3 SI, pg 19-5)

Contaminants: Methyl Ethyl Ketone 4.0e-06 mg/kg Methylene Chloride 6.0e-06 mg/kg Heptachlor 5.2e-05 mg/kg Methoxychlor 0.00052 mg/kg Free cyanide 0.0022 mg/kg Dieldrin 0.0027 mg/kg Chromium 0.0956 mg/kg Zinc 0.15 mg/kg Copper and compounds 0.231 mg/kg Lead 0.276 mg/kg

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Site ID: SS024

CS-12 VA CEMET. RDS&GNDS SHOP

Spill Site Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS025

DRUM DISPOSAL OPERABLE UNIT

Spill Site Area

Cost

Unknown

Final Cleanup Action

Mar 2000

This site is under ongoing monitoring until May 2014

Contaminated Areas

Groundwater: Medium Risk

Ground-water flow direction is to the south toward the MMR flight line area and the vicinity of SD-5. CS-13 is located upgradient of Well J, the major supply well serving the MMR community since 1985. (HAZWRAP, January 1990, SI, Vol. I, IRP Task 2-3B, pg Since CS-13 is located upgradient of Well J, the major supply well serving the MMR community since 1985, human receptors are assumed. (HAZWRAP, January 1990, SI, Vol. I, IRP Task 2-3B, pg 7-8)

Contaminants: Benzene 1.0 ug/L 1,1,1-Trichloroethane 1.0 ug/L Bromodichloromethane 1.0 ug/L Xylene (Mixed) 2.0 ug/L Bromoform 2.0 ug/L Dibromochloromethane 3.0 ug/L Methylene Chloride 3.0 ug/L Bis(2-Ethylhexyl)Phthalate 12.0 ug/L Lead 2100.0 ug/L Copper and compounds 7700.0 ug/L Arsenic 13600.0 ug/L Zinc 28100.0 ug/L Barium 29500.0 ug/L Manganese and compounds 191000.0 ug/L Iron 824000.0 ug/L Aluminum 1770000.0 ug/L

Soil: Low Risk

Drums containing hardened paint, waste oil, and an unknown oily substance were stored at the site from approximately 1954 to 1984. In 1984, approximately 110 drums were removed from the site by DEQE. Wastes in the drums were never completely characterized Soil samples at or below the water table detected trace amounts of DCE, TCE, and PCE at concentrations less than 1ppm. (HAZWRAP, January 1990, SI, Vol. I, IRP Task 2-3B, pg 7-6)

Contaminants: Heptachlor Epoxide 1.1e-07 mg/kg DDD 1.1e-07 mg/kg BHC 1.5e-07 mg/kg Aldrin 2.2e-07 mg/kg Chlordane 5.1e-07 mg/kg Endrin 7.0e-07 mg/kg Methoxychlor 1.6e-06 mg/kg Endosulfan 1.9e-06 mg/kg Chloroform 2.0e-06 mg/kg DDE 3.3e-06 mg/kg DDT 3.9e-06 mg/kg Dieldrin 2.2e-05 mg/kg Benzo(a)Pyrene 7.1e-05 mg/kg Benz(a)Anthracene 8.8e-05 mg/kg Benzo(b)Fluoranthene 0.00019 mg/kg Benzo(k)Fluoranthene 0.00019 mg/kg Chrysene 0.00025 mg/kg Fluoranthene 0.00044 mg/kg Pyrene 0.00045 mg/kg Selenium 0.0014 mg/kg Chromium 0.0166 mg/kg Lead 0.0225 mg/kg Copper and compounds 0.0231 mg/kg Vanadium 0.029 mg/kg Arsenic 0.041 mg/kg Barium 0.0586 mg/kg Zinc 0.223 mg/kg Manganese and compounds 1.15 mg/kg Aluminum 13.1 mg/kg Iron 17.5 mg/kg

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Site ID: SS027

CS-15 FORMER ENGINE RUNUP AREA

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 2000

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Sediment (Fresh): High Risk

(Otis/SS027) Surface water can infiltrate to gw through porous soil. Intermittent surface water drainage to S. of site. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19, 12-3) Contaminanats not seenin groundwater, indicates containment. bST 24 Apr 97 Downgradient groundwater and surface water users are identified. Mammals and birds have been identified as ecological receptors. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19)

Contaminants: Nickel (soluble salts) 0.00013 mg/kg Barium 0.0191 mg/kg Chrysene 0.024 mg/kg Phenanthrene 0.025 mg/kg Fluoranthene 0.037 mg/kg Chromium 0.5 mg/kg Aluminum 5.24 mg/kg Lead 7.33 mg/kg

Sediment (Human): Medium Risk

(Otis/SS027) Surface water can infiltrate to gw through porous soil. Intermittent surface water drainage to S. of site. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19, 12-3) Contaminanats not seenin groundwater, indicates containment. bST 24 Apr 97 Base maintenance workers could contact sediments. (ABB, October 1993, Priority 2 & 3 SI, pg 1-17, 1-19)

Contaminants: Nickel (soluble salts) 0.00013 mg/kg Barium 0.0191 mg/kg Chrysene 0.024 mg/kg Phenanthrene 0.025 mg/kg Fluoranthene 0.037 mg/kg Chromium 0.5 mg/kg Aluminum 5.24 mg/kg Lead 7.33 mg/kg

Groundwater: Low Risk

(Otis/SS027) Contaminants are migrating offsite in groundwater. (ABB, October 1993, Priority 2 & 3 SI, pg 12-6). Very low RR. Risk drivers not related to site uses, indicate biodegradationis occuring. BST 24 Apr 97 Downgradient groundwater and surface water users are identified drinking water users of the sole source aquifer. Wildlife areas are downgradient. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19)

Contaminants: Copper and compounds 11.8 ug/L Manganese and compounds 12.1 ug/L Aluminum 13.3 ug/L Barium 27.1 ug/L

Soil: Low Risk

Site located inside secured zone flightline. Future workers, small mammals and birds are ecological receptors. Downgradient groundwater and surface water users. (ABB, October 1993, Priority 2 & 3 SI, pg 12-9)

Contaminants: Dieldrin 0.00094 mg/kg Indeno(1,2,3-cd)Pyrene 0.0017 mg/kg Benzo(k)Fluoranthene 0.0017 mg/kg Benzo(a)Pyrene 0.002 mg/kg Benzo(b)Fluoranthene 0.0023 mg/kg Chrysene 0.0025 mg/kg Polychlorinated Biphenyls 0.003 mg/kg Chromium 0.0148 mg/kg Lead 0.0855 mg/kg Zinc 0.198 mg/kg

Surface Water: Low Risk

(Otis/SS027) Surface water can percolate or infiltrate through porous soil to groundwater. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19). Zn only, extremely low RR. BST 24 Apr 97 Downgradient drinking water users of groundwater and recreational users of downgradient surface water. Ecological receptors include mammals and birds. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19)

Contaminants: Zinc 120.0 ug/L

Surface Water (Fresh): Low Risk

(Otis/SS027) Surface water can percolate or infiltrate through porous soil to groundwater. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19). Zn only, extremely low RR. BST 24 Apr 97 Downgradient drinking water users of groundwater and recreational users of downgradient surface water. Ecological receptors include mammals and birds. (ABB, October 1993, Priority 2 & 3 SI, pg 1-19)

Contaminants: Zinc 120.0 ug/L

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Site ID: SS032

FS-2 RAILYARD FUEL PUMP STATION

Spill Site Area

Cost

Unknown

Final Cleanup Action

Feb 2001

Contaminated Areas

Groundwater: High Risk

(Otis/SS032) Contamination plume detected in monitoring wells. (ABB-ES, December 1991, FS, pg 3-1, 3-3) Ground-water remedial actions are being addressed trhough the Southwest Operable Unit. (AFCEE, March 1999, Five-Year Review Report, pg G-10) Residents live downgradient of the site and are potentially threatened by the contaminant plume. (ABB-ES, December 1991, FS, pg 4-1)

Contaminants: Ethylene Dibromide 0.01 ug/L Mercury (Methyl) 0.84 ug/L Chloromethane 1.0 ug/L Trichloroethylene (TCE) 1.5 ug/L PCE 1.9 ug/L Toluene 2.0 ug/L Xylene (Mixed) 3.0 ug/L Bromodichloromethane 3.0 ug/L Methyl Ethyl Ketone 3.0 ug/L Dibenzofuran 4.0 ug/L Indeno(1,2,3-cd)Pyrene 4.0 ug/L Silver and compounds 5.0 ug/L Acenaphthene 5.0 ug/L Fluorene 5.0 ug/L Benz(a)Anthracene 6.0 ug/L Fluoranthene 8.0 ug/L Bis(2-Ethylhexyl)Phthalate 9.0 ug/L Chrysene 9.0 ug/L Isophorone 10.0 ug/L Pyrene 11.0 ug/L Di-n-Octyl Phthalate 13.0 ug/L N-Nitrosodiphenylamine 15.0 ug/L Arsenic 28.5 ug/L Cyanide (free) 41.9 ug/L Naphthalene 48.0 ug/L Chloroform 55.0 ug/L 2-Methylnaphthalene 72.0 ug/L Beryllium and compounds 150.0 ug/L Cobalt 400.0 ug/L Cadmium and compounds 850.0 ug/L Nickel (soluble salts) 1200.0 ug/L Chromium 1800.0 ug/L Vanadium 1950.0 ug/L Copper and compounds 2750.0 ug/L Manganese and compounds 3650.0 ug/L Barium 3900.0 ug/L Lead 7700.0 ug/L Chlorine 13400.0 ug/L Aluminum 121000.0 ug/L Zinc 128000.0 ug/L Iron 3030000.0 ug/L

Soil: Low Risk

On May 8, 1996, the two areas where PAHs were detected in soil samples were excavated generating 520 cubic yards of contaminated soil. The excavated soils were transferred to an onsite asphalt batching facility constructed and operated during the Drainage Trespassers could gain access to this site and become exposed by dermal contact with, or inhalation of, contaminated soils. (ABB-ES, December 1991, FS, pg 4-2) Based on the baseline risk assessment and the soil removals in 1996, there are no human health

Contaminants: Beryllium and compounds 1.7e-06 mg/kg Acetone 4.0e-06 mg/kg Silver and compounds 6.0e-06 mg/kg Methylene Chloride 6.0e-06 mg/kg Chlordane 6.7e-06 mg/kg Endrin 7.3e-06 mg/kg Endosulfan 1.3e-05 mg/kg BHC 1.6e-05 mg/kg 4,4-DDE 1.6e-05 mg/kg Butyl Benzyl Phthalate 2.6e-05 mg/kg Arsenic 6.46e-05 mg/kg 4,4-DDD 6.6e-05 mg/kg Cadmium and compounds 8.71e-05 mg/kg Cyanide (free) 0.00017 mg/kg Mercury (Methyl) 0.00032 mg/kg Selenium 0.00033 mg/kg Antimony and compounds 0.000489 mg/kg Carbazole 0.00078 mg/kg Dieldrin 0.00082 mg/kg Methoxychlor 0.00086 mg/kg 4,4-DDT 0.00091 mg/kg Bis(2-Ethylhexyl)Phthalate 0.0015 mg/kg Dibenz[ah]anthracene 0.0026 mg/kg Cobalt 0.0033 mg/kg Anthracene 0.006 mg/kg Benzene 0.0061 mg/kg Di-n-Octyl Phthalate 0.0098 mg/kg Aluminum 0.0112 mg/kg Nickel (soluble salts) 0.0136 mg/kg Aroclor 1254 0.015 mg/kg Fluorene 0.016 mg/kg Pentachlorophenol 0.017 mg/kg Chromium 0.0193 mg/kg Trichloroethylene (TCE) 0.021 mg/kg 1,1,2,2-Tetrachloroethane 0.022 mg/kg Barium 0.0243 mg/kg Dibenzofuran 0.026 mg/kg Chlorobenzene 0.027 mg/kg Acenaphthene 0.031 mg/kg Indeno(1,2,3-cd)Pyrene 0.035 mg/kg Benzo(b)Fluoranthene 0.035 mg/kg Benz(a)Anthracene 0.037 mg/kg Iron 0.0371 mg/kg Chrysene 0.038 mg/kg Pyrene 0.04 mg/kg Benzo(a)Pyrene 0.043 mg/kg Benzo(k)Fluoranthene 0.048 mg/kg Fluoranthene 0.052 mg/kg Zinc 0.0553 mg/kg Copper and compounds 0.0567 mg/kg Vanadium 0.0612 mg/kg Chloroform 0.067 mg/kg PCE 0.094 mg/kg Manganese and compounds 0.0942 mg/kg Toluene 0.11 mg/kg Ethyl benzene 0.12 mg/kg 1,2-Dichloroethene 0.14 mg/kg Naphthalene 0.21 mg/kg Lead 0.268 mg/kg 2-Methylnaphthalene 0.39 mg/kg Xylene (Mixed) 0.72 mg/kg

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Site ID: SS035

FS-5 AQUA FARM APRON AREA

Spill Site Area

Cost

Unknown

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: High Risk

(Otis/SS035) Three distinct contaminant plumes are associated with this site. (ABB-ES, November 1992, Draft RI, pg 2-16) Domestic water sources (Briarwood subdivision) and recreational areas (Johns and Ashumet Ponds) are threatened by this site. (ABB-ES, November 1992, Draft RI, pg 2-15, 2-17)

Contaminants: Benzene 1.0 ug/L Tetrachloroethylene 6.0 ug/L Toluene 14.0 ug/L Bis(2-Ethylhexyl)Phthalate 53.0 ug/L Trichloroethylene (TCE) 220.0 ug/L Xylene (Mixed) 900.0 ug/L Cadmium and compounds 8200.0 ug/L Lead 11000.0 ug/L Arsenic 11900.0 ug/L Iron 25900000.0 ug/L

Soil: Medium Risk

Most buildings at the site are not in use and the area is under surveillance. (ABB-ES, November 1992, Draft RI, pg 2-1)

Contaminants: DDT 2.6e-05 mg/kg Acetone 2.8e-05 mg/kg Ethyl benzene 4.0e-05 mg/kg Dieldrin 5.2e-05 mg/kg Fluorene 0.00059 mg/kg Benzo(k)Fluoranthene 0.0011 mg/kg Benzo(a)Pyrene 0.0013 mg/kg Benzo(b)Fluoranthene 0.0015 mg/kg Cadmium and compounds 0.0026 mg/kg Arsenic 0.0032 mg/kg Polychlorinated Biphenyls 0.0035 mg/kg Chrysene 0.01 mg/kg Fluoranthene 0.02 mg/kg Bis(2-Ethylhexyl)Phthalate 0.032 mg/kg Chromium 0.311 mg/kg Zinc 0.478 mg/kg Lead 0.881 mg/kg Aluminum 6.77 mg/kg

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Site ID: SS036

FS-6 AIRFIELD APRON

Spill Site Area

Cost

Unknown

Final Cleanup Action

Aug 2002

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Sediment (Fresh): Medium Risk

(Otis/SS036) Contaminants present in the drainage ditch may have been transported through the runway/aircraft maintenance ramp storm sewer system. (ABB-ES, August 1993, RI, pg 5-6) Drainage ditch discharges into Ashumet Pond, which is used for recreational purposes and supports ecological receptors. (ABB-ES, August 1993, RI, pg 2-3)

Contaminants: Endosulfan 3.8e-07 mg/kg DDD 6.3e-07 mg/kg Methoxychlor 1.8e-06 mg/kg Arsenic 0.0016 mg/kg Vanadium 0.0036 mg/kg Lead 0.0053 mg/kg Manganese and compounds 0.025 mg/kg Aluminum 0.868 mg/kg Iron 2.25 mg/kg

Sediment (Human): Medium Risk

(Otis/SS036) Contaminants present in the drainage ditch may have been transported through the runway/aircraft maintenance ramp storm sewer system. (ABB-ES, August 1993, RI, pg 5-6) Drainage ditch discharges into Ashumet Pond, which is used for recreational purposes and supports ecological receptors. (ABB-ES, August 1993, RI, pg 2-3)

Contaminants: Endosulfan 3.8e-07 mg/kg DDD 6.3e-07 mg/kg Methoxychlor 1.8e-06 mg/kg Arsenic 0.0016 mg/kg Vanadium 0.0036 mg/kg Lead 0.0053 mg/kg Manganese and compounds 0.025 mg/kg Aluminum 0.868 mg/kg Iron 2.25 mg/kg

Groundwater: Low Risk

(Otis/SS036) Horizontal migration of contaminants would occur during storm events. (ABB-ES, August 1993, RI, pg 7-3). RR low. GW indicates minimal transportation of organics. BST 24 Apr 97 Nearby residents and trespassers may be exposed to groundwater contamination. (ABB-ES, August 1993, RI, pg 8-16, 8-18)

Contaminants: 2,4-Dimethylphenol 2.0 ug/L Cadmium and compounds 7.2 ug/L Nickel (soluble salts) 41.8 ug/L Iron 1050.0 ug/L

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Site ID: SS037

FS-7 CURRENT PRODUCT TANK 115

Spill Site Area

Cost

Unknown

Final Cleanup Action

Jul 2001

This site is under ongoing monitoring until May 2014

Contaminated Areas

Groundwater: Low Risk

(Otis/SS037) FS-7 is in the center of CS-10 plume with concentrations of total chlorinated solvents at <100 ppb. (ABB, October 1993, SI, Vol IV, T-20-11). Constituents identfiedas driving risk (iron) not consistent with site uses. Indicate biodegradation Drinking water wells are located downgradient of the site. (ANEPTEK, August 1995, SI, pg 6-13)

Contaminants: Naphthalene 30.0 ug/L Ethyl benzene 120.0 ug/L Xylene (Mixed) 150.0 ug/L Fluorene 160.0 ug/L Acenaphthene 270.0 ug/L Iron 24100.0 ug/L

Soil: Low Risk

On- and off-site residents/trespassers, on-site workers, mammals and birds, cranberry bogs, ponds, sole source drinking water aquifer for MMR and surrounding residents. (ANEPTEK, August 1995, SI, pg 6-29, 6-13 through 6-15)

Contaminants: Toluene 7.0e-06 mg/kg Fluorene 0.00016 mg/kg Acenaphthene 0.00027 mg/kg Anthracene 0.00031 mg/kg Hexachlorobenzene 0.00062 mg/kg Indeno(1,2,3-cd)Pyrene 0.00062 mg/kg Benzo(k)Fluoranthene 0.00081 mg/kg Benzo(a)Pyrene 0.00086 mg/kg Benzo(b)Fluoranthene 0.00091 mg/kg Chrysene 0.0011 mg/kg Nickel (soluble salts) 0.0064 mg/kg Chromium 0.0241 mg/kg Barium 0.0798 mg/kg Lead 0.0877 mg/kg Aluminum 8.99 mg/kg

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Site ID: SS038

FS-8 AIRFIELD APRON

Spill Site Area

Cost

Unknown

Final Cleanup Action

Aug 2002

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Sediment (Fresh): High Risk

(Otis/SS038) Contaminants present in the drainage ditch may have been transported through the runway/aircraft maintenance ramp storm sewer system. (ABB-ES, August 1993, RI, pg 5-6) Drainage ditch discharges into Ashumet Pond, which is used for recreational purposes and supports ecological receptors. (ABB-ES, August 1993, RI, pg 2-3)

Contaminants: Polychlorinated Biphenyls 0.00079 mg/kg Pyrene 0.0013 mg/kg Copper and compounds 0.0016 mg/kg Benzo(a)Pyrene 0.0021 mg/kg Nickel (soluble salts) 0.008 mg/kg Chromium 0.103 mg/kg Zinc 0.118 mg/kg Lead 0.677 mg/kg

Sediment (Human): High Risk

(Otis/SS038) Contaminants present in the drainage ditch may have been transported through the runway/aircraft maintenance ramp storm sewer system. (ABB-ES, August 1993, RI, pg 5-6) Drainage ditch discharges into Ashumet Pond, which is used for recreational purposes and supports ecological receptors. (ABB-ES, August 1993, RI, pg 2-3)

Contaminants: Polychlorinated Biphenyls 0.00079 mg/kg Pyrene 0.0013 mg/kg Copper and compounds 0.0016 mg/kg Benzo(a)Pyrene 0.0021 mg/kg Nickel (soluble salts) 0.008 mg/kg Chromium 0.103 mg/kg Zinc 0.118 mg/kg Lead 0.677 mg/kg

Groundwater: Low Risk

(Otis/SS038) Horizontal migration of contaminants could occur during storm events. (ABB-ES, August 1993, RI, pg 7-3). Very low RR. GW indicates minimal transportation of organics. BST 24 Apr 97 Nearby residents and trespassers may be exposed to groundwater contamination. (ABB-ES, August 1993, RI, pg 8-16, 8-18)

Contaminants: 2,4-Dimethylphenol 2.0 ug/L Cadmium and compounds 7.2 ug/L Nickel (soluble salts) 41.8 ug/L Iron 1050.0 ug/L

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Site ID: SS039

FS-9 CURRENT PRODUCT TANK 108

Spill Site Area

Cost

Unknown

Final Cleanup Action

Jun 2001

Contaminated Areas

Groundwater: High Risk

(Otis/SS039) Contamination present in monitoring wells downgradient from source. (CDMFPC, July 1994, Draft RI, pg 6-57) Communities downgradient from the site may be threatened by the contaminant plume. (CDMFPC, July 1994, Draft RI, pg 8-29, 8-30)

Contaminants: Arsenic 5.2 ug/L Copper and compounds 29.2 ug/L Lead 41.2 ug/L Chromium 85.7 ug/L Zinc 114.0 ug/L Aluminum 13100.0 ug/L Iron 29200.0 ug/L

Sediment (Fresh): High Risk

(Otis/SS039) Contaminants present in drainage ditch downgradient from the source. (CDMFPC, July 1994, Draft RI, Figure 6-4) Trespassers and ecological receptors (whitefooted mouse, red fox, northern shorttailed shrew, and others) are identified. (CDMFPC, July 1994, Draft RI, pg 8-27, 8-32, 8-43)

Contaminants: Dieldrin 6.6e-05 mg/kg Mercury 0.00014 mg/kg Free cyanide 0.00038 mg/kg Selenium 0.00091 mg/kg Cadmium and compounds 0.0016 mg/kg Arsenic 0.0064 mg/kg Nickel (soluble salts) 0.0119 mg/kg Chromium 0.0208 mg/kg Ethyl benzene 0.021 mg/kg Toluene 0.022 mg/kg Polychlorinated Biphenyls 0.024 mg/kg Zinc 0.0825 mg/kg Naphthalene 0.1 mg/kg 2-Methylnapthalene 0.12 mg/kg Xylene (Mixed) 0.14 mg/kg Lead 0.167 mg/kg Aluminum 18.6 mg/kg Iron 18.6 mg/kg

Sediment (Human): High Risk

(Otis/SS039) Contaminants present in drainage ditch downgradient from the source. (CDMFPC, July 1994, Draft RI, Figure 6-4) Trespassers and ecological receptors (whitefooted mouse, red fox, northern shorttailed shrew, and others) are identified. (CDMFPC, July 1994, Draft RI, pg 8-27, 8-32, 8-43)

Contaminants: Dieldrin 6.6e-05 mg/kg Mercury 0.00014 mg/kg Free cyanide 0.00038 mg/kg Selenium 0.00091 mg/kg Cadmium and compounds 0.0016 mg/kg Arsenic 0.0064 mg/kg Nickel (soluble salts) 0.0119 mg/kg Chromium 0.0208 mg/kg Ethyl benzene 0.021 mg/kg Toluene 0.022 mg/kg Polychlorinated Biphenyls 0.024 mg/kg Zinc 0.0825 mg/kg Naphthalene 0.1 mg/kg 2-Methylnapthalene 0.12 mg/kg Xylene (Mixed) 0.14 mg/kg Lead 0.167 mg/kg Aluminum 18.6 mg/kg Iron 18.6 mg/kg

Soil: High Risk

v Trespassers and ecological receptors such as whitefooted mouse, red fox, northern shorttailed shrew, northern harrier, and northern cardinal, have access to the site. (CDMFPC, July 1994, Draft RI, pg 8-27, 8-32, 8-43)

Contaminants: Ethyl benzene 1.0e-06 mg/kg Toluene 8.0e-06 mg/kg Xylene (Mixed) 9.0e-06 mg/kg Acetone 4.2e-05 mg/kg Naphthalene 0.00015 mg/kg Polychlorinated Biphenyls 0.00033 mg/kg Dieldrin 0.00033 mg/kg Indeno(1,2,3-cd)Pyrene 0.00038 mg/kg Selenium 0.00045 mg/kg DDT 0.00075 mg/kg Free cyanide 0.00086 mg/kg Chrysene 0.00089 mg/kg Vanadium 0.0356 mg/kg Copper and compounds 0.0522 mg/kg Chromium 0.0773 mg/kg Zinc 0.239 mg/kg Lead 0.793 mg/kg Iron 10.9 mg/kg

Surface Water: High Risk

(Otis/SS039) Contaminants detected in downgradient surface water samples. (CDMFPC, July 1994, Draft RI, Figure 6-3) Trespassers have access to surface water areas, as well as various ecological receptors. (CDMFPC, July 1994, Draft RI, pg 8-27, 8-32, 8-86, 8-91)

Contaminants: Arsenic 2.2 ug/L Free cyanide 6.9 ug/L Cadmium and compounds 9.8 ug/L Chromium 9.9 ug/L Nickel (soluble salts) 12.4 ug/L Lead 51.2 ug/L Zinc 334.0 ug/L Iron 7550.0 ug/L

Surface Water (Fresh): High Risk

(Otis/SS039) Contaminants detected in downgradient surface water samples. (CDMFPC, July 1994, Draft RI, Figure 6-3) Trespassers have access to surface water areas, as well as various ecological receptors. (CDMFPC, July 1994, Draft RI, pg 8-27, 8-32, 8-86, 8-91)

Contaminants: Arsenic 2.2 ug/L Free cyanide 6.9 ug/L Cadmium and compounds 9.8 ug/L Chromium 9.9 ug/L Nickel (soluble salts) 12.4 ug/L Lead 51.2 ug/L Zinc 334.0 ug/L Iron 7550.0 ug/L

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Site ID: SS045

FS-15 RNWY #5 FUEL SPILL

Spill Site Area

Cost

Unknown

Final Cleanup Action

Mar 1989

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS046

FS-16 ARMY HELICOP MX B3456

Spill Site Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS047

FS-17 WWII MOTOR POOL/TRANS POINT

Spill Site Area

Cost

Unknown

Final Cleanup Action

Dec 1999

Contaminated Areas

Soil: Medium Risk

Ecological receptors and current workers may have access to this site. (CDMFPC, June 1994, Draft RI, pg 8-19, 9-2)

Contaminants: Methylene Chloride 1.0e-05 mg/kg Benzene 1.5e-05 mg/kg Acetone 9.9e-05 mg/kg Polychlorinated Biphenyls 0.0002 mg/kg DDT 0.00035 mg/kg Toluene 0.0018 mg/kg Pyrene 0.0022 mg/kg Ethyl benzene 0.0037 mg/kg Xylene (Mixed) 0.025 mg/kg Copper and compounds 0.0268 mg/kg Naphthalene 0.048 mg/kg Zinc 0.3 mg/kg Lead 0.769 mg/kg

Groundwater: Low Risk

(Otis/SS047) Low levels of contaminants have been detected in monitoring wells. (CDMFPC, June 1994, Draft RI, pg 6-3, 6-5). Contaminants not consistent with site uses. BST 24 Apr 97. Long Pond and the large cranberry bogs may be affected by contamination from this source, as well as future users of this aquifer. (CDMFPC, June 1994, Draft RI, pg 9-2)

Contaminants: Benzene 0.2 ug/L Tetrachloroethylene 0.5 ug/L Arsenic 2.6 ug/L Chloroform 3.0 ug/L Bis(2-Ethylhexyl)Phthalate 13.0 ug/L Vanadium 14.9 ug/L Barium 16.0 ug/L Lead 40.0 ug/L Copper and compounds 40.6 ug/L Manganese and compounds 311.0 ug/L Aluminum 6870.0 ug/L Iron 8010.0 ug/L

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Site ID: SS048

FS-18 FUEL TRANSFER POINT

Spill Site Area

Cost

Unknown

Final Cleanup Action

Jul 2001

This site is under ongoing monitoring until May 2014

Contaminated Areas

Sediment (Fresh): High Risk

(Otis/SS048) Contamination present at ground surface;can migrate offsite via wind; infiltrate into gw and contact with unvegetated areas. (ABB, 13 Ocy 93, iority 2 & 3 SI, Table 15). Cd (risk driver) not related to site uses. BST 24 Apr 97 On-site residents, small mammals, and birds are identified receptors. The area is unsecured. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 15-8, 1-19)

Contaminants: Benzo(a)Pyrene 0.00017 mg/kg Dieldrin 0.00022 mg/kg Fluoranthene 0.00042 mg/kg Toluene 0.024 mg/kg Chromium 0.0283 mg/kg Xylene (Mixed) 0.27 mg/kg Lead 0.287 mg/kg Cadmium and compounds 0.857 mg/kg Aluminum 3.18 mg/kg

Groundwater: Medium Risk

(Otis/SS048) The aquifer is unconfined. Contaminants have been detected in monitoring wells. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 1-17) Constituents identified as risk drivers not related to site uses. BST 24 Apr 97 This sole source aquifer is used for drinking water. Ecological receptors include small mammals and birds. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 15-8, 1-19)

Contaminants: Xylene (Mixed) 1.0 ug/L Chloroform 3.0 ug/L Chloromethane 3.0 ug/L Bis(2-Ethylhexyl)Phthalate 4.0 ug/L Lead 13.8 ug/L Barium 38.0 ug/L Free cyanide 106.0 ug/L

Sediment (Human): Medium Risk

(Otis/SS048) Contamination present at ground surface;can migrate offsite via wind; infiltrate into gw and contact with unvegetated areas. (ABB, 13 Ocy 93, iority 2 & 3 SI, Table 15). Cd (risk driver) not related to site uses. BST 24 Apr 97 On-site residents, small mammals, and birds are identified receptors. The area is unsecured. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 15-8, 1-19)

Contaminants: Benzo(a)Pyrene 0.00017 mg/kg Dieldrin 0.00022 mg/kg Fluoranthene 0.00042 mg/kg Toluene 0.024 mg/kg Chromium 0.0283 mg/kg Xylene (Mixed) 0.27 mg/kg Lead 0.287 mg/kg Cadmium and compounds 0.857 mg/kg Aluminum 3.18 mg/kg

Soil: Low Risk

v On-base workers, on-base residents, small mammals, and birds are identified receptors. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 15-8)

Contaminants: Aldrin 2.1e-05 mg/kg Dieldrin 0.00029 mg/kg HCH (gamma) Lindane 0.0046 mg/kg Arsenic 0.0061 mg/kg Nickel (soluble salts) 0.0105 mg/kg Toluene 0.024 mg/kg Chromium 0.024 mg/kg Naphthalene 0.026 mg/kg Barium 0.0319 mg/kg Ethyl benzene 0.055 mg/kg Lead 0.12 mg/kg Zinc 0.169 mg/kg Xylene (Mixed) 0.27 mg/kg

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Site ID: SS050

FS-20 CURRENT PRODUCT TANK 88

Spill Site Area

Cost

Unknown

Final Cleanup Action

Oct 1989

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS052

FS-22 ANG MOTOR POOL

Spill Site Area

Cost

Unknown

Final Cleanup Action

May 2000

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS054

FS-24 BOMARC

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 2000

Contaminated Areas

Groundwater: Low Risk

(Otis/SS054) Contamination detected in monitoring wells near the source. (CDMFPC, March 1995, Draft RI, pg ES-8, ES-11). Fuel spill excavated and removed. GW constituents identified not consistent with fuel spill. Separate source of solvents indicated. BS Identified plume is migrating towards Ashumet and Coonamessett Ponds. Wildlife populations and recreational users of these ponds are receptors who may be exposed to contaminants by incidental ingestion or dermal contact. (CDMFPC, March 1995, Draft RI, pg

Contaminants: Carbon tetrachloride 27.0 ug/L Tetrachloroethylene 500.0 ug/L Trichloroethylene (TCE) 3200.0 ug/L

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Site ID: SS058

CY-1 FORMER ARMY COAL STORAGE YD

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 2002

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS061

CY-4 CURRENT COAL STORAGE YARD

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 2001

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Soil: Medium Risk

Trespassers may have access to this site. Exposure could occur by dermal contact with, or inhalation/ingestion of, contaminated soils. (ECJ, July 1991, Draft RI, pg 7-8)

Contaminants: Pyrene 0.0013 mg/kg Fluoranthene 0.0016 mg/kg Beryllium and compounds 0.0109 mg/kg Chromium 0.0251 mg/kg Arsenic 0.0528 mg/kg Vanadium 0.0751 mg/kg Zinc 0.111 mg/kg Lead 0.14 mg/kg Copper and compounds 0.169 mg/kg Barium 0.483 mg/kg Iron 19.5 mg/kg

Groundwater: Low Risk

(Otis/SS061) Contamination is present in monitoring wells near source. May be the result of leaching wells near Building 160. (ECJ, July 1991, Draft RI, pg 5-15). Identified constituents not site related. BST 24 Apr 97 The unconfined aquifer beneath CY-4 is considered to be a sole source aquifer. Future residents may use it as a drinking water supply. (MMES/Radian, August 1995, Comprehensive Plan, pg 2-9, 2-17)

Contaminants: Trichloroethylene (TCE) 6.0 ug/L Lead 8.4 ug/L

Sediment (Fresh): Low Risk

(Otis/SS061) Contaminated sediment could migrate from storm drains, which ultimately discharge into Johns Pond. (ECJ, July 1991, Draft RI, pg 2-7) Low RR.BST 24 Apr 97 Johns Pond B, an area used for recreational purposes by human receptors and supports a variety of ecological receptors. (MMES/Radian, August 1995, Comprehensive Plan, pg 2-9, 2-17)

Contaminants: Fluorene 0.00045 mg/kg Acenaphthene 0.00049 mg/kg Naphthalene 0.0006 mg/kg Anthracene 0.0007 mg/kg 2-Methylnapthalene 0.001 mg/kg Benzo(a)Pyrene 0.0014 mg/kg Benzo(k)Fluoranthene 0.0016 mg/kg Benzo(a)Anthracene 0.0017 mg/kg Chrysene 0.002 mg/kg Pyrene 0.0034 mg/kg Phenanthrene 0.0035 mg/kg Fluoranthene 0.0042 mg/kg

Sediment (Human): Low Risk

(Otis/SS061) Contaminated sediment could migrate from storm drains, which ultimately discharge into Johns Pond. (ECJ, July 1991, Draft RI, pg 2-7) Low RR.BST 24 Apr 97 Johns Pond B, an area used for recreational purposes by human receptors and supports a variety of ecological receptors. (MMES/Radian, August 1995, Comprehensive Plan, pg 2-9, 2-17)

Contaminants: Fluorene 0.00045 mg/kg Acenaphthene 0.00049 mg/kg Naphthalene 0.0006 mg/kg Anthracene 0.0007 mg/kg 2-Methylnapthalene 0.001 mg/kg Benzo(a)Pyrene 0.0014 mg/kg Benzo(k)Fluoranthene 0.0016 mg/kg Benzo(a)Anthracene 0.0017 mg/kg Chrysene 0.002 mg/kg Pyrene 0.0034 mg/kg Phenanthrene 0.0035 mg/kg Fluoranthene 0.0042 mg/kg

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Site ID: SS065

CS-1CG TRANSMITTER SITE

Spill Site Area

Cost

Unknown

Final Cleanup Action

Jun 1995

This site is under ongoing monitoring until Sep 1995

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS066

CS-2CG HANGAR 3170 AREA, USCG

Spill Site Area

Cost

Unknown

Final Cleanup Action

Jun 1996

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: Medium Risk

(Otis/SS066) Contamination was detected in monitoring wells. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 7-7). Constituents identified not consistent with site uses. BST 24 Apr 97 The affected aquifer could be used as a water source by future residents. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 7-8, 7-9)

Contaminants: Beryllium and compounds 1.6 ug/L Lead 9.4 ug/L Nickel (soluble salts) 52.8 ug/L Barium 241.0 ug/L Aluminum 4740.0 ug/L

Soil: Low Risk

Future workers at this site and small mammals and birds may be affected by soil contamination. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 7-8, 7-12)

Contaminants: Fluorene 0.00013 mg/kg Benzo(a)Pyrene 0.00024 mg/kg Selenium 0.00033 mg/kg Beryllium and compounds 0.00089 mg/kg Benzo(b)Fluoranthene 0.0013 mg/kg Chrysene 0.0019 mg/kg Pyrene 0.0028 mg/kg Arsenic 0.003 mg/kg Barium 0.0105 mg/kg Chromium 0.0121 mg/kg Vanadium 0.0143 mg/kg Antimony and compounds 0.0221 mg/kg Zinc 0.0276 mg/kg Lead 0.05 mg/kg Aluminum 8.12 mg/kg Iron 9.84 mg/kg

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Site ID: SS067

CS-3CG BX SERVICE STATION

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1998

Contaminated Areas

Groundwater: Medium Risk

(Otis/SS067) Analytical results from monitoring wells near the source show low levels of contamination. (CDMFPC, August 1994, Draft RI, pg 6-11). Constituents identified not related to site uses. High iron indicates bioattenuation is probably occuring. BS Utility workers, trespassers, and nearby residents may be affected by groundwater contamination. Aquatic receptors may also be at risk. (CDMFPC, August 1994, Draft RI, pg E-4, 8-73)

Contaminants: Free cyanide 1.9 ug/L Arsenic 3.5 ug/L Lead 26.1 ug/L Naphthalene 110.0 ug/L Zinc 142.0 ug/L Barium 155.0 ug/L Iron 38700.0 ug/L

Soil: Low Risk

Results indicate surface soil may pose a threat to wildlife such as the white-footed mouse, upland sand piper, northern cardinal, meadow vole, and northern short-tailed shrew. Trespassers, workers, and residents may also be at risk. (CDMFPC, August 1994,

Contaminants: Cadmium and compounds 1.1e-06 mg/kg Arsenic 3.4e-06 mg/kg Chromium 1.0e-05 mg/kg Barium 1.28e-05 mg/kg Zinc 2.48e-05 mg/kg Lead 6.03e-05 mg/kg Iron 0.00873 mg/kg

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Site ID: SS068

CS-4CG HANGAR 128 AREA

Spill Site Area

Cost

Unknown

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until May 2014

Contaminated Areas

Groundwater: Medium Risk

(Otis/SS068) Contamination migrating to groundwater. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 1-19, 8-3, 8-5). Low RR. Constituents not consistent with fuels or solvents. BST 24 Apr 97 Residents in area downgradient are possible recipients of contaminated ground water. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 1-19, 8-6, 1-6)

Contaminants: Dieldrin 0.01 ug/L BHC 0.01 ug/L Trichloroethylene (TCE) 0.1 ug/L Methylene Chloride 0.82 ug/L Mercury (Methyl) 0.9 ug/L Chloroform 2.0 ug/L n-Butylbenzene 6.4 ug/L 1,3,5-Trimethylbenzene 9.5 ug/L Selenium 10.7 ug/L 1,2-Dichloroethane (EDC) 14.0 ug/L Cumene 14.0 ug/L Lead 17.2 ug/L 2-Methylnaphthalene 24.0 ug/L n-Propylbenzene 27.0 ug/L Arsenic 43.8 ug/L Beryllium and compounds 47.23 ug/L Cadmium and compounds 48.85 ug/L Toluene 49.0 ug/L Silver and compounds 51.31 ug/L Chloromethane 56.0 ug/L Boron 74.0 ug/L Xylene (Mixed) 97.0 ug/L Naphthalene 110.0 ug/L Nitrate 118.0 ug/L o-Xylene 130.0 ug/L Fluorine 140.0 ug/L Ammonia 206.0 ug/L Ethylene Dibromide 211.63 ug/L Chromium 222.0 ug/L Copper and compounds 236.57 ug/L Ethyl benzene 390.0 ug/L Antimony and compounds 466.17 ug/L Vanadium 486.61 ug/L Cobalt 488.9 ug/L Zinc 500.51 ug/L Nickel (soluble salts) 516.01 ug/L Barium 1763.76 ug/L Benzene 1800.0 ug/L Manganese and compounds 1830.0 ug/L Chlorine 11000.0 ug/L Aluminum 24200.0 ug/L Iron 53000.0 ug/L

Soil: Low Risk

High levels of contaminants in soils largely at or near the surfae that may potentially migrate are present at CS-4 USCG. (HAZWRAP, June 1999, Action Memo Priority 2 & 3 Study Areas and DDOU Source Removal, pg 19) The site is paved with small plot of grass. On-site workers, small mammals and birds, and future residents may be exposed to contaminated soils. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 8-6)

Contaminants: Chrysene 0.0006 mg/kg Beryllium and compounds 0.00065 mg/kg Fluoranthene 0.001 mg/kg Barium 0.0154 mg/kg Lead 0.0193 mg/kg Zinc 0.0288 mg/kg

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Site ID: SS070

CS-6CG USCG MAINTENANCE SHOPS

Spill Site Area

Cost

Unknown

Final Cleanup Action

Feb 1995

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Soil: Risk Not Evaluated

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS072

FS-1CG HANGAR 128 FUEL SPILL,USCG

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 2001

This site is under ongoing monitoring until May 2014

Contaminated Areas

Groundwater: Low Risk

(Otis/SS072) Contamination migrating with groundwater. (ABB-ES, October 13, 1993, Priority 2 & 3 SI, pg 1-19, 8-3 through 8-5). Constituents not consistent with fuels or solvents. High Manganese indicated bioattenuation may be occuring. BST 24 Apr 97 Downgradient surface water receives groundwater. Residents in area downgradient of the site are on Town water. (ABB-ES, October 13, 1993, Priority 2 & 3 SI, pg 1-6, 1-19, 8-6)

Contaminants: Lead 1.2 ug/L Iron 512.0 ug/L Manganese and compounds 744.0 ug/L

Soil: Low Risk

Site is paved with small plot of grass. (ABB, April 1995, Supplemental SIWP, pg 3-3) Future onsite workers, small mammals and birds, and future residents may be exposed. (ABB-ES, October 13, 1993, Priority 2 & 3 SI, pg 8-6)

Contaminants: Chrysene 0.0006 mg/kg Beryllium and compounds 0.00065 mg/kg Fluoranthene 0.001 mg/kg Barium 0.0159 mg/kg Lead 0.0193 mg/kg Zinc 0.0288 mg/kg Manganese and compounds 0.108 mg/kg

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Site ID: SS073

FS-2CG HOT MIX ASPHALT MAINT SHOP

Spill Site Area

Cost

Unknown

Final Cleanup Action

Mar 1997

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Soil: Medium Risk

Human exposure to surface soils is possible and may occur by dermal contact with, or inhalation of, contaminated soil. Ecological receptors, such as the shorttailed shrew, red, fox, and northern cardinal, may also be at risk. (ABB-ES, October 1993, Draft

Contaminants: Zinc 0.024 mg/kg Lead 0.074 mg/kg Methylene Chloride 0.075 mg/kg Aluminum 3.8 mg/kg Iron 5.24 mg/kg 2-Nitroaniline 7.0 mg/kg

Groundwater: Low Risk

(Otis/SS073) Groundwater contamination is found in monitoring wells downgradient from the site. (ABB-ES, October 1993, Draft SI, pg 23-5). RR very low. Metals not consistent with site uses. BST 24 Apr 97 Future residents are identified as potential users of the contaminated aquifer. (ABB-ES, October 1993, Draft SI, pg 23-7)

Contaminants: Nickel (soluble salts) 1.4 ug/L Lead 1.8 ug/L Barium 31.2 ug/L Zinc 104.0 ug/L

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Site ID: SS074

FS-25 BLDG. 167 AREA FUEL SPILL (EB/WA)

Spill Site Area

Cost

Unknown

Final Cleanup Action

Apr 2005

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: Low Risk

Contaminants: Ethylene Dibromide 0.01 ug/L

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Site ID: SS075

FS-26CG BLDG 3444, FUEL SPILL

Storage Area

Cost

Unknown

Final Cleanup Action

Sep 1994

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS076

FS-27 CONNERY AVE PHONE LINE SOIL EXCAVATION

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1994

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS059

CY-2 FORMER USAF/ANG COAL YARD

Spill Site Area

Cost

$19K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 1988

This site is under ongoing monitoring until Mar 2016

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS018

CS-6 CURRENT ANG MAINT SHOP

Spill Site Area

Cost

Unknown

Final Cleanup Action

May 2000

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: WP026

CS-14 BLDG 156, LEACH PIT (EB/WA)

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Apr 2005

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Sediment (Human): Medium Risk

(Otis/WP026) Contaminants may have drained to the leaching field. (ABB-ES, October 1992, Sump Removal Program WCR, pg 3-41) Site is primarily paved or covered with structures. (ABB-ES, October 1993, Draft SI, pg 11-8) Area may be accessible to human receptors. (ABB-ES, October 1992, sump Removal WCR, pg 3-42) Small mammals and birds may be possible receptors. (ABB-ES, October 1993, Draft SI, pg 11-8)

Contaminants: Copper and compounds 0.00098 mg/kg Zinc 0.00188 mg/kg Chromium 0.002 mg/kg 1,2-Dichloroethylene (trans) 0.0024 mg/kg Lead 0.0039 mg/kg o-Xylene 0.0039 mg/kg Ethyl benzene 0.0046 mg/kg Tetrachloroethylene 0.0048 mg/kg Xylene (Mixed) 0.019 mg/kg Toluene 0.023 mg/kg Vinyl Chloride 0.038 mg/kg Trichloroethylene (TCE) 0.04 mg/kg 1,2-Dichloroethylene (cis) 0.14 mg/kg

Surface Water: Medium Risk

(Otis/WP026) Contaminants may have drained to the leaching field. (ABB-ES, October 1992, Sump Removal Program WCR, pg 3-41) Site is primarily paved or covered with structures. (ABB-ES, October 1993, Draft SI, pg 11-8). Heptachlor epoxide not referenced in Area may be accessible to human receptors. (ABB-ES, October 1992, Sump Removal WCR, pg 3-41) Small mammals and birds may be possible receptors. (ABB-ES, October 1993, Draft SI, pg 11-8)

Contaminants: Tetrachloroethylene 250.0 ug/L Heptachlor Epoxide 310.0 ug/L 1,1-Dichloroethane 340.0 ug/L 1,2-Dichloroethylene (cis) 3900.0 ug/L

Surface Water (Fresh): Medium Risk

(Otis/WP026) Contaminants may have drained to the leaching field. (ABB-ES, October 1992, Sump Removal Program WCR, pg 3-41) Site is primarily paved or covered with structures. (ABB-ES, October 1993, Draft SI, pg 11-8). Heptachlor epoxide not referenced in Area may be accessible to human receptors. (ABB-ES, October 1992, Sump Removal WCR, pg 3-41) Small mammals and birds may be possible receptors. (ABB-ES, October 1993, Draft SI, pg 11-8)

Contaminants: Tetrachloroethylene 250.0 ug/L Heptachlor Epoxide 310.0 ug/L 1,1-Dichloroethane 340.0 ug/L 1,2-Dichloroethylene (cis) 3900.0 ug/L

Groundwater: Low Risk

(Otis/WP026) Low levels of contamination have reached groundwater. (ABB-ES, October 1993, Priority 2 & 3 SI, pg 11-4) Residents in area downgradient are on town water. (ABB-ES, October 1993, Priority 2 & 3 SI, pg 11-6; MMES/Radian, August 1994, Comprehensive Plan, pg 2-9, 2-15)

Contaminants: Trichloroethylene (TCE) 1.0 ug/L Tetrachloroethylene 5.0 ug/L Methylene Chloride 10.0 ug/L

Sediment (Fresh): Low Risk

(Otis/WP026) Contaminants may have drained to the leaching field. (ABB-ES, October 1992, Sump Removal Program WCR, pg 3-41) Site is primarily paved or covered with structures. (ABB-ES, October 1993, Draft SI, pg 11-8) Area may be accessible to human receptors. (ABB-ES, October 1992, sump Removal WCR, pg 3-42) Small mammals and birds may be possible receptors. (ABB-ES, October 1993, Draft SI, pg 11-8)

Contaminants: Copper and compounds 0.00098 mg/kg Zinc 0.00188 mg/kg Chromium 0.002 mg/kg 1,2-Dichloroethylene (trans) 0.0024 mg/kg Lead 0.0039 mg/kg o-Xylene 0.0039 mg/kg Ethyl benzene 0.0046 mg/kg Tetrachloroethylene 0.0048 mg/kg Xylene (Mixed) 0.019 mg/kg Toluene 0.023 mg/kg Vinyl Chloride 0.038 mg/kg Trichloroethylene (TCE) 0.04 mg/kg 1,2-Dichloroethylene (cis) 0.14 mg/kg

Soil: Low Risk

Workers may have access to the soil at this site. (ABB-ES, October 1993, Draft SI, pg 11-6)

Contaminants: Methylene Chloride 1.4e-05 mg/kg

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Site ID: WP078

DSRP SUMP STRUCTURES

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Dec 1996

Contaminated Areas

Groundwater: Medium Risk

(Otis/WP078) Contaminants migrating. (ABB, October 1992, SRPWCR, pg 2-11) Site ready for closeout except for removal of drains. BST 24 Apr 97 Limited due to downgradient receptors on municipal water supply. Groundwater is potentially usable for drinking water. (ABB, October 1992, SRPWCR, pg 2-4, 2-12; MMES/Radian, August 1994, Comprehensive Plan, pg 2-9, 2-15)

Contaminants: Trichloroethylene (TCE) 3.0 ug/L Benzene 20.0 ug/L Tetrachloroethylene 21.0 ug/L Xylene (Mixed) 280.0 ug/L Toluene 370.0 ug/L Ethyl benzene 1000.0 ug/L

Sediment (Fresh): Medium Risk

(Otis/WP078) Sediment may be washed from sumps and enter drainage system. (ABB, October 1992, SRPWCR, Section 3, pg 2-4, 2-12) Site ready for closeout except for removal of drains. BST 24 Apr 97 Trespassers, small birds, and mammals may contact drainage system. Many sump sites are contained within Priority 2 & 3 Study Areas. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 1-18)

Contaminants: Vinyl Chloride 0.038 mg/kg Benzene 0.048 mg/kg Chromium 0.13 mg/kg Naphthalene 0.13 mg/kg 1,2-Dichloroethylene (cis) 0.14 mg/kg Toluene 0.4 mg/kg Ethyl benzene 0.73 mg/kg o-Xylene 0.8 mg/kg Xylene (Mixed) 3.2 mg/kg Lead 9.3 mg/kg

Soil: Medium Risk

Potential receptors work/operate in some areas of sumps/drains and may become exposed by dermal contact with, or incidental ingestion of, contaminated soil. Many sump sites are contained within other study areas, such as Priority 2 & 3 Study Areas. (ABB,

Contaminants: Tetrachloroethylene 2.1e-05 mg/kg Trichloroethylene (TCE) 4.7e-05 mg/kg Benzo(a)Pyrene 0.0001 mg/kg Dieldrin 0.00032 mg/kg Polychlorinated Biphenyls 0.00034 mg/kg Lead 7.0 mg/kg

Surface Water: Medium Risk

(Otis/WP078) Contaminants have been detected outside of sumps. (ABB, October 1992, SRPWCR, Section 3). Site ready for closeout except forremoval of drains. BST 24 Apr 97 Trespassers, small birds, and mammals are receptors and may become exposed by ingestion of, or dermal contact with, contaminated surface water. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 1-18)

Contaminants: Benzene 70.0 ug/L 1,2-Dichloroethylene (cis) 3900.0 ug/L Vinyl Chloride 20000.0 ug/L

Sediment (Human): Low Risk

(Otis/WP078) Sediment may be washed from sumps and enter drainage system. (ABB, October 1992, SRPWCR, Section 3, pg 2-4, 2-12) Site ready for closeout except for removal of drains. BST 24 Apr 97 Base maintenance workers, trespassers, small birds, and mammals may become exposed by dermal contact with, or incidental ingestion of, contaminated sediments. Many sump sites are contained within Priority 2 & 3 Study Areas. (ABB, October 13, 1993, Priorit

Contaminants: Vinyl Chloride 0.038 mg/kg Benzene 0.048 mg/kg Chromium 0.13 mg/kg Naphthalene 0.13 mg/kg 1,2-Dichloroethylene (cis) 0.14 mg/kg Toluene 0.4 mg/kg Ethyl benzene 0.73 mg/kg o-Xylene 0.8 mg/kg Xylene (Mixed) 3.2 mg/kg Lead 9.3 mg/kg

Surface Water (Fresh): Low Risk

(Otis/WP078) Contaminants have been detected outside of sumps. (ABB, October 1992, SRPWCR, Section 3). Site ready for closeout except forremoval of drains. BST 24 Apr 97 Trespassers, small birds, and mammals are receptors and may become exposed by ingestion of, or dermal contact with, contaminated surface water. (ABB, October 13, 1993, Priority 2 & 3 SI, pg 1-18)

Contaminants: Benzene 70.0 ug/L 1,2-Dichloroethylene (cis) 3900.0 ug/L Vinyl Chloride 20000.0 ug/L

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Site ID: SS085

CS-8CG

Contaminated Sediments

Cost

Unknown

Final Cleanup Action

Dec 2002

Contaminated Areas

Groundwater: Low Risk

Groundwater can reach areas with residential wells Wells are converted to public water supply when identified to be near plumes

Contaminants: Trichloroethylene (TCE) 4.0 ug/L Manganese and compounds 11.0 ug/L

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Site ID: LF012

LF-7 RADON TUBE BURIAL LANDFILL

Landfill

Cost

$535K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Aug 1990

This site is under ongoing monitoring until Sep 2045

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS044

FS-14 FUEL SPILL, RANGE E-3 AREA (CAMP EDWARDS)

Spill Site Area

Cost

Unknown

Final Cleanup Action

Apr 1996

Contaminated Areas

Groundwater: Low Risk

(Otis/SS044) Migration of soil contamination could occur through percolation and infiltration of surface water. (ANEPTEK, August 1995, Supplemental SI, pg 6-15). Primary risk drivers not related to site spill. High Fe indicates bioattenuation is probablyo Public and private drinking water wells exist downgradient of the site. (ANEPTEK, August 1995, Supplemental SI, pg 6-13)

Contaminants: Chlordane 0.16 ug/L Chromium 10200.0 ug/L Iron 281000.0 ug/L

Soil: Low Risk

Army personnel, base workers, and utility workers have been identified as receptors. Exposure could occur by dermal contact with, or inahalation of, contaminated soil. (ANEPTEK, August 1995, Supplemental SI, pg 6-15)

Contaminants: Toluene 2.3e-05 mg/kg Phenol 4.4e-05 mg/kg Bis(2-Ethylhexyl)Phthalate 7.1e-05 mg/kg Selenium 0.00075 mg/kg Lead 0.00097 mg/kg Nickel (soluble salts) 0.0062 mg/kg Chromium 0.0138 mg/kg Vanadium 0.0212 mg/kg Aluminum 12.9 mg/kg

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Site ID: SS069

CS-5CG USCG CARPENTER SHOP B3456

Spill Site Area

Cost

Unknown

Final Cleanup Action

Dec 1986

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS033

FS-3 JOHNS POND RD FUEL DUMPING

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 1993

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS051

FS-21 CURRENT PRODUCT TANK 90

Spill Site Area

Cost

Unknown

Final Cleanup Action

Aug 1993

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS086

CS-22 DISPOSAL SITE SOUTH OF DOLAN ROAD

Contaminated Sediments

Cost

Unknown

Final Cleanup Action

Sep 2002

Contaminated Areas

Groundwater: Low Risk

Part of CS-10 Plume Plume being treated by other treatment plants.

Contaminants: Manganese and compounds 4.2 ug/L

Soil: Low Risk

Exposed surface soil Remote portion of base - no easy access.

Contaminants: Toluene 0.00011 mg/kg Chrysene 0.00063 mg/kg Xylene (Mixed) 0.00069 mg/kg Benzo(a)Pyrene 0.00069 mg/kg Bis(2-Ethylhexyl)Phthalate 0.0016 mg/kg

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Site ID: FT057

FTA-3 FORMER FPTA (1956-58)

Fire/Crash Training Area

Cost

Unknown

Final Cleanup Action

Aug 2001

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: High Risk

(Otis/FT057) Leaching of fuels and other hydrocarbons have most likely occurred through the highly permeable surface soils and possible ground water. (ABB Environmental, August 1993, RI, pg 7-6) Ground-water samples collected during the Mashpee Ground-Wat Ground-water flow in the southern portion of MMR flows south toward the towns of Mashpee and Falmouth, where it is also used as a water supply. USEPA has designated the aquifer as a sole-source aquifer. (ABB Environmental, August 1993, RI, pg 2-3)

Contaminants: Tetrachloroethylene 1.1 ug/L Mercury (Methyl) 4.1 ug/L Vanadium 4.3 ug/L Arsenic 4.8 ug/L Cobalt 15.5 ug/L Cadmium and compounds 15.7 ug/L Endrin 23.0 ug/L Endosulfan 31.0 ug/L Nickel (soluble salts) 40.8 ug/L Chromium 61.9 ug/L DDT 63.0 ug/L Barium 65.8 ug/L Di-n-Octyl Phthalate 82.0 ug/L Lead 192.0 ug/L Naphthalene 220.0 ug/L Copper and compounds 291.0 ug/L Bis(2-Ethylhexyl)Phthalate 670.0 ug/L Zinc 741.0 ug/L Manganese and compounds 1350.0 ug/L Xylene (Mixed) 2000.0 ug/L Aluminum 3450.0 ug/L Methyl Ethyl Ketone 6000.0 ug/L Iron 6070.0 ug/L

Sediment (Fresh): High Risk

(Otis/FT057) Storm-water drainage could transport contaminants. SD-3 is the primary drainage feature for the area and is the ultimate destination for FT057. (ABB Environmental, August 1993, RI, pg 6-6) The sediments are ultimately deposited into Johns Pond. Crane wildlife management area borders the base to the south. (ABB Environmental, August 1993, RI, pg 7-6, 8-4)

Contaminants: BHC 2.1e-07 mg/kg Heptachlor Epoxide 4.3e-07 mg/kg Chlordane 4.4e-07 mg/kg Endrin 5.1e-07 mg/kg Endosulfan 5.5e-07 mg/kg Chloroform 2.0e-06 mg/kg Methoxychlor 6.3e-06 mg/kg DDT 9.1e-06 mg/kg Anthracene 4.1e-05 mg/kg Dieldrin 4.5e-05 mg/kg Naphthalene 4.6e-05 mg/kg 2-Methylnaphthalene 8.3e-05 mg/kg Benzo(g,h,i)Perylene 0.00011 mg/kg Indeno(1,2,3-cd)Pyrene 0.00011 mg/kg Phenanthrene 0.00021 mg/kg Benz(a)Anthracene 0.00023 mg/kg Benzo(a)Pyrene 0.00025 mg/kg Beryllium and compounds 0.00025 mg/kg Fluoranthene 0.00031 mg/kg Chrysene 0.00031 mg/kg Benzo(b)Fluoranthene 0.00045 mg/kg Cyanide (free) 0.00078 mg/kg Cadmium and compounds 0.0028 mg/kg Pyrene 0.0034 mg/kg Arsenic 0.0055 mg/kg Nickel (soluble salts) 0.0088 mg/kg Chromium 0.0156 mg/kg Vanadium 0.0167 mg/kg Copper and compounds 0.0259 mg/kg Zinc 0.0742 mg/kg Manganese and compounds 0.0758 mg/kg Lead 0.144 mg/kg Barium 0.699 mg/kg Aluminum 4.12 mg/kg Iron 8.74 mg/kg

Sediment (Human): Medium Risk

(Otis/FT057) Storm-water drainage could transport contaminants. SD-3 is the primary drainage feature for the area and is the ultimate destination for FT057. (ABB Environmental, August 1993, RI, pg 6-6) The residents at the end of the drainage ditch. The sediments are ultimately deposited into Johns Pond. Crane Wildlife Management Area borders the base to the south. (ABB Environmental, August 1993, RI, pg 7-6, 8-4)

Contaminants: BHC 2.1e-07 mg/kg Heptachlor Epoxide 4.3e-07 mg/kg Chlordane 4.4e-07 mg/kg Endrin 5.1e-07 mg/kg Endosulfan 5.5e-07 mg/kg Chloroform 2.0e-06 mg/kg Methoxychlor 6.3e-06 mg/kg DDT 9.1e-06 mg/kg Anthracene 4.1e-05 mg/kg Dieldrin 4.5e-05 mg/kg Naphthalene 4.6e-05 mg/kg 2-Methylnaphthalene 8.3e-05 mg/kg Benzo(g,h,i)Perylene 0.00011 mg/kg Indeno(1,2,3-cd)Pyrene 0.00011 mg/kg Phenanthrene 0.00021 mg/kg Benz(a)Anthracene 0.00023 mg/kg Benzo(a)Pyrene 0.00025 mg/kg Beryllium and compounds 0.00025 mg/kg Fluoranthene 0.00031 mg/kg Chrysene 0.00031 mg/kg Benzo(b)Fluoranthene 0.00045 mg/kg Cyanide (free) 0.00078 mg/kg Cadmium and compounds 0.0028 mg/kg Pyrene 0.0034 mg/kg Arsenic 0.0055 mg/kg Nickel (soluble salts) 0.0088 mg/kg Chromium 0.0156 mg/kg Vanadium 0.0167 mg/kg Copper and compounds 0.0259 mg/kg Zinc 0.0742 mg/kg Manganese and compounds 0.0758 mg/kg Lead 0.144 mg/kg Barium 0.699 mg/kg Aluminum 4.12 mg/kg Iron 8.74 mg/kg

Surface Water: Medium Risk

(Otis/FT057) SD-3 is the primary drainage feature and ultimate destination of surface water from FT057. (ABB, August 1993, RI, pg 8-24) The ultimate destination of surface water is Johns Pond. Fishing, water skiing, and boating are popular. (ABB, August 1993, RI, pg 8-24)

Contaminants: Bromodichloromethane 2.7 ug/L Bromoform 3.2 ug/L Dibromochloromethane 3.8 ug/L Chloroform 4.9 ug/L Lead 5.5 ug/L 1,2-Dichlorobenzene 6.2 ug/L

Surface Water (Fresh): Medium Risk

(Otis/FT057) SD-3 is the primary drainage feature and ultimate destination of surface water from FT057. (ABB, August 1993, RI, pg 8-24) Ultimate destination of surface water is Johns Pond. Fishing, water skiing, and boating are popular. (ABB, August 1993, RI, pg 8-24)

Contaminants: Bromodichloromethane 2.7 ug/L Bromoform 3.2 ug/L Dibromochloromethane 3.8 ug/L Chloroform 4.9 ug/L Lead 5.5 ug/L 1,2-Dichlorobenzene 6.2 ug/L

Soil: Low Risk

Investigations at SD-3/FTA-3/CY-4 detected fuel and coal-related contamination in surface and subsurface soils, including VOCs (in subsurface soils only) and several SVOCs (primarily PAHs). Low concentations of pesticides and inorganics were also identifi Base workers, utility workers, and other persons entering the AOCs as trespassers could come into contact with soil. Adverse effects to plants and selected animals from exposure to metals in ditches and coal ash areas. (ABB Environmental, August 1993, RI,

Contaminants: Mercury (Methyl) 6.6e-07 mg/kg Beryllium and compounds 1.1e-06 mg/kg Arsenic 2.3e-06 mg/kg Selenium 7.8e-06 mg/kg Vanadium 1.58e-05 mg/kg Cadmium and compounds 2.02e-05 mg/kg Cobalt 2.23e-05 mg/kg Chromium 5.46e-05 mg/kg Manganese and compounds 9.25e-05 mg/kg Nickel (soluble salts) 0.000104 mg/kg Barium 0.000114 mg/kg Aldrin 0.00026 mg/kg Lead 0.000284 mg/kg Copper and compounds 0.000759 mg/kg Zinc 0.000903 mg/kg Aluminum 0.00772 mg/kg Iron 0.0137 mg/kg Bis(2-Ethylhexyl)Phthalate 0.027 mg/kg Naphthalene 0.042 mg/kg 4-Chloroaniline 0.058 mg/kg Xylene (Mixed) 0.11 mg/kg Toluene 0.22 mg/kg 1,1,1-Trichloroethane 0.56 mg/kg Trichloroethylene (TCE) 0.59 mg/kg Tetrachloroethylene 1.3 mg/kg

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Site ID: OT030

CS-18 PROPELLANT BURN AREA

Storage Area

Cost

Unknown

Final Cleanup Action

Sep 2009

Contaminated Areas

Soil: Low Risk

See Marty Aker Trespassers have access to soils at this site and may become exposed by dermal contact with, or inhalation of, contaminated soils. (USACHPPM, October 25, 1994, Draft SI, pg 66)

Contaminants: Benzo(b)Fluoranthene 0.00011 mg/kg Diethyl Phthalate 0.00011 mg/kg N-Nitrosodiphenylamine 0.00012 mg/kg Pentachlorophenol 0.00018 mg/kg 2,4-Dinitrophenol 0.0002 mg/kg Butyl Benzyl Phthalate 0.0002 mg/kg Benzoic Acid 0.00024 mg/kg 2,6-Dinitrotoluene 0.0007 mg/kg Bis(2-Ethylhexyl)Phthalate 0.0019 mg/kg 2,4-Dinitrotoluene 0.069 mg/kg

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Site ID: SS021

CS-9, FORMER MAIN USAF MOTOR POOL(21CS)

Spill Site Area

Cost

Unknown

Final Cleanup Action

May 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS053

FS-23 S. TRK ROAD FUEL SPILL

Spill Site Area

Cost

Unknown

Final Cleanup Action

May 1997

Contaminated Areas

Groundwater: Low Risk

(Otis/SS053) Low levels of contamination have been found in monitoring wells near the source. (Unknown Author, Title, Date, PRE, reviewed by Radian August 18, 1995, pg 5-4) Primary risk drivers not site related. BST 24 Apr 97 Both human and ecological receptors are identified for this site. (Unknown Author, Title, Date, PRE, reviewed by Radian August 18, 1995, pg 5-25)

Contaminants: Cadmium and compounds 4.3 ug/L Arsenic 9.7 ug/L Bis(2-Ethylhexyl)Phthalate 11.0 ug/L Manganese and compounds 364.0 ug/L Aluminum 609.0 ug/L Iron 11300.0 ug/L

Soil: Low Risk

The site is not currently restricted and can be accessed by both workers and trespassers who may be exposed by dermal contact with, or incidental ingestion of, contaminated soil. (Unknown Author, Title, Date, PRE, reviewed by Radian August 18, 1995, pg 5-

Contaminants: Chrysene 0.00031 mg/kg Fluoranthene 0.00053 mg/kg Arsenic 0.0025 mg/kg Zinc 0.028 mg/kg Chromium 0.031 mg/kg Iron 12.4 mg/kg

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Site ID: LF062

LF-1CG RUB/DEBRIS LDFL #1

Landfill

Cost

Unknown

Final Cleanup Action

Oct 1994

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS014

CS-2 EAST TRUCK RD MOTORPOOL

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 2000

Contaminated Areas

Soil: High Risk

Site workers, visitors, trespassers, and a variety of wildlife may be receptors who may be exposed by dermal contact or accidental ingestion/inhalation of contaminated soils. (CDMFPC, June 1993, FSP, pg 3-25)

Contaminants: Methylene Chloride 1.0e-06 mg/kg Benzene 8.0e-06 mg/kg Toluene 4.7e-05 mg/kg Barium 9.01e-05 mg/kg Naphthalene 0.00084 mg/kg Indeno(1,2,3-cd)Pyrene 0.0013 mg/kg Dieldrin 0.0017 mg/kg Ethyl benzene 0.0021 mg/kg Benzo(a)Pyrene 0.0025 mg/kg Chrysene 0.0028 mg/kg Polychlorinated Biphenyls 0.0047 mg/kg Benzo(b)Fluoranthene 0.0048 mg/kg Benzo(k)Fluoranthene 0.0048 mg/kg Xylene (Mixed) 0.0095 mg/kg Lead 0.245 mg/kg

Groundwater: Medium Risk

(Otis/SS014) Contamination found in monitoring wells. (CDMFPC, June 1995, DLWP, pg 4, Figure 4-7a). Closing with NFA. Drainage structure removed. Confirmatory samples clean. BST 24 Apr 97 Downgradient users may be threatened by groundwater contamination from this site. (CDMFPC, June 1993, FSP, pg 3-25)

Contaminants: Lead 13500.0 ug/L Zinc 45800.0 ug/L Barium 87700.0 ug/L Iron 22900000.0 ug/L

Sediment (Fresh): Medium Risk

(Otis/SS014) Possibility for contamination to escape sumps. (ABB-ES, October 1993. SRPWCR, pg 3-6)Closing with NFA. Drainage structure removed, confirmatory samples clean. BST 24 Apr 97 Site workers, visitors, trespassers, and a variety of wildlife may be receptors. (CDMFPC, June 1993, FSP, pg 3-25)

Contaminants: Endrin 0.00012 mg/kg Vinyl Chloride 0.0011 mg/kg Ethyl benzene 0.0012 mg/kg o-Xylene 0.0012 mg/kg Xylene (Mixed) 0.0013 mg/kg Copper and compounds 1.2 mg/kg Lead 110.0 mg/kg

Sediment (Human): Medium Risk

(Otis/SS014) Possibility for contamination to escape sumps. (ABB-ES, October 1993. SRPWCR, pg 3-6)Closing with NFA. Drainage structure removed, confirmatory samples clean. BST 24 Apr 97 Site workers, visitors, trespassers, and a variety of wildlife may be receptors. (CDMFPC, June 1993, FSP, pg 3-25)

Contaminants: Endrin 0.00012 mg/kg Vinyl Chloride 0.0011 mg/kg Ethyl benzene 0.0012 mg/kg o-Xylene 0.0012 mg/kg Xylene (Mixed) 0.0013 mg/kg Copper and compounds 1.2 mg/kg Lead 110.0 mg/kg

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Site ID: SS034

FS-4 EXIST PRODUCT TANKS100,101

Spill Site Area

Cost

Unknown

Final Cleanup Action

Nov 1999

This site is under ongoing monitoring until May 2014

Contaminated Areas

Groundwater: Low Risk

(Otis/SS034) Groundwater is unconfined and velocity is 1.4 feet/day. (ABB-ES, October 1993, Draft SI Priority 2 & 3, pg 3-6). Tank tightness tested okay, constitutents not consistent with product. BST 24 Apr 97 Offsite groundwater and surface water users receive groundwater which is used downgradient for human recreation and wildlife habitats. (ABB-ES, October 1993, Draft SI Priority 2 & 3, pg 13-6)

Contaminants: Cadmium and compounds 6.0 ug/L Bis(2-Ethylhexyl)Phthalate 8.0 ug/L Lead 8.0 ug/L Barium 19.6 ug/L

Soil: Low Risk

Located in a limited access security zone. Onsite workers, small mammals, and birds could be exposed. (ABB-ES, October 1993, Draft SI Priority 2 & 3, pg 13-9, 13-6)

Contaminants: 1-Butanol 1.4e-05 mg/kg Benzo(a)Pyrene 0.0017 mg/kg Chrysene 0.002 mg/kg Benzo(b)Fluoranthene 0.0021 mg/kg Pyrene 0.0024 mg/kg

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Site ID: SS049

FS-19 FORMER MOGAS FUEL STORAGE

Spill Site Area

Cost

Unknown

Final Cleanup Action

Dec 1999

Contaminated Areas

Groundwater: High Risk

(Otis/SS049) Low levels of contaminants were found in downgradient wells. (CDMFPC, May 1994, Draft RI, pg 6-4, 6-5) Residents and other users of groundwater as well as terrestrial vegetation and wildlife are potential receptors. (CDMFPC, May 1994, Draft RI, pg 8-29, 8-67)

Contaminants: Lead 18.5 ug/L Nickel (soluble salts) 22.1 ug/L Vanadium 24.4 ug/L Trichloroethylene (TCE) 32.0 ug/L Zinc 58.9 ug/L Barium 136.0 ug/L Aluminum 15100.0 ug/L Iron 19300.0 ug/L

Soil: Medium Risk

Current workers, trespassers, and future residents have been identified as receptors who may be exposed by dermal contact with, or inhalation of, contaminated soil. (CDMFPC, May 1994, Draft RI, pg 8-19)

Contaminants: Lead 0.000119 mg/kg Polychlorinated Biphenyls 0.00054 mg/kg DDT 0.00093 mg/kg Chromium 0.0115 mg/kg

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Site ID: SS060

CY-3 FORMER HOSPITAL COAL YD

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 2002

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Groundwater: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: SS071

CS-7CG DRY CLEANING FACILITY USCG

Storage Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: LF007

LF-2 ORIGINAL BASE LANDFILL

Landfill

Cost

$535K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2001

This site is under ongoing monitoring until Sep 2045

Contaminated Areas

Groundwater: High Risk

(Otis/LF007) Soil and groundwater contamination are present onsite. (ABB-ES, November 1993, RI, pg 5-25) There are private drinking water wells located downgradient of the source area. (ABB-ES, August 1994, SERGOU, RI, pg 6-5)

Contaminants: 4-Methylphenol (p-Cresol) 11.0 ug/L Toluene 19.0 ug/L Bis(2-Ethylhexyl)Phthalate 74.0 ug/L Naphthalene 5500.0 ug/L Xylene (Mixed) 13000.0 ug/L Cadmium and compounds 44000.0 ug/L Manganese and compounds 70000.0 ug/L Arsenic 177000.0 ug/L

Soil: Medium Risk

Base workers or utility workers could be exposed to contaminated soils through dermal contact or inhalation. (ABB-ES, November 1993, RI, pg 7-23)

Contaminants: Benzene 8.9e-05 mg/kg Dieldrin 9.1e-05 mg/kg Toluene 0.00017 mg/kg Chrysene 0.00029 mg/kg Benzo(b)Fluoranthene 0.00039 mg/kg Benzo(a)Pyrene 0.00042 mg/kg o-Xylene 0.00053 mg/kg p-Xylene 0.0018 mg/kg m-Xylene 0.0018 mg/kg Naphthalene 0.012 mg/kg Cadmium and compounds 0.023 mg/kg Arsenic 0.042 mg/kg Chromium 0.063 mg/kg

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Site ID: DP028

CS-16 SEWAGE TREATMENT PLANT DRYING BEDS

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Aug 2002

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: High Risk

(Otis/DP028) Contamination has been found in off-site monitoring wells. (ABB-ES, March 1995, RI, pg 5-31) The plume has already impacted a number of water wells in the Ashumet Valley (including a Falmouth public supply well). (ABB-ES, March 1995, RI Final Draft, pg 2-19 through 2-21)

Contaminants: Carbon Disulfide 0.2 ug/L Benzene 0.3 ug/L Cadmium and compounds 0.6 ug/L Bis(2-Ethylhexyl)Phthalate 1.0 ug/L Dibutyl Phthalate 1.0 ug/L Tetrachloroethylene 1.1 ug/L Chloroform 1.3 ug/L Beryllium and compounds 1.3 ug/L Arsenic 5.2 ug/L Antimony and compounds 6.9 ug/L Cobalt 11.8 ug/L Nickel (soluble salts) 29.2 ug/L Copper and compounds 29.2 ug/L Vanadium 35.2 ug/L Lead 41.2 ug/L Chromium 85.7 ug/L Barium 104.0 ug/L Zinc 114.0 ug/L Manganese and compounds 331.0 ug/L Aluminum 13100.0 ug/L Iron 29200.0 ug/L

Soil: High Risk

The preferred alternative for CS-16 and CS-17 is asphalt batching with confirmational sampling and clean material backfilling. (Proposed Plan to Clean up Source Areas at the Chemical Spill No. 16/Chemical Spill No. 17 Fact Sheet, August 1998, pg 11) Trespassers to the site could become contaminated. (ABB-ES, March 1995, RI, pg 7-25) No unacceptable risks to human receptors were identified at AOCs CS-16/CS-17. The exposures to COCs resulted in unacceptable risk to white-footed mouse, short-tailed shre

Contaminants: Mercury (Methyl) 2.0e-07 mg/kg Beryllium and compounds 3.6e-07 mg/kg Selenium 1.0e-06 mg/kg Chloroform 3.0e-06 mg/kg Silver and compounds 3.3e-06 mg/kg Benzene 4.0e-06 mg/kg Cobalt 6.0e-06 mg/kg Methyl Ethyl Ketone 8.0e-06 mg/kg Antimony and compounds 1.2e-05 mg/kg Cadmium and compounds 1.36e-05 mg/kg Anthracene 2.8e-05 mg/kg Carbazole 3.2e-05 mg/kg Dibenz[ah]anthracene 4.2e-05 mg/kg Acetone 5.8e-05 mg/kg Indeno(1,2,3-cd)Pyrene 0.00011 mg/kg DDE 0.00012 mg/kg Benzo(a)Pyrene 0.00014 mg/kg DDD 0.00015 mg/kg Chrysene 0.00017 mg/kg Benz(a)Anthracene 0.00022 mg/kg Dieldrin 0.00024 mg/kg Pyrene 0.0003 mg/kg Bis(2-Ethylhexyl)Phthalate 0.00043 mg/kg Benzo(b)Fluoranthene 0.00044 mg/kg Benzo(k)Fluoranthene 0.00044 mg/kg Fluoranthene 0.00048 mg/kg DDT 0.0012 mg/kg Arsenic 0.0022 mg/kg Copper and compounds 0.0025 mg/kg Lead 0.0038 mg/kg Nickel (soluble salts) 0.0048 mg/kg Barium 0.0051 mg/kg Vanadium 0.0055 mg/kg Zinc 0.0083 mg/kg Chromium 0.0086 mg/kg Aroclor 1254 0.024 mg/kg Toluene 0.025 mg/kg Ethyl benzene 0.027 mg/kg Manganese and compounds 0.0385 mg/kg Naphthalene 0.1 mg/kg 2-Methylnaphthalene 0.12 mg/kg Xylene (Mixed) 0.16 mg/kg Aluminum 1.21 mg/kg Iron 3.44 mg/kg

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Site ID: DP029

CS-17 SLUDGE DISPOSAL AREA

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Aug 2002

This site is under ongoing monitoring until Mar 2014

Contaminated Areas

Groundwater: High Risk

(Otis/DP029) Contamination has been found in off-site monitoring wells. (ABB-ES, March 1995, RI, pg 5-31) The plume has already impacted a number of water wells in the Ashumet Valley. (ABB-ES, March 1995, RI Final Draft, pg 2-19 through 2-21)

Contaminants: Carbon Disulfide 0.2 ug/L Benzene 0.3 ug/L Cadmium and compounds 0.6 ug/L Bis(2-Ethylhexyl)Phthalate 1.0 ug/L Dibutyl Phthalate 1.0 ug/L Tetrachloroethylene 1.1 ug/L Chloroform 1.3 ug/L Beryllium and compounds 1.3 ug/L Arsenic 5.2 ug/L Antimony and compounds 6.9 ug/L Cobalt 11.8 ug/L Nickel (soluble salts) 29.2 ug/L Copper and compounds 29.2 ug/L Vanadium 35.2 ug/L Lead 41.2 ug/L Chromium 85.7 ug/L Barium 104.0 ug/L Zinc 114.0 ug/L Manganese and compounds 331.0 ug/L Aluminum 13100.0 ug/L Iron 29200.0 ug/L

Soil: High Risk

The preferred alternative for CS-16 and CS-17 is asphalt batching with confirmational sampling and clean material backfilling. (Proposed Plan to Clean Up Source Areas at Chemical Spill No. 16/Chemical Spill No. 17 Fact Sheet, August 1998, pg 11) Trespassers to the site could become contaminated. (ABB-ES, March 1995, RI, pg 7-25) No unacceptable risks to human receptors were identified at AOCs CS-16/CS-17. The exposures to COCs at AOCs CS-16/CS-17 resulted in unacceptable risk to white-footed mous

Contaminants: Mercury (Methyl) 2.0e-07 mg/kg Beryllium and compounds 3.6e-07 mg/kg Selenium 1.0e-06 mg/kg Chloroform 3.0e-06 mg/kg Silver and compounds 3.3e-06 mg/kg Benzene 4.0e-06 mg/kg Cobalt 6.0e-06 mg/kg Methyl Ethyl Ketone 8.0e-06 mg/kg Antimony and compounds 1.2e-05 mg/kg Cadmium and compounds 1.36e-05 mg/kg Anthracene 2.8e-05 mg/kg Carbazole 3.2e-05 mg/kg Dibenz[ah]anthracene 4.2e-05 mg/kg Acetone 5.8e-05 mg/kg Indeno(1,2,3-cd)Pyrene 0.00011 mg/kg DDE 0.00012 mg/kg Benzo(a)Pyrene 0.00014 mg/kg DDD 0.00015 mg/kg Chrysene 0.00017 mg/kg Benz(a)Anthracene 0.00022 mg/kg Dieldrin 0.00024 mg/kg Pyrene 0.0003 mg/kg Bis(2-Ethylhexyl)Phthalate 0.00043 mg/kg Benzo(b)Fluoranthene 0.00044 mg/kg Benzo(k)Fluoranthene 0.00044 mg/kg Fluoranthene 0.00048 mg/kg DDT 0.0012 mg/kg Arsenic 0.0022 mg/kg Copper and compounds 0.0025 mg/kg Lead 0.0038 mg/kg Nickel (soluble salts) 0.0048 mg/kg Barium 0.0051 mg/kg Vanadium 0.0055 mg/kg Zinc 0.0083 mg/kg Chromium 0.0086 mg/kg Aroclor 1254 0.024 mg/kg Toluene 0.025 mg/kg Ethyl benzene 0.027 mg/kg Manganese and compounds 0.0385 mg/kg Naphthalene 0.1 mg/kg 2-Methylnaphthalene 0.12 mg/kg Xylene (Mixed) 0.16 mg/kg Aluminum 1.21 mg/kg Iron 3.44 mg/kg

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Site ID: LF008

LF-3 NE LANDFILL

Landfill

Cost

Unknown

Final Cleanup Action

Apr 1997

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: LF009

LF-4 JOHN'S PND DUMP-OFF BASE

Landfill

Cost

Unknown

Final Cleanup Action

Apr 2000

Contaminated Areas

Groundwater: Low Risk

Contaminants: Trichloroethylene (TCE) 0.0 ug/L

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Site ID: LF010

LF-5 VA CEMETARY RUBBLE LDFL

Landfill

Cost

Unknown

Final Cleanup Action

Jul 1991

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: LF011

LF-6 USN RUBBLE LANDFILL

Landfill

Cost

Unknown

Final Cleanup Action

Jul 1991

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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Site ID: LF063

LF-2CG RUB/DEBRIS LDFL #2

Landfill

Cost

Unknown

Final Cleanup Action

Aug 1990

Contaminated Areas

Groundwater: Risk Not Evaluated

Sediment (Ecological): Risk Not Evaluated

Sediment (Human): Risk Not Evaluated

Soil: Risk Not Evaluated

Surface Water: Risk Not Evaluated

Surface Water (Ecological): Risk Not Evaluated

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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 »