Superfund Information Systems: Site Profile

Superfund Site:

MATHER AIR FORCE BASE (AC&W DISPOSAL SITE)
MATHER, CA

Contaminant List

EPA has identified the chemical substances (i.e., hazardous substances, pollutants or contaminants) listed below as contaminants of concern (COCs) for the site. COCs are the chemical substances found at the site that EPA has determined pose an unacceptable risk to human health or the environment. These are the substances evaluated by EPA to be addressed by cleanup actions at the site.

To identify COCs, EPA:

  • Identifies people and ecological resources that could be exposed to contamination found at the site;
  • Determines the amount and type of contaminants present; and
  • Determines the human health or ecological effects that could result from contact with the contaminants.

The list of COCs provided below come from EPA’s remedy decisions for this site. This list may not reflect a modification to these decisions that removes a contaminant from the COC list. Also, after the decision, a COC may have been cleaned up. The COCs are displayed for the OU numbers indicated in the original decision document. OU numbers may change over time.

EPA is working to improve data quality. The information presented on this page is undergoing review for accuracy and completeness, and may be subject to change.

The following ATSDR Profile links exit the site Exit
Contaminant Name Contaminated
Media
Area of Site Found
(Operable Unit)
More Information CAS #
1,1-DICHLOROETHENE Groundwater GROUNDWATER (01) ATSDR Profile 75-35-4
1,2-DICHLOROETHANE Groundwater GROUNDWATER (01) ATSDR Profile 107-06-2
1,2-DICHLOROETHENE (CIS AND TRANS MIXTURE) Air FINAL BASEWIDE OU (04) ATSDR Profile 540-59-0
1,2-DICHLOROPROPANE Groundwater GROUNDWATER (01) ATSDR Profile 78-87-5
1,2-DIHYDROACENAPHTHYLENE Sediment GROUNDWATER (01)   83-32-9
1,4-DICHLOROBENZENE Groundwater GROUNDWATER (01) ATSDR Profile 106-46-7
2-BUTANONE (METHYL ETHYL KETONE) Soil GROUNDWATER (01) ATSDR Profile 78-93-3
9H-FLUORENE Sediment GROUNDWATER (01)   86-73-7
ACENAPHTHYLENE Sediment GROUNDWATER (01)   208-96-8
ALPHA-CHLORDANE Sediment GROUNDWATER (01)   5103-71-9
ALPHA-CHLORDANE Soil GROUNDWATER (01)   5103-71-9
ALUMINUM Surface Water GROUNDWATER (01) ATSDR Profile 7429-90-5
ANTHRACENE Sediment GROUNDWATER (01)   120-12-7
ANTIMONY Sediment FINAL BASEWIDE OU (04) ATSDR Profile 7440-36-0
ANTIMONY Soil GROUNDWATER (01) ATSDR Profile 7440-36-0
ANTIMONY Soil LANDFILL (02) ATSDR Profile 7440-36-0
ANTIMONY Surface Water FINAL BASEWIDE OU (04) ATSDR Profile 7440-36-0
AROCLOR 1248 Sediment GROUNDWATER (01) ATSDR Profile 12672-29-6
AROCLOR 1254 Sediment GROUNDWATER (01) ATSDR Profile 11097-69-1
AROCLOR 1260 Sediment GROUNDWATER (01) ATSDR Profile 11096-82-5
ARSENIC Sediment GROUNDWATER (01) ATSDR Profile 7440-38-2
ARSENIC Sediment FINAL BASEWIDE OU (04) ATSDR Profile 7440-38-2
ARSENIC Soil GROUNDWATER (01) ATSDR Profile 7440-38-2
ARSENIC Soil LANDFILL (02) ATSDR Profile 7440-38-2
ARSENIC Soil FINAL BASEWIDE OU (04) ATSDR Profile 7440-38-2
BARIUM Sediment GROUNDWATER (01) ATSDR Profile 7440-39-3
BARIUM Sediment FINAL BASEWIDE OU (04) ATSDR Profile 7440-39-3
BARIUM Soil GROUNDWATER (01) ATSDR Profile 7440-39-3
BARIUM Soil LANDFILL (02) ATSDR Profile 7440-39-3
BARIUM Surface Water GROUNDWATER (01) ATSDR Profile 7440-39-3
BARIUM Surface Water FINAL BASEWIDE OU (04) ATSDR Profile 7440-39-3
BENZENE Air LANDFILL (02) ATSDR Profile 71-43-2
BENZENE Groundwater GROUNDWATER (01) ATSDR Profile 71-43-2
BENZENE Soil GROUNDWATER (01) ATSDR Profile 71-43-2
BENZENE Soil LANDFILL (02) ATSDR Profile 71-43-2
BENZENE Soil FINAL BASEWIDE OU (04) ATSDR Profile 71-43-2
BENZO(B)FLUORANTHENE Sediment GROUNDWATER (01)   205-99-2
BENZO(B)FLUORANTHENE Sediment FINAL BASEWIDE OU (04)   205-99-2
BENZO(B)FLUORANTHENE Soil GROUNDWATER (01)   205-99-2
BENZO(B)FLUORANTHENE Soil FINAL BASEWIDE OU (04)   205-99-2
BENZO(GHI)PERYLENE Sediment GROUNDWATER (01)   191-24-2
BENZO(GHI)PERYLENE Sediment FINAL BASEWIDE OU (04)   191-24-2
BENZO(GHI)PERYLENE Soil GROUNDWATER (01)   191-24-2
BENZO(GHI)PERYLENE Soil FINAL BASEWIDE OU (04)   191-24-2
BENZO(K)FLUORANTHENE Sediment GROUNDWATER (01)   207-08-9
BENZO(K)FLUORANTHENE Sediment FINAL BASEWIDE OU (04)   207-08-9
BENZO(K)FLUORANTHENE Soil GROUNDWATER (01)   207-08-9
BENZO(K)FLUORANTHENE Soil FINAL BASEWIDE OU (04)   207-08-9
BENZO[A]ANTHRACENE Sediment FINAL BASEWIDE OU (04)   56-55-3
BENZO[A]ANTHRACENE Soil GROUNDWATER (01)   56-55-3
BENZO[A]ANTHRACENE Soil FINAL BASEWIDE OU (04)   56-55-3
BENZO[A]PYRENE Sediment GROUNDWATER (01)   50-32-8
BENZO[A]PYRENE Sediment FINAL BASEWIDE OU (04)   50-32-8
BENZO[A]PYRENE Soil FINAL BASEWIDE OU (04)   50-32-8
CADMIUM Sediment GROUNDWATER (01) ATSDR Profile 7440-43-9
CADMIUM Sediment FINAL BASEWIDE OU (04) ATSDR Profile 7440-43-9
CADMIUM Soil GROUNDWATER (01) ATSDR Profile 7440-43-9
CARBON TETRACHLORIDE Groundwater GROUNDWATER (01) ATSDR Profile 56-23-5
CARBON TETRACHLORIDE Soil FINAL BASEWIDE OU (04) ATSDR Profile 56-23-5
CHLOROETHENE (VINYL CHLORIDE) Air LANDFILL (02) ATSDR Profile 75-01-4
CHLOROETHENE (VINYL CHLORIDE) Groundwater GROUNDWATER (01) ATSDR Profile 75-01-4
CHLOROETHENE (VINYL CHLORIDE) Soil LANDFILL (02) ATSDR Profile 75-01-4
CHLOROMETHANE Groundwater GROUNDWATER (01) ATSDR Profile 74-87-3
CHLOROMETHANE Air LANDFILL (02) ATSDR Profile 74-87-3
CHLOROMETHANE Soil LANDFILL (02) ATSDR Profile 74-87-3
CHROMIUM Sediment GROUNDWATER (01) ATSDR Profile 7440-47-3
CHROMIUM Soil GROUNDWATER (01) ATSDR Profile 7440-47-3
CHROMIUM Surface Water GROUNDWATER (01) ATSDR Profile 7440-47-3
CHROMIUM(VI) Sediment GROUNDWATER (01)   18540-29-9
CHRYSENE Sediment GROUNDWATER (01)   218-01-9
CHRYSENE Sediment FINAL BASEWIDE OU (04)   218-01-9
CHRYSENE Soil GROUNDWATER (01)   218-01-9
CHRYSENE Soil FINAL BASEWIDE OU (04)   218-01-9
CIS-1,2-DICHLOROETHENE Groundwater GROUNDWATER (01) ATSDR Profile 156-59-2
CIS-1,2-DICHLOROETHENE Groundwater LANDFILL (02) ATSDR Profile 156-59-2
COBALT Sediment GROUNDWATER (01) ATSDR Profile 7440-48-4
COPPER Sediment GROUNDWATER (01) ATSDR Profile 7440-50-8
COPPER Sediment FINAL BASEWIDE OU (04) ATSDR Profile 7440-50-8
COPPER Soil FINAL BASEWIDE OU (04) ATSDR Profile 7440-50-8
DIBENZO(A,H)ANTHRACENE Sediment FINAL BASEWIDE OU (04)   53-70-3
DIBENZO(A,H)ANTHRACENE Soil FINAL BASEWIDE OU (04)   53-70-3
DICHLOROMETHANE (METHYLENE CHLORIDE) Air LANDFILL (02) ATSDR Profile 75-09-2
DICHLOROMETHANE (METHYLENE CHLORIDE) Soil LANDFILL (02) ATSDR Profile 75-09-2
DIELDRIN Sediment GROUNDWATER (01) ATSDR Profile 60-57-1
DIESEL FUEL Soil FINAL BASEWIDE OU (04)   68334-30-5
ETHYLBENZENE Soil GROUNDWATER (01) ATSDR Profile 100-41-4
ETHYLBENZENE Soil FINAL BASEWIDE OU (04) ATSDR Profile 100-41-4
FLUORANTHENE Sediment GROUNDWATER (01)   206-44-0
FLUORANTHENE Soil GROUNDWATER (01)   206-44-0
FLUORANTHENE Soil FINAL BASEWIDE OU (04)   206-44-0
GAMMA-CHLORDANE Sediment GROUNDWATER (01)   5566-34-7
GAMMA-CHLORDANE Soil GROUNDWATER (01)   5566-34-7
GASOLINE Groundwater GROUNDWATER (01) ATSDR Profile 8006-61-9
GASOLINE Sediment GROUNDWATER (01) ATSDR Profile 8006-61-9
GASOLINE Soil GROUNDWATER (01) ATSDR Profile 8006-61-9
GASOLINE Soil FINAL BASEWIDE OU (04) ATSDR Profile 8006-61-9
INDENO(1,2,3-CD)PYRENE Sediment GROUNDWATER (01)   193-39-5
INDENO(1,2,3-CD)PYRENE Sediment FINAL BASEWIDE OU (04)   193-39-5
INDENO(1,2,3-CD)PYRENE Soil GROUNDWATER (01)   193-39-5
INDENO(1,2,3-CD)PYRENE Soil FINAL BASEWIDE OU (04)   193-39-5
LEAD Groundwater GROUNDWATER (01) ATSDR Profile 7439-92-1
LEAD Sediment GROUNDWATER (01) ATSDR Profile 7439-92-1
LEAD Sediment LANDFILL (02) ATSDR Profile 7439-92-1
LEAD Sediment FINAL BASEWIDE OU (04) ATSDR Profile 7439-92-1
LEAD Soil GROUNDWATER (01) ATSDR Profile 7439-92-1
LEAD Soil LANDFILL (02) ATSDR Profile 7439-92-1
LEAD Soil FINAL BASEWIDE OU (04) ATSDR Profile 7439-92-1
LEAD Soil OPERABLE UNIT 6 (06) ATSDR Profile 7439-92-1
LEAD Surface Water GROUNDWATER (01) ATSDR Profile 7439-92-1
LEAD Surface Water FINAL BASEWIDE OU (04) ATSDR Profile 7439-92-1
MANGANESE Groundwater LANDFILL (02) ATSDR Profile 7439-96-5
MANGANESE Soil LANDFILL (02) ATSDR Profile 7439-96-5
MANGANESE Surface Water GROUNDWATER (01) ATSDR Profile 7439-96-5
MANGANESE Surface Water LANDFILL (02) ATSDR Profile 7439-96-5
MERCURY Sediment GROUNDWATER (01) ATSDR Profile 7439-97-6
MERCURY Soil GROUNDWATER (01) ATSDR Profile 7439-97-6
MINERAL OILS Soil FINAL BASEWIDE OU (04)   8012-95-1
NAPHTHALENE Sediment GROUNDWATER (01) ATSDR Profile 91-20-3
NAPHTHALENE Soil GROUNDWATER (01) ATSDR Profile 91-20-3
NICKEL Groundwater LANDFILL (02) ATSDR Profile 7440-02-0
NICKEL Sediment GROUNDWATER (01) ATSDR Profile 7440-02-0
P,P'-DDD Sediment GROUNDWATER (01) ATSDR Profile 72-54-8
P,P'-DDD Soil GROUNDWATER (01) ATSDR Profile 72-54-8
P,P'-DDE Sediment GROUNDWATER (01) ATSDR Profile 72-55-9
P,P'-DDE Soil GROUNDWATER (01) ATSDR Profile 72-55-9
P,P'-DDT Sediment GROUNDWATER (01) ATSDR Profile 50-29-3
P,P'-DDT Soil GROUNDWATER (01) ATSDR Profile 50-29-3
PETROLEUM Sediment GROUNDWATER (01) ATSDR Profile 8002-05-9
PETROLEUM Soil GROUNDWATER (01) ATSDR Profile 8002-05-9
PHENANTHRENE Sediment GROUNDWATER (01)   85-01-8
PHENANTHRENE Soil FINAL BASEWIDE OU (04)   85-01-8
PYRENE Sediment GROUNDWATER (01)   129-00-0
PYRENE Sediment FINAL BASEWIDE OU (04)   129-00-0
PYRENE Soil GROUNDWATER (01)   129-00-0
PYRENE Soil FINAL BASEWIDE OU (04)   129-00-0
SILVER Soil GROUNDWATER (01) ATSDR Profile 7440-22-4
SILVER Surface Water GROUNDWATER (01) ATSDR Profile 7440-22-4
TETRACHLOROETHENE Air FINAL BASEWIDE OU (04) ATSDR Profile 127-18-4
TETRACHLOROETHENE Air LANDFILL (02) ATSDR Profile 127-18-4
TETRACHLOROETHENE Groundwater GROUNDWATER (01) ATSDR Profile 127-18-4
TETRACHLOROETHENE Groundwater LANDFILL (02) ATSDR Profile 127-18-4
TETRACHLOROETHENE Soil LANDFILL (02) ATSDR Profile 127-18-4
TIN Soil FINAL BASEWIDE OU (04) ATSDR Profile 7440-31-5
TOLUENE Soil GROUNDWATER (01) ATSDR Profile 108-88-3
TOLUENE Soil FINAL BASEWIDE OU (04) ATSDR Profile 108-88-3
TOTAL PETROLEUM HYDROCARBONS (TPH) Soil GROUNDWATER (01)   E966473
TRICHLOROETHENE Air FINAL BASEWIDE OU (04) ATSDR Profile 79-01-6
TRICHLOROETHENE Groundwater GROUNDWATER (01) ATSDR Profile 79-01-6
TRICHLOROETHENE Groundwater AC&W (03) ATSDR Profile 79-01-6
TRICHLOROETHENE Soil GROUNDWATER (01) ATSDR Profile 79-01-6
VANADIUM Sediment GROUNDWATER (01) ATSDR Profile 7440-62-2
VANADIUM Surface Water GROUNDWATER (01) ATSDR Profile 7440-62-2
XYLENE (MIXED ISOMERS) Soil GROUNDWATER (01) ATSDR Profile 1330-20-7
XYLENE (MIXED ISOMERS) Air FINAL BASEWIDE OU (04) ATSDR Profile 1330-20-7
XYLENE (MIXED ISOMERS) Groundwater GROUNDWATER (01) ATSDR Profile 1330-20-7
XYLENE (MIXED ISOMERS) Soil GROUNDWATER (01) ATSDR Profile 1330-20-7
XYLENE (MIXED ISOMERS) Soil FINAL BASEWIDE OU (04) ATSDR Profile 1330-20-7
ZINC Sediment GROUNDWATER (01) ATSDR Profile 7440-66-6
ZINC Sediment FINAL BASEWIDE OU (04) ATSDR Profile 7440-66-6
ZINC Soil GROUNDWATER (01) ATSDR Profile 7440-66-6
ZINC Surface Water GROUNDWATER (01) ATSDR Profile 7440-66-6

About CAS #

Chemical Abstracts Service (CAS) is a division of the American Chemical Society. CAS builds and maintains the largest and most current database of chemical substance information in the world. These chemical substances are labeled with CAS Registry Numbers® (CASRNs or CAS Numbers) and are used internationally as unique numeric identifiers for a single substance. They have no chemical significance and, because they are widely used, are a link to a wealth of information about a specific chemical substance. They are provided here for reference purposes to hopefully aide you in researching the respective chemical. For more information, visit the CAS Web site. Exit

About ATSDR

The Agency for Toxic Substances and Disease Registry (ATSDR) is an agency of the U.S. Department of Health and Human Services. ATSDR is charged under the Superfund law (CERCLA) to assess the presence and nature of health hazards at specific Superfund sites, to help prevent or reduce further exposure and the illnesses that result from such exposures, and to expand the knowledge base about health effects from exposure to hazardous substances. ATSDR maintains a series of fact sheets and profiles about contaminants of concern commonly found at Superfund sites. Links to these resources are provided above when available. For more information, visit the ATSDR Web site. Exit

About EPA’s IRIS

The Integrated Risk Information System (IRIS), prepared and maintained by the U.S. Environmental Protection Agency (U.S. EPA), is an electronic database containing information on human health effects that may result from exposure to various chemicals in the environment. IRIS was initially developed for EPA staff in response to a growing demand for consistent information on chemical substances for use in risk assessments, decision-making and regulatory activities. The information in IRIS is intended for those without extensive training in toxicology, but with some knowledge of health sciences. For more information, visit the EPA IRIS Web site.

About EPA’s SRS

The Substance Registry System (SRS) is the Environmental Protection Agency's (EPA) central system for information about regulated and monitored substances. The system provides a common basis for identification of chemicals, biological organisms, and other substances listed in EPA regulations and data systems, as well as substances of interest from other sources, such as publications. The system does not provide health hazard information at this time. For more information, visit the EPA SRS Web site.

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