Superfund Information Systems: Site Profile

Superfund Site:

MAXEY FLATS NUCLEAR DISPOSAL
HILLSBORO, KY

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.

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 #
1,2-DICHLOROETHANE Buildings/Structures OU01 (01) ATSDR Profile 107-06-2
1,2-DICHLOROETHANE Groundwater OU01 (01) ATSDR Profile 107-06-2
1,2-DICHLOROETHANE Leachate OU01 (01) ATSDR Profile 107-06-2
1,2-DICHLOROETHANE Solid Waste OU01 (01) ATSDR Profile 107-06-2
AMERICIUM Buildings/Structures OU01 (01) ATSDR Profile 7440-35-9
AMERICIUM Groundwater OU01 (01) ATSDR Profile 7440-35-9
AMERICIUM Leachate OU01 (01) ATSDR Profile 7440-35-9
AMERICIUM Solid Waste OU01 (01) ATSDR Profile 7440-35-9
ARSENIC Buildings/Structures OU01 (01) ATSDR Profile 7440-38-2
ARSENIC Groundwater OU01 (01) ATSDR Profile 7440-38-2
ARSENIC Leachate OU01 (01) ATSDR Profile 7440-38-2
ARSENIC Solid Waste OU01 (01) ATSDR Profile 7440-38-2
BENZENE Buildings/Structures OU01 (01) ATSDR Profile 71-43-2
BENZENE Groundwater OU01 (01) ATSDR Profile 71-43-2
BENZENE Leachate OU01 (01) ATSDR Profile 71-43-2
BENZENE Solid Waste OU01 (01) ATSDR Profile 71-43-2
BIS(2-ETHYLHEXYL)PHTHALATE Buildings/Structures OU01 (01) ATSDR Profile 117-81-7
BIS(2-ETHYLHEXYL)PHTHALATE Groundwater OU01 (01) ATSDR Profile 117-81-7
BIS(2-ETHYLHEXYL)PHTHALATE Leachate OU01 (01) ATSDR Profile 117-81-7
BIS(2-ETHYLHEXYL)PHTHALATE Solid Waste OU01 (01) ATSDR Profile 117-81-7
CARBON-14 Buildings/Structures OU01 (01)   14762-75-5
CARBON-14 Groundwater OU01 (01)   14762-75-5
CARBON-14 Leachate OU01 (01)   14762-75-5
CARBON-14 Solid Waste OU01 (01)   14762-75-5
CESIUM-137 Groundwater OU01 (01)   10045-97-3
CESIUM-137 Leachate OU01 (01)   10045-97-3
CESIUM-137 Solid Waste OU01 (01)   10045-97-3
CHLOROBENZENE Buildings/Structures OU01 (01) ATSDR Profile 108-90-7
CHLOROBENZENE Groundwater OU01 (01) ATSDR Profile 108-90-7
CHLOROBENZENE Leachate OU01 (01) ATSDR Profile 108-90-7
CHLOROBENZENE Solid Waste OU01 (01) ATSDR Profile 108-90-7
CHLOROETHENE (VINYL CHLORIDE) Buildings/Structures OU01 (01) ATSDR Profile 75-01-4
CHLOROETHENE (VINYL CHLORIDE) Groundwater OU01 (01) ATSDR Profile 75-01-4
CHLOROETHENE (VINYL CHLORIDE) Leachate OU01 (01) ATSDR Profile 75-01-4
CHLOROETHENE (VINYL CHLORIDE) Solid Waste OU01 (01) ATSDR Profile 75-01-4
CHLOROFORM Buildings/Structures OU01 (01) ATSDR Profile 67-66-3
CHLOROFORM Groundwater OU01 (01) ATSDR Profile 67-66-3
CHLOROFORM Leachate OU01 (01) ATSDR Profile 67-66-3
CHLOROFORM Solid Waste OU01 (01) ATSDR Profile 67-66-3
COBALT Buildings/Structures OU01 (01) ATSDR Profile 7440-48-4
COBALT Groundwater OU01 (01) ATSDR Profile 7440-48-4
COBALT Leachate OU01 (01) ATSDR Profile 7440-48-4
COBALT Solid Waste OU01 (01) ATSDR Profile 7440-48-4
IODINE-129 Buildings/Structures OU01 (01)   15046-84-1
IODINE-129 Groundwater OU01 (01)   15046-84-1
IODINE-129 Leachate OU01 (01)   15046-84-1
IODINE-129 Solid Waste OU01 (01)   15046-84-1
LEAD Buildings/Structures OU01 (01) ATSDR Profile 7439-92-1
LEAD Groundwater OU01 (01) ATSDR Profile 7439-92-1
LEAD Leachate OU01 (01) ATSDR Profile 7439-92-1
LEAD Solid Waste OU01 (01) ATSDR Profile 7439-92-1
NICKEL Buildings/Structures OU01 (01) ATSDR Profile 7440-02-0
NICKEL Groundwater OU01 (01) ATSDR Profile 7440-02-0
NICKEL Leachate OU01 (01) ATSDR Profile 7440-02-0
NICKEL Solid Waste OU01 (01) ATSDR Profile 7440-02-0
PLUTONIUM Groundwater OU01 (01) ATSDR Profile 7440-07-5
PLUTONIUM-238 Buildings/Structures OU01 (01)   13981-16-3
PLUTONIUM-238 Leachate OU01 (01)   13981-16-3
PLUTONIUM-238 Solid Waste OU01 (01)   13981-16-3
PLUTONIUM-239 Buildings/Structures OU01 (01)   15117-48-3
PLUTONIUM-239 Groundwater OU01 (01)   15117-48-3
PLUTONIUM-239 Leachate OU01 (01)   15117-48-3
PLUTONIUM-239 Solid Waste OU01 (01)   15117-48-3
RADIUM-226 Buildings/Structures OU01 (01)   13982-63-3
RADIUM-226 Groundwater OU01 (01)   13982-63-3
RADIUM-226 Leachate OU01 (01)   13982-63-3
RADIUM-226 Solid Waste OU01 (01)   13982-63-3
STRONTIUM-90 Buildings/Structures OU01 (01)   10098-97-2
STRONTIUM-90 Groundwater OU01 (01)   10098-97-2
STRONTIUM-90 Leachate OU01 (01)   10098-97-2
STRONTIUM-90 Solid Waste OU01 (01)   10098-97-2
TECHNETIUM-99 Buildings/Structures OU01 (01)   7440-26-8
TECHNETIUM-99 Groundwater OU01 (01)   7440-26-8
TECHNETIUM-99 Leachate OU01 (01)   7440-26-8
TECHNETIUM-99 Solid Waste OU01 (01)   7440-26-8
THORIUM Buildings/Structures OU01 (01) ATSDR Profile 7440-29-1
THORIUM Groundwater OU01 (01) ATSDR Profile 7440-29-1
THORIUM Leachate OU01 (01) ATSDR Profile 7440-29-1
THORIUM Solid Waste OU01 (01) ATSDR Profile 7440-29-1
TOLUENE Buildings/Structures OU01 (01) ATSDR Profile 108-88-3
TOLUENE Groundwater OU01 (01) ATSDR Profile 108-88-3
TOLUENE Leachate OU01 (01) ATSDR Profile 108-88-3
TOLUENE Solid Waste OU01 (01) ATSDR Profile 108-88-3
TRICHLOROETHENE Buildings/Structures OU01 (01) ATSDR Profile 79-01-6
TRICHLOROETHENE Groundwater OU01 (01) ATSDR Profile 79-01-6
TRICHLOROETHENE Leachate OU01 (01) ATSDR Profile 79-01-6
TRICHLOROETHENE Solid Waste OU01 (01) ATSDR Profile 79-01-6
TRITIUM Buildings/Structures OU01 (01)   10028-17-8
TRITIUM Groundwater OU01 (01)   10028-17-8
TRITIUM Leachate OU01 (01)   10028-17-8
TRITIUM Solid Waste OU01 (01)   10028-17-8

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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