Sites Investigated for Contamination

EPA Final Superfund Sites Database (NPL)

The NPL is the list of national priorities among the known releases or threatened releases of hazardous substances, pollutants, or contaminants throughout the United States and its territories. The NPL is intended primarily to guide the EPA in determining which sites warrant further investigation. Superfund is the Federal government’s program to clean up the nation’s uncontrolled hazardous waste sites. Under the Superfund program, abandoned, accidentally spilled, or illegally dumped hazardous waste that pose a current or future threat to human health or the environment are cleaned up. To accomplish its mission, EPA works closely with communities, Potentially Responsible Parties (PRPs), scientists, researchers, contractors, and state, local, tribal, and Federal authorities. Together with these groups, EPA identifies hazardous waste sites, tests the conditions of the sites, formulates cleanup plans, and cleans up the sites.

EPA Proposed Superfund Sites Database (CERCLIS)

CERCLIS contains information on hazardous waste sites, potential hazardous waste sites, and remedial activities across the nation, including sites that are on the National Priorities List (NPL) or being considered for the NPL. Superfund is the Federal government’s program to clean up the nation’s uncontrolled hazardous waste sites. Under the Superfund program, abandoned, accidentally spilled, or illegally dumped hazardous waste that pose a current or future threat to human health or the environment are cleaned up. To accomplish its mission, EPA works closely with communities, Potentially Responsible Parties (PRPs), scientists, researchers, contractors, and state, local, tribal, and Federal authorities. Together with these groups, EPA identifies hazardous waste sites, tests the conditions of the sites, formulates cleanup plans, and cleans up the sites.

State Response Sites Database (ENVIROSTOR)

State response sites are sites where the California Department of Toxic Substance Control (DTSC) is actively working to remediate, either in a lead role or support capacity. These sites are also known as the State Superfund sites. These sites are considered to pose the greatest threat to the public and the environment. These confirmed sites are generally high priority, high potential risk,and include military facilities, state "funded" or Responsible Party (RP) lead, and National Priorities List (NPL) sites.

Confirmed Hazardous Substance Release Database (ENVIROSTOR)

The Department of Toxic Substances Control’s (DTSC’s) Site Mitigation and Brownfields Reuse Program’s (SMBRP’s) EnviroStor database identifies sites that have known contamination or sites for which there may be reasons to investigate further. EnviroStor provides similar information to the information that was available in CalSites, and provides additional site information, including, but not limited to, identification of formerly-contaminated properties that have been released for reuse, properties where environmental deed restrictions have been recorded to prevent inappropriate land uses, and risk characterization information that is used to assess potential impacts to public health and the environment at contaminated sites.

EPA Resource Conservation and Recovery Act Database (RCRAInfo)

RCRAInfo is EPAs comprehensive information system, providing access to data supporting the Resource Conservation and Recovery Act (RCRA) of 1976 and the Hazardous and Solid Waste Amendments (HSWA) of 1984. The database includes selective information on sites which generate, transport, store, treat and/or dispose of hazardous waste as defined by the Resource Conservation and Recovery Act (RCRA). Transporters are individuals or entities that move hazardous waste from the generator offsite to a facility that can recycle, treat, store, or dispose of the waste. TSDFs treat, store, or dispose of the waste.

Leaking Underground Tanks Database (LUST)

Leaking underground storage tanks are a significant source of petroleum impacts to groundwater and may pose the following potential threats to health and safety:

• Exposure from impacts to soil and/or groundwater;
• Contamination of drinking water aquifers;
• Contamination of public or private drinking water wells;
• Inhalation of vapors;

If a leak occurs, the owner or operator of the tank must report the leak to the local regulatory agency. Soil and/or groundwater assessment may be required by the lead regulatory agency.

Landfills and Waste Processing Sites

Landfills and/or Waste Transfer Stations Database (SWIS)

The Solid Waste Information System (SWIS) database contains information on solid waste facilities, operations, and disposal sites throughout the State of California. The types of facilities found in this database include landfills, transfer stations, material recovery facilities, composting sites, transformation facilities, waste tire sites, and closed disposal sites.

Clandestine Drug Lab Sites

Clandestine Drug Labs Sites from Federal Sources (US CDL)

Clandestine Drug Labs Sites from Federal Sources is a listing of drug lab location from the U.S. Department of Justice ("the Department"). It contains addresses of some locations where law enforcement agencies reported they found chemicals or other items that indicated the presence of either clandestine drug laboratories or dumpsites. In most cases, the source of the entries is not the Department, and the Department has not verified the entry and does not guarantee its accuracy. Members of the public must verify the accuracy of all entries by, for example, contacting local law enforcement and local health departments.

Clandestine Drug Lab Sites from State Sources (CDL)

Health and Safety code section 25354.5 requires DTSC removal and disposal of hazardous substances discovered by law enforcement officials while investigating clandestine drug laboratories. The illegal manufacture of psychoactive drugs, primarily methamphetamine, has escalated dramatically since 1980. California leads the nation in the number of illicit drug laboratory seizures. Contaminants at clandestine labs range from highly volatile organic solvents and semi-volatile organic compounds, to highly corrosive inorganic acids and bases, the illicit drug itself, and other by-products. The DTSC Clandestine Drug Lab Removal Program has funded and coordinated removal and disposal actions at more than 12,000 illegal drug labs and drug lab waste abandonments in the last five years.

Oil and Gas Drilling Sites

The Division of Oil, Gas, and Geothermal Resources was formed in 1915 to address the needs of the state, local governments, and industry by regulating statewide oil and gas activities with uniform laws and regulations. The Division supervises the drilling, operation, maintenance, and plugging and abandonment of onshore and offshore oil, gas, and geothermal wells, preventing damage to: (1) life, health, property, and natural resources; (2) underground and surface waters suitable for irrigation or domestic use; and (3) oil, gas, and geothermal reservoirs. Division requirements encourage wise development of California’s oil, gas, and geothermal resources while protecting the environment.