From the National Library of Medicine:
The Toxics Release Inventory (TRI), a resource of the EPA, is a set of publicly available databases containing information on releases of specific toxic chemicals and their management as waste, as reported annually by U.S. industrial and federal facilities. This inventory was established under the Emergency Planning and Community Right to Know Act of 1986 (EPCRA). TRI’s data, beginning with the 1987 reporting year, covers air, water, land, and underground injection releases, as well as transfers to waste sites. In agreement with the Pollution Prevention Act of 1990, source reduction and recycling data is also included in TRI.
20,927 facilities reported to the EPA TRI program in 2011, with almost 80,000 submissions. A complete list of TRI chemicals required to be reported to the EPA can be found at http://www.epa.gov/tri/trichemicals/index.htm.
TOXMAP maps the TRI chemicals reported to the EPA as required by EPCRA. TOXMAP covers on-site TRI releases only and also includes EPA Superfund data.
The Toxicology and Environmental Health Information Program (TEHIP) in the Division of Specialized Information Services (SIS) of the NLM provides access to TRI as part of itsTOXNET® (TOXicology Data NETwork) databases, which cover toxicology, hazardous chemicals, environmental health and related areas.