Toxic Release Inventory (TRI)
|Source||Environmental Protection Agency|
|File Size||921 MB|
|Dates Covered||2007 (this release); 1987-2006 (contact NICAR for archived data)|
The fields identify facilities, chemicals manufactured, processed, recycled and disposed of. The location fields give facility sites and which release activities are used in communities. Facilities and sites can be mapped using the fields MAPLONG and MAPLAT. The data shows what happens to the chemical when it leaves the facility, such as whether it is recycled, treated or released into the environment, and where the chemicals are sent. There is also information on one-time accidental releases.
Industries included are manufacturing, metal mining, coal mining, coal and oil burning electrical utilities, hazardous waste treatment and disposal facilities, chemical distributors, petroleum bulk plants terminals, and solvent recycling operations. There are now about 650 toxic chemicals and toxic chemical categories on the list of chemicals that were required to be reported.
Although you can download this data for free off the EPA’s Web site, NICAR data analysts have done a significant amount of cleaning to make this data easier to use immediately. Fields containing standard date formats, mappable latitude and longitude have been added, and the unique id field, TRIFID, has been altered to make it compatable with past years.
Record layouts and samples of this database
|Main documentation (readme07.txt)||16.9 KB|
|Sample Data (main100.xls)||340.5 KB|
|Schema (TRI.pdf)||725.4 KB|
|Record Layout (nicar_layout_06.xls)||119.5 KB|
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