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Toxics Release Inventory (TRI) Program

2014 Preliminary Dataset - TEQ Data Files

Dioxin and dioxin-like compounds data are reported on the TRI Reporting Form R Schedule 1. There are seventeen distinct members of this chemical category listed under TRI. Facilities that have any of the information required by Form R Schedule 1 must submit individual member data via the Form R Schedule 1 in addition to the Form R. Note: Quantities of dioxin and dioxin-like compounds are reported in grams. 

Although useful, total releases are not the best measure of the actual toxicity of these compounds because each compound has its own level of toxicity. To account for how compounds vary in toxicity, EPA calculates weighted values called toxic equivalents (TEQs) from the individual mass quantity data reported by facilities and the associated Toxic Equivalency Factors (TEFs). TEQs allow for a better understanding of the toxicity of releases and waste management activities at facilities that report to the TRI Program.

The Dioxin, Dioxin-like Compounds and TEQs Data Files are:

The data contained in these files are presented in comma delimited ASCII text. These files will be updated several times between July and September as more reporting year 2014 TRI submissions are processed. For more information about using these files, see the TRI TEQ Data File Documentation (PDF).