Toxic Equivalent (TEQ) definition
Toxic Equivalent (TEQ) means: a rating of toxicity from the 1989 international toxic equivalency factors that relates the toxicity of a chemical to the toxicity of 2,3,7,8-tetrachlorinated dibenzo-p-dioxin. The ratings of TEQ are those found in Table 2 of 40 CFR 60 Subpart Ec. {added by Nov. 19, 1998 amendment, effective Sept. 1, 1999}