- Table 11 to Subpart AAAAA of Part 63—Toxicity Equivalence Factors (TEFs) for Human Health Risk Assessment of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Dioxin-Like Polychlorinated Biphenyls
| Dioxin/Furan | 2005 TEFs 1 | 2,3,7,8-TCDD | 1 | 1,2,3,7,8-PeCDD | 1 | 1,2,3,4,7,8-HxCDD | 0.1 | 1,2,3,6,7,8-HxCDD | 0.1 | 1,2,3,7,8,9-HxCDD | 0.1 | 1,2,3,4,6,7,8-HpCDD | 0.01 | OCDD | 0.0003 | 2,3,7,8-TCDF | 0.1 | 1,2,3,7,8-PeCDF | 0.03 | 2,3,4,7,8-PeCDF | 0.3 | 1,2,3,4,7,8-HxCDF | 0.1 | 1,2,3,6,7,8-HxCDF | 0.1 | 1,2,3,7,8,9-HxCDF | 0.1 | 2,3,4,6,7,8-HxCDF | 0.1 | 1,2,3,4,6,7,8-HpCDF | 0.01 | 1,2,3,4,7,8,9-HpCDF | 0.01 | OCDF | 0.0003 |
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1 EPA/100/R-10/005, “Recommended Toxicity Equivalence Factors (TEFs) for Human Health Risk Assessments of 2, 3, 7, 8-Tetrachlorodibenzo-p-dioxin and Dioxin-Like Compounds”, December 2010. (See § 63.14 for availability.)