1. Regulations
  2. title 40
  3. chapter I-i12
  4. part 63
  5. subpart LLL
  6. appendix-i 1

- Table 2 to Subpart LLL of Part 63—1989 Toxic Equivalency Factors (TEFs)

Dioxins/Furans TEFs 1989 2,3,7,8-TCDD1 1,2,3,7,8-PeCDD0.5 1,2,3,4,7,8-HxCDD0.1 1,2,3,6,7,8-HxCDD0.1 1,2,3,7,8,9-HxCDD0.1 1,2,3,4,6,7,8-HpCDD0.01 OCDD 0.001 2,3,7,8-TCDF0.1 1,2,3,7,8-PeCDF0.05 2,3,4,7,8-PeCDF0.5 1,2,3,4,7,8-HxCDF0.1 1,2,3,6,7,8-HxCDF0.1 1,2,3,7,8,9-HxCDF0.1 2,3,4,6,7,8-HxCDF0.1 1,2,3,4,6,7,8-HpCDF0.01 1,2,3,4,7,8,9-HpCDF0.01 OCDF 0.001
[83 FR 35136, July 25, 2018]

AUTHORITY: 42 U.S.C. 7401

SOURCE: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.