2010 Toxic Equivalency Factors (TEFs)

Table 3 to Subpart QQQ of Part 63—2010 Toxic Equivalency Factors (TEFs) Congener TEF (mammals) 2,3,7,8-Te CDD 1 1,2,3,7,8-Pe CDD 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-Te CDF 0.1 1,2,3,7,8-Pe CDF 0.03 2,3,4,7,8-Pe CDF 0.3 1,2,3,4,7,8-HxCDF 0.1 1,2,3,6,7,8-HxCDF 0.1 2,3,4,6,7,8-HxCDF 0.1 1,2,3,7,8,9-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