['Air Programs']

['Hazardous Air Pollutants']

10/08/2024

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Air Programs - Hazardous Air Pollutants

Table 3 to Subpart QQQ of Part 63—2010 Toxic Equivalency Factors (TEFs)

RegSense CFR Regulations Environmental Protection Agency (EPA)Hazardous Air Pollutants Air Programs Environmental Air Quality CFR Appendix English Focus Area USA

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

[89 FR 41692, May 13, 2024]

['Air Programs']

['Hazardous Air Pollutants']

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