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Table 5 to Subpart FFFFF of Part 63 - Table 5 to Subpart FFFFF of Part 63—Toxic Equivalency Factors

RegSenseCFR RegulationsEnvironmental Protection Agency (EPA)Hazardous Air PollutantsEnvironmentalAir QualityFocus AreaUSAEnglishAir ProgramsCFR Appendix

As stated in §63.7825(u), you must demonstrate compliance with each dioxin/furan emission limit that applies to you by calculating the sum of the 2,3,7,8-TCDD TEQs using the 2005 World Health Organization (WHO) toxicity equivalence factors (TEF) presented in the following table:

Table 5 to Subpart FFFFF of Part 63 - Table 5 to Subpart FFFFF of Part 63—Toxic Equivalency Factors
For each dioxin/furan congener . . .You must calculate its 2,3,7,8-TCDD TEQ using the following TEF . . .
2,3,7,8-tetrachlorodibenzo-p-dioxin1
1,2,3,7,8-pentachlorodibenzo-p-dioxin1
1,2,3,4,7,8-hexachlorodibenzo-p-dioxin0.1
1,2,3,7,8,9-hexachlorodibenzo-p-dioxin0.1
1,2,3,6,7,8-hexachlorodibenzo-p-dioxin0.1
1,2,3,4,6,7,8-heptachlorodibenzo-p-dioxin0.01
Octachlorodibenzo-p-dioxin0.0003
2,3,7,8-tetrachlorodibenzofuran0.1
1,2,3,7,8-pentachlorodibenzofuran0.03
2,3,4,7,8-pentachlorodibenzofuran0.3
1,2,3,4,7,8-hexachlorodibenzofuran0.1
1,2,3,6,7,8-hexachlorodibenzofuran0.1
1,2,3,7,8,9-hexachlorodibenzofuran0.1
2,3,4,6,7,8-hexachlorodibenzofuran0.1
1,2,3,4,6,7,8-heptachlorodibenzofuran0.01
1,2,3,4,7,8,9-heptachlorodibenzofuran0.01
Octachlorodibenzofuran0.0003

[89 FR 23335, April 3, 2024]

['Air Programs']
['Hazardous Air Pollutants']
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