Table 38 to Subpart G of Part 63—Toxic Equivalency Factors

Dioxin and furan congener	Toxic equivalency factor	1,2,3,7,8-pentachlorodibenzo-p-dioxin	1	1,2,3,4,7,8-hexachlorodibenzo-p-dioxin	0.1	1,2,3,7,8,9-hexachlorodibenzo-p-dioxin	0.1	1,2,3,6,7,8-hexachlorodibenzo-p-dioxin	0.1	1,2,3,4,6,7,8-heptachlorodibenzo-p-dioxin	0.01	octachlorodibenzo-p-dioxin	0.0003	2,3,7,8-tetrachlorodibenzofuran	0.1	2,3,4,7,8-pentachlorodibenzofuran	0.3	1,2,3,7,8-pentachlorodibenzofuran	0.03	1,2,3,4,7,8-hexachlorodibenzofuran	0.1	1,2,3,6,7,8-hexachlorodibenzofuran	0.1	1,2,3,7,8,9-hexachlorodibenzofuran	0.1	2,3,4,6,7,8-hexachlorodibenzofuran	0.1	1,2,3,4,6,7,8-heptachlorodibenzofuran	0.01	1,2,3,4,7,8,9-heptachlorodibenzofuran	0.01	Octachlorodibenzofuran	0.0003

[89 FR 43220, May 16, 2024]