40 C.F.R. § Table 38 to Subpart G of Part 63
Current through May 31, 2024
| 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 |
40 C.F.R. §Table 38 to Subpart G of Part 63