Ill. Admin. Code tit. 35, § 352.302
b) The values listed in this Table 1 shall be used to determine the 2,3,7,8-TCDD toxicity equivalence concentrations using the following equation:
| TECTCDD | = | ∑ | Cx TEFxBEFx |
where:
| TEC TCDD | = | 2,3,7,8-TCDD toxicity equivalence concentration in effluent |
| Cx | = | Concentration of total chemical x in effluent |
| TEFx | = | TCDD toxicity equivalency factor for x |
| BEFx | = | TCDD bioaccumulation equivalency factor for x |
| TABLE 1 | ||
| Congener | TEF | BEF |
| 2,3,7,8-TCDD | 1.0 | 1.0 |
| 1,2,3,7,8-PeCdd | 0.5 | 0.9 |
| 1,2,3,4,7,8-HxCDD | 0.1 | 0.3 |
| 1,2,3,6,7,8-HxCDD | 0.1 | 0.1 |
| 1,2,3,7,8,9-HxCDD | 0.1 | 0.1 |
| 1,2,3,4,6,7,8-HpCDD | 0.01 | 0.05 |
| OCDD | 0.001 | 0.01 |
| 2,3,7,8-TCDF | 0.1 | 0.8 |
| 1,2,3,7,8-PeCDF | 0.05 | 0.2 |
| 2,3,4,7,8-PeCDF | 0.5 | 1.6 |
| 1,2,3,4,7,8-HxCDF | 0.1 | 0.08 |
| 1,2,3,6,7,8-HxCDF | 0.1 | 0.2 |
| 2,3,4,6,7,8-HxCDF | 0.1 | 0.7 |
| 1,2,3,7,8,9-HxCDF | 0.1 | 0.6 |
| 1,2,3,4,6,7,8-HpCDF | 0.01 | 0.01 |
| 1,2,3,4,7,8,9-HpCDF | 0.01 | 0.4 |
| OCDF | 0.001 | 0.02 |