Ill. Admin. Code tit. 35 § 310.302
Any POTW receiving wastes from an industrial user to which a categorical pretreatment standard applies may, at its discretion and subject to the conditions of Subpart C, grant removal credits to reflect removal by the POTW of pollutants specified in the categorical pretreatment standard. The POTW may grant a removal credit equal to, or at its discretion, less than its consistent removal rate. Upon being granted a removal credit, each affected industrial user must calculate its revised discharge limits in accordance with Section 310.310. Removal credits must be given for indicator or surrogate pollutants regulated in a categorical pretreatment standard only if the categorical pretreatment standard so specifies.
Ill. Admin. Code tit. 35, § 310.302
Amended at 28 Ill. Reg. 3390, effective February 6, 2004
BOARD NOTE: Derived from 40 CFR 403.7(a)(2) (2003).