1. a) If a compliance date for an existing or new source categorical pretreatment standard is adopted or incorporated by reference in 35 Ill. Adm. Code 307, then industrial users must comply with the standard by the latest of the following times:

   1. 1) The date specified or incorporated by reference; or
   2. 2) The date the Board adopts or incorporates the standard by reference; or
   3. 3) The date USEPA approves the Illinois pretreatment program.

2. b) If no compliance date for a categorical pretreatment standard is adopted or incorporated by reference in 35 Ill. Adm. Code 307, then industrial users must comply with the standard by the latest of the following times:

   1. 1) The date the Board adopts or incorporates the standard by reference; or
   2. 2) The date USEPA approves the Illinois pretreatment program.

3. c) This Section must not be construed as extending compliance dates for enforcement of categorical pretreatment standards pursuant to statutes and regulations existing prior to authorization of the Illinois pretreatment program.

   BOARD NOTE: Derived from 40 CFR 403.6(b) (2005), as amended at 70 Fed. Reg. 60134 (Oct. 14, 2005).

(Source: Amended at 30 Ill. Reg. 17847, effective October 26, 2006)