AUTHORITY: Implementing Sections 5, 14.4, 21, and 22, and authorized by Section 27 of the Environmental Protection Act [415 ILCS 5/5, 14.4, 21, 22, 27].
SOURCE: Adopted in R89-5 at 16 Ill. Reg. 1592, effective January 10, 1992; amended in R89-14(C) at 16 Ill. Reg. 14676, effective September 11, 1992; amended in R92-20 at 17 Ill. Reg. 1878, effective January 28, 1993; amended in R96-18 at 21 Ill. Reg. 6543, effective May 8, 1997; amended in R18-26 at 47 Ill. Reg. 7631, effective May 16, 2023.