AUTHORITY: Implementing and authorized by Section 17.7 of the Environmental Protection Act [415 ILCS 5/17.7].
SOURCE: Adopted at 14 Ill. Reg. 2045, effective January 18, 1990; amended at 19 Ill. Reg. 12648, effective August 24, 1995; amended at 33 Ill. Reg. 7072, effective May 13, 2009; amended at 38 Ill. Reg. 13881, effective June 20, 2014; amended at 47 Ill. Reg. 418, effective December 29, 2022.