AUTHORITY: Implementing Section 56.2 and authorized by Section 27 of the Environmental Protection Act [415 ILCS 5/56.2 and 27].
SOURCE: Adopted in R91-20, at 17 Ill. Reg. 9911, effective June 21, 1993; amended in R18-29 at 43 Ill. Reg. 10072, effective August 30, 2019.