AUTHORITY: Implementing Sections 7.2, 21, 21.1, 22, 22.17, and 22.40, and authorized by Section 27 of the Environmental Protection Act [415 ILCS 5/7.2, 21, 21.1, 22, 22.17, 22.40, and 27].
SOURCE: Adopted in R88-7 at 14 Ill. Reg. 15785, effective September 18, 1990; amended in R90-26 at 18 Ill. Reg. 12185, effective August 1, 1994; amended in R06-16/R06-17/R06-18 at 31 Ill. Reg. 1461, effective December 20, 2006; amended in R17-14/R17-15/R18-12/R18-31 at 42 Ill. Reg. 21430, effective November 19, 2018.