AUTHORITY: Implementing Sections 7.2, 13, and 22.4 and authorized by Section 27 of the Environmental Protection Act [415 ILCS 5/7.2, 13, 22.4 and 27].
SOURCE: Adopted in R81-32 at 6 Ill. Reg. 12479, effective May 17, 1982; amended in R82-19, at 7 Ill. Reg. 14352, effective May 17, 1982; amended in R84-9, at 9 Ill. Reg. 11894, effective July 24, 1985; amended in R89-2 at 14 Ill. Reg. 3082, effective February 20, 1990; amended in R94-5 at 18 Ill. Reg. 18265, effective December 20, 1994; amended in R95-6 at 19 Ill. Reg. 9906, effective June 27, 1995; amended in R03-7 at 27 Ill. Reg. 3675, effective February 14, 2003; amended in R06-16/R06-17/R06-18 at 31 Ill. Reg. 706, effective December 20, 2006; amended in R11-14 at 36 Ill. Reg. 1653, effective January 20, 2012; amended in R17-14/R17-15/R18-12/R18-31 at 42 Ill. Reg. 21179, effective November 19, 2018; amended in R21-13, R22-13, R24-4 at 48 Ill. Reg. 9712, effective June 20, 2024.