AUTHORITY: Implementing and authorized by Sections 19.1 through 19.9 of the Environmental Protection Act [415 ILCS 5].

SOURCE: Adopted at 13 Ill. Reg. 7351, effective May 1, 1989; amended at 16 Ill. Reg. 15073, effective September 21, 1992; recodified at 19 Ill. Reg. 11450, effective August 11, 1995; amended at 20 Ill. Reg. 788, effective January 1, 1996; amended at 30 Ill. Reg. 15590, effective September 18, 2006; emergency amendment at 33 Ill. Reg. 8546, effective June 2, 2009, for a maximum of 150 days; amended at 33 Ill. Reg. 15450, effective October 28, 2009; emergency amendment at 34 Ill. Reg. 8325, effective June 10, 2010, for a maximum of 150 days; emergency expired November 6, 2010; amended at 34 Ill. Reg. 17582, effective November 8, 2010; amended at 40 Ill. Reg. 6577, effective April 1, 2016; former Part repealed at 41 Ill. Reg. 7980 and new Part adopted at 41 Ill. Reg. 7983, effective July 1, 2017; amended at 42 Ill. Reg. 14442, effective July 20, 2018; amended at 43 Ill. Reg. 11141, effective October 1, 2019; amended at 48 Ill. Reg. 3751, effective February 27, 2024.