AUTHORITY: Implementing and authorized by Sections 4(k), 4(x)(1), and 4(x)(2) of the Illinois Environmental Protection Act [415 ILCS 5/4(k), 415 ILCS 5/4(x)(1), and 415 ILCS 5/4(x)(2)].
SOURCE: Emergency rules adopted at 11 Ill. Reg. 19709, effective November 20, 1987, for a maximum of 150 days; adopted at 12 Ill. Reg. 8926, effective May 17, 1988; amended at 14 Ill. Reg. 2055, effective January 18, 1990; amended at 41 Ill. Reg. 13243, effective October 20, 2017.