AUTHORITY: Authorized by Section 27 and implementing Sections 12 and 13 of the Illinois Environmental Protection Act [415 ILCS 5].
SOURCE: Adopted at 4 Ill. Reg. 34, p. 164, effective August 7, 1980; codified at 5 Ill. Reg. 34, p. 8527, effective August 10, 1981; amended in R18-24 at 43 Ill. Reg. 11597, effective September 25, 2019.