AUTHORITY: Implementing Section 39(a) of the Environmental Protection Act (Ill. Rev. Stat. 1983, ch. 111½, par. 1039(a)) and authorized by Section 4 of the Environmental Protection Act (Ill. Rev. Stat. 1983, ch. 111½, par. 1004).
SOURCE: Filed and effective December 29, 1977; codified at 8 Ill. Reg. 17882.