AUTHORITY: Implementing Section 5-15 of the Illinois Administrative Procedure Act [5 ILCS 100/5-15] and authorized by Section 4 of the Environmental Protection Act [415 ILCS 5/4].
SOURCE: Adopted at 8 Ill. Reg. 23202, effective November 30, 1984; amended at 34 Ill. Reg. 9019, effective June 22, 2010.