AUTHORITY: Implementing Section 9.5 and authorized by Section 27 of the Environmental Protection Act [415 ILCS 5/9.5 and 27].
SOURCE: Adopted in R90-1 at 16 Ill. Reg. 16592, effective October 18, 1992; amended in R96-4 at 21 Ill. Reg. 6237, effective May 12, 1997.