AUTHORITY: Implementing and authorized by Section 9 of the Illinois Groundwater Protection Act [415 ILCS 55].
SOURCE: Adopted at 6 Ill. Reg. 2215, effective February 3, 1982; old rules repealed, new rules adopted and codified at 8 Ill. Reg. 3301, effective March 2, 1984; amended at 9 Ill. Reg. 9139, effective June 3, 1985; amended at 13 Ill. Reg. 12578, effective August 1, 1989; amended at 14 Ill. Reg. 14844, effective September 1, 1990; amended at 17 Ill. Reg. 4388, effective March 23, 1993; amended at 19 Ill. Reg. 7217, effective May 31, 1995; emergency amendment at 20 Ill. Reg. 3968, effective February 16, 1996, for a maximum of 150 days; amended at 20 Ill. Reg. 9997, effective July 22, 1996; amended at 23 Ill. Reg. 11707, effective September 1, 1999; amended at 44 Ill. Reg. 15785, effective September 1, 2020.