AUTHORITY: Implementing and authorized by the Environmental Barriers Act [410 ILCS 25].
SOURCE: Amended April 21, 1969; amended at 2 Ill. Reg. 52, p. 33, effective December 18, 1978; emergency amendment at 4 Ill. Reg. 9, p. 253, effective February 14, 1980, for a maximum of 150 days; amended at 4 Ill. Reg. 27, p. 208, effective June 24, 1980; emergency amendment at 4 Ill. Reg. 30, p. 1252, effective July 11, 1980, for a maximum of 150 days; amended at 5 Ill. Reg. 3797, effective March 31, 1981; codified at 8 Ill. Reg. 19922; former Part repealed at 12 Ill. Reg. 5243 and new Part adopted at 12 Ill. Reg. 5245, effective May 1, 1988; former Part repealed at 21 Ill. Reg. 5762 and new Part adopted at 21 Ill. Reg. 5764, effective April 24, 1997; emergency amendment at 21 Ill. Reg. 9781, effective July 10, 1997, for a maximum of 150 days; amended at 21 Ill. Reg. 14502, effective October 24, 1997; former Part repealed at 42 Ill. Reg. 19693 and new Part adopted at 42 Ill. Reg. 19696, effective October 23, 2018.