SOURCE: Adopted at 5 Ill. Reg. 1686, effective February 16, 1981; amended at 5 Ill. Reg. 8300, effective August 5, 1981; codified at 5 Ill. Reg. 10911; amended at 7 Ill. Reg. 2167, effective February 4, 1983; amended at 7 Ill. Reg. 3197, effective March 14, 1983; amended at 8 Ill. Reg. 14992, effective August 6, 1984; amended at 14 Ill. Reg. 17636, effective October 16, 1990; amended at 17 Ill. Reg. 12423, effective July 15, 1993; amended at 17 Ill. Reg. 13612, effective July 30, 1993; amended at 18 Ill. Reg. 2064, effective January 21, 1994; amended at 18 Ill. Reg. 11607, effective July 7, 1994; amended at 19 Ill. Reg. 13887, effective October 1, 1995; amended at 20 Ill. Reg. 12473, effective September 1, 1996; amended at 21 Ill. Reg. 951, effective January 7, 1997; amended at 24 Ill. Reg. 7386, effective May 1, 2000; amended at 24 Ill. Reg. 12722, effective August 1, 2000; amended at 24 Ill. Reg. 17480, effective November 8, 2000; amended at 25 Ill. Reg. 6393, effective May 1, 2001; amended at 25 Ill. Reg. 8814, effective July 1, 2001; amended at 27 Ill. Reg. 533, effective January 1, 2003; amended at 31 Ill. Reg. 15094, effective November 1, 2007; amended at 32 Ill. Reg. 10161, effective July 1, 2008; amended at 33 Ill. Reg. 11318, effective July 21, 2009; amended at 36 Ill. Reg. 12371, effective July 23, 2012; amended at 39 Ill. Reg. 2648, effective February 9, 2015; amended at 42 Ill. Reg. 6447, effective March 26, 2018; amended at 45 Ill. Reg. 10719, effective August 3, 2021.
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