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SOURCE: Adopted in R81-22 at 5 Ill. Reg. 9781, effective May 17, 1982; amended and codified in R81-22 at 6 Ill. Reg. 4828, effective May 17, 1982; amended in R84-9 at 9 Ill. Reg. 11961, effective July 24, 1985; amended in R86-19 at 10 Ill. Reg. 20718, effective December 2, 1986; amended in R86-46 at 11 Ill. Reg. 13570, effective August 4, 1987; amended in R87-5 at 11 Ill. Reg. 19412, effective November 12, 1987; amended in R95-6 at 19 Ill. Reg. 9945, effective June 27, 1995; amended in R96-10/R97-3/R97-5 at 22 Ill. Reg. 589, effective December 16, 1997; amended in R97-21/R98-3/R98-5 at 22 Ill. Reg. 17965, effective September 28, 1998; amended in R06-5/R06-6/R06-7 at 30 Ill. Reg. 3180, effective February 23, 2006; amended in R06-16/R06-17/R06-18 at 31 Ill. Reg. 881, effective December 20, 2006; amended in R07-5/R07-14 at 32 Ill. Reg. 11969, effective July 14, 2008; amended in R11-2/R11-16 at 35 Ill. Reg. 17959, effective October 14, 2011; amended in R15-1 at 39 Ill. Reg. 1711, effective January 12, 2015; amended in R17-14/R17-15/R18-12/R18-31 at 42 Ill. Reg. 22595, effective November 19, 2018; amended in R19-3 at 43 Ill. Reg. 585, effective December 6, 2018; amended in R19-11 at 43 Ill. Reg. 5995, effective May 2, 2019; amended in R20-8/R20-16 at 44 Ill. Reg. 15331, effective September 3, 2020.
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