AUTHORITY: Implementing Section 20-45 of the Illinois Procurement Code [30 ILCS 500/20-45] and Section 4-103 of the Illinois Highway Code [605 ILCS 5/4-103] and authorized by Section 4-201.1 of the Illinois Highway Code [605 ILCS 5/4-201.1] and Section 5-25 of the Illinois Procurement Code [30 ILCS 500/5-25].
SOURCE: Adopted at 18 Ill. Reg. 9478, effective July 2, 1994; amended at 21 Ill. Reg. 11238, effective July 29, 1997; amended at 22 Ill. Reg. 20393, effective November 4, 1998; amended at 24 Ill. Reg. 18775, effective December 7, 2000; amended at 30 Ill. Reg. 16373, effective October 10, 2006; amended at 32 Ill. Reg. 7989, effective May 8, 2008.