AUTHORITY: Implementing Section 4 and authorized by Section 5 of the Illinois State Agency Historic Resources Preservation Act (Ill. Rev. Stat. 1991, ch. 127, pars. 133c24 and 133c25).
SOURCE: Adopted at 15 Ill. Reg. 18151, effective December 9, 1991; amended at 17 Ill. Reg. 1521, effective January 25, 1993.