Ill. Admin. Code tit. 35, § 811.104 - Survey Controls
a) The boundaries of all waste disposal units, property boundaries, disturbed areas, and the permit area for facilities subject to the requirements of Section 21 of the Environmental Protection Act (Act) (Ill. Rev. Stat. 1989, ch. 1111/2, par. 1021) shall be surveyed and marked by a professional land surveyor.
b) All stakes and monuments shall be clearly marked for identification.
c) All stakes and monuments shall be inspected annually and surveyed no less frequently than once in five years by a professional land surveyor, who shall also replace monuments discovered during an inspection.
d) Control monuments shall be established to check vertical elevations. The control monuments shall be established and maintained by a professional land surveyor.
Notes
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