Ill. Admin. Code tit. 35, § 702.149
d) Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise authorized by the appropriate Act, any substances or parameters at any location.
BOARD NOTE: Derived from 40 CFR 144.51(i) and 270.30(i) (2005).
A permittee must allow an authorized representative of the Agency, upon the presentation of credentials and other documents as may be required by law, to do any of the following:
(Source: Amended at 31 Ill. Reg. 438, effective December 20, 2006)