35 Ill. Adm. Code 302.506
Temperature
Section 302
Section 302.506Â Temperature
a)Â Â Â Â Â Â Â Â The owner or operator of a source of heated effluent must
maintain records and conduct studies of the effluents from the source and their
effects as may be required by the Agency or in any permit granted under the
Act.
b)Â Â Â Â Â Â Â Â Backfitting of alternative cooling facilities will be required
if, upon complaint filed in compliance with Board rules, it is found at any
time that any heated effluent causes significant ecological damage to the Lake.