Ill. Admin. Code tit. 35 § 302.509 : ENVIRONMENTAL PROTECTION — WATER QUALITY STANDARDS — LAKE MICHIGAN BASIN WATER QUALITY STANDARDS — Other Sources
a) A source of heated effluent that was not in operation or under construction as of January 1, 1971, must not discharge more than a daily average of 29 megawatts (
0.1 billion British thermal units per hour).
b) Sources of heated effluents that discharge less than a daily average of 29 megawatts (
0.1 billion British thermal units per hour) not in operation or under construction as of January 1, 1971, must meet all requirements of Sections
302.507 and
302.508.
Ill. Admin. Code tit. 35, § 302.509
Amended in R88-1 at 13 Ill. Reg. 5998, effective April 18, 1989