Section 502.303  New Source Standards

Despite any other provision of this Subtitle, if a point source started construction after the enactment date of the CWA and was constructed to meet the applicable federal "standard of performance" defined in Section 306 of the CWA, the point source is not subject to any more stringent federal "standard of performance" during a ten-year period beginning on the date the construction is completed or during the depreciation or amortization period of the facility for Section 167 or 169 (or both) of the Internal Revenue Code of 1954, whichever period ends first (26 U.S.C. 167 and 169).

(Source:  Amended at 48 Ill. Reg. 3196, effective February 15, 2024)