US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER II: ENVIRONMENTAL PROTECTION AGENCYPart 373 — THIRD STAGE TREATMENT LAGOON EXEMPTIONSSubpart C373.30535 Ill. Adm. Code 373.305Model LimitationsYear: 2026Length: 24 wordsOfficial source Section 373 Section 373.305 Model Limitations If the limiting factors described in Appendix D are present in the stream, the exemption shall be denied.Previous35 Ill. Adm. Code 373.304