US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDSUBCHAPTER a: PERMITS AND GENERAL PROVISIONSPart 201 — PERMITS AND GENERAL PROVISIONSSubpart E201.18735 Ill. Adm. Code 201.187Requirement for a Revised Permit (Repealed)Last amended: 1998Year: 2026Length: 10 wordsOfficial source Section 201 Section 201.187 Requirement for a Revised Permit (Repealed)Previous35 Ill. Adm. Code 201.181