US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDSUBCHAPTER a: PERMITS AND GENERAL PROVISIONSPart 204 — PREVENTION OF SIGNIFICANT DETERIORATIONSubpart B204.64035 Ill. Adm. Code 204.640Reviewing AuthorityYear: 2026Length: 27 wordsOfficial source Section 204.640 Reviewing Authority "Reviewing authority" means the Agency or, in the case of a permit program under 40 CFR 52.21, USEPA or its delegate (the Agency).Previous35 Ill. Adm. Code 204.630Next35 Ill. Adm. Code 204.650