US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDSUBCHAPTER l: AIR QUALITY STANDARDS AND EPISODESPart 243 — AIR QUALITY STANDARDSSubpart A243.10335 Ill. Adm. Code 243.103ApplicabilityLast amended: 2013Year: 2026Length: 23 wordsOfficial source Section 243 Section 243.103 Applicability The standards in this Part apply throughout the State of Illinois, except as otherwise provided in this Part.Previous35 Ill. Adm. Code 243.102Next35 Ill. Adm. Code 243.104