US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER II: ENVIRONMENTAL PROTECTION AGENCYPart 270 — CLEAN AIR ACT PERMIT PROGRAM PROCEDURESSubpart A270.10335 Ill. Adm. Code 270.103Existing CAAPP SourceYear: 2026Length: 25 wordsOfficial source Section 270 Section 270.103 Existing CAAPP Source "Existing CAAPP source" means a CAAPP source that commenced operation prior to the effective date of the CAAPP.Previous35 Ill. Adm. Code 270.102Next35 Ill. Adm. Code 270.104