US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 501 — GENERAL PROVISIONSSubpart B501.24035 Ill. Adm. Code 501.240ConstructionLast amended: 2024Year: 2026Length: 12 wordsOfficial source Section 501 Section 501.240 Construction Start of on-site fabrication, erection, or installation.Previous35 Ill. Adm. Code 501.238Next35 Ill. Adm. Code 501.241