US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDSUBCHAPTER d: UNDERGROUND INJECTION CONTROL AND UNDERGROUND STORAGE TANK PROGRAMSPart 731 — UNDERGROUND STORAGE TANKSSubpart G731.17435 Ill. Adm. Code 731.174Closure Records (Repealed)Last amended: 1992Year: 2026Length: 7 wordsOfficial source Section 731 Section 731.174 Closure Records (Repealed)Previous35 Ill. Adm. Code 731.173