US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDSUBCHAPTER d: UNDERGROUND INJECTION CONTROL AND UNDERGROUND STORAGE TANK PROGRAMSPart 731 — UNDERGROUND STORAGE TANKSSubpart G731.17035 Ill. Adm. Code 731.170Temporary Closure (Repealed)Last amended: 1992Year: 2026Length: 7 wordsOfficial source Section 731 Section 731.170 Temporary Closure (Repealed)Next35 Ill. Adm. Code 731.171