US lawArizonaRegulationsTitle 18 — Environmental QualityChapter 12 — Department of Environmental Quality - Underground Storage TanksR18-12-918R18-12-918R18-12-918. ReservedReservedLength: 2 wordsOfficial source Cite as Ariz. Admin. Code § R18-12-918R18-12-918. ReservedPreviousR18-12-917NextR18-12-919