US lawArizonaRegulationsTitle 18 — Environmental QualityChapter 12 — Department of Environmental Quality - Underground Storage TanksR18-12-916R18-12-916R18-12-916. ReservedReservedLength: 2 wordsOfficial source Cite as Ariz. Admin. Code § R18-12-916R18-12-916. ReservedPreviousR18-12-915NextR18-12-917