US lawArizonaRegulationsTitle 18 — Environmental QualityChapter 12 — Department of Environmental Quality - Underground Storage TanksR18-12-611R18-12-611R18-12-611. ExpiredExpiredLast amended: 2017Length: 2 wordsOfficial source Cite as Ariz. Admin. Code § R18-12-611R18-12-611. ExpiredPreviousR18-12-610NextR18-12-612