US lawArizonaRegulationsTitle 18 — Environmental QualityChapter 12 — Department of Environmental Quality - Underground Storage TanksR18-12-321R18-12-321R18-12-321. RepealedRepealedLast amended: 1996Length: 2 wordsOfficial source Cite as Ariz. Admin. Code § R18-12-321R18-12-321. RepealedPreviousR18-12-320NextR18-12-322