US lawArizonaRegulationsTitle 18 — Environmental QualityChapter 2 — Department of Environmental Quality - Air Pollution ControlR18-2-906R18-2-906R18-2-906. RepealedRepealedLast amended: 1988Length: 2 wordsOfficial source Cite as Ariz. Admin. Code § R18-2-906R18-2-906. RepealedPreviousR18-2-905NextR18-2-907