US lawArizonaRegulationsTitle 12 — Natural ResourcesChapter 7 — Oil and Gas Conservation CommissionR12-7-257R12-7-257R12-7-257. ReservedReservedLength: 2 wordsOfficial source Cite as Ariz. Admin. Code § R12-7-257R12-7-257. ReservedPreviousR12-7-256NextR12-7-258