Owners and operators are no longer required to maintain financial responsibility under this Article for an underground storage tank after the tank has completed permanent closure or change-in-service in accordance with the requirements of A.R.S. § 49-1008 and the rules promulgated thereunder or, if corrective action is required, after corrective action has been completed and the tank has completed permanent closure or change-in-service under A.R.S § 49-1008 and the rules promulgated thereunder.
Ariz. Admin. Code § R18-12-323