Ariz. Admin. Code § R18-12-274
If a release or suspected release is discovered during temporary closure under R18-12-270 or in the performance of the procedures described in R18-12-272(A), owners and operators shall report the release and perform corrective action as required under A.R.S. §§ 49-1004 and 49-1005 and this Chapter.
Adopted effective July 30, 1996 (Supp. 96-3). Amended by final rulemaking at 25 A.A.R. 3123, effective January 1, 2020 (Supp. 19-4).