Ariz. Admin. Code § R12-4-605
A. A party shall not communicate, either directly or indirectly, with a Commissioner about any substantive issue in a pending contested case or appealable agency action, unless:
B. A Commissioner who receives an ex parte communication shall place on the public record of the proceeding:
Adopted effective December 22, 1987 (Supp. 87-4). Amended by final rulemaking at 10 A.A.R. 2245, effective July 6, 2004 (Supp. 04-2). Section R12-4-605 renumbered to R12-4-606; new Section R12-4-605 renumbered from R12-4-604 and amended by final expedited rulemaking at 24 A.A.R. 393, effective February 6, 2018 (Supp. 18-1).