Ariz. Rev. Stat. § 32-594
G. Before adopting a proposed rule, and at least thirty days before the meeting at which the commission will hold a public hearing on the proposed rule, the commission shall provide a notice of proposed rulemaking as follows:
H. The notice of proposed rulemaking shall include:
O. On determination that an emergency exists, the commission may consider and adopt an emergency rule with at least a five-day notice, with an opportunity to comment, provided that the usual rulemaking procedures provided in this compact are retroactively applied to the rule as soon as reasonably possible, and not later than ninety days after the rule's effective date. For the purposes of this subsection, an emergency rule is one that must be adopted immediately to: