Ariz. Rev. Stat. § 48-853
A. A fire district formed pursuant to this article, through its board shall:
9. Act within sixty days after the formation of the district to do any of the following:
(c) Before applying this subdivision, request an independent review by the county attorney of the negotiations, if any, that were conducted as prescribed in subdivision (a) of this paragraph and the request for proposals and resulting bids. After the independent review, the county attorney shall certify whether the negotiations and proposals were based on commercially reasonable assumptions. If the county attorney certifies that any one or more of the provisions are not commercially reasonable, the district and the other party to the negotiations have ten days to cure and continue negotiations before resubmitting information on the negotiations and proposals to the county attorney for certification. Notwithstanding any other law, the county attorney shall have access to sealed bids for purposes of this subdivision. The county attorney shall review and issue a certification pursuant to this subdivision within thirty days after the information and documents regarding negotiations and proposals are submitted to the county attorney. If a fire district does not enter into an intergovernmental agreement pursuant to subdivision (a) of this paragraph or enter into a contract pursuant to subdivision (b) of this paragraph, the surrounding municipality shall provide fire protection and emergency medical services except for services regulated pursuant to title 36, chapter 21.1 in the district immediately on request by the district, following final certification by the county attorney. The municipality shall be compensated by the district as follows:
10. Require that any intergovernmental agreement or contract between the district and a provider of fire protection services include:
B. A fire district formed pursuant to this article, through its board, may: