Ariz. Rev. Stat. § 28-6955
B. If the board desires to change the priority of a project or to introduce a new project into a proposed or an adopted five year program that would result in changed priorities, the board shall require the director to study the requested change and make a recommendation to the board based on the criteria and policy provided in section 28-6951. If the board changes the priority of projects of a proposed or an adopted five year program, the board shall: