Ariz. Rev. Stat. § 48-620
B. Notwithstanding section 48-507, after the governing body passes a resolution or notice declaring its intention to order an improvement district for underground utility facilities, the governing body shall hold a hearing at least thirty days after the completion of the posting and publication of the notice of intention pursuant to section 48-506. At the hearing, the governing body shall consider the issue of ordering an election on the formation of the improvement district and shall receive public comment on the proposed district. Section 48-507, regarding written protests of the proposed improvement, does not apply to a district formed pursuant to this section. The governing body may only order the election on the issue of formation of the district if the owners of real property in the district have signed and submitted petitions to the clerk of the governing body in support of the formation of the district. The petitions shall comply with the following:
F. The governing body shall determine the boundaries of the district and designate the transmission facilities and, if applicable, any independent parallel facilities, to be placed underground and shall obtain from the coordinating utility an accurate statement of the costs of the project, including an estimate of the average cost in assessments on an average single family residence in the district. The amount shall be included in the engineer's estimate required by section 48-577. The costs shall include:
G. On receipt of an accurate estimate of the costs of the project, the governing body shall call a simplified ballot card election in the area affected by the proposed district. The simplified ballot card shall contain the words for a district formation election "district, yes" and "district, no" and for an assessment election "assessment, yes" and "assessment, no". A single simplified ballot card may be used for both the question of the formation of the district and the question of the assessment. The election may be conducted in a simplified format and administered by the governing body. The governing body shall mail to all registered voters and property owners within the proposed district simplified ballot cards with return postage prepaid. The simplified ballot card shall clearly state that to be valid a voted ballot card shall be returned to the governing body within thirty days after the governing body mails the ballot card and a ballot card that is not timely returned shall not be counted. A person who is qualified to vote in a municipal election for that municipality or a property owner who owns land within the proposed improvement district is qualified to vote in an election for a municipal improvement district formed pursuant to this section, except that only residents of or property owners in the area that is within the proposed district may vote. If a majority of the persons voting with the simplified ballot card approves the formation of the district and if a majority of the persons voting with the simplified ballot card approves the assessment, the governing body may form the district and make the assessment. If more than one governing body is affected by a proposed district, each governing body may form its own district for the portion of the work within its jurisdiction. Assessments for districts that are formed for a portion of the same project shall be distributed between districts in proportion to the benefits to be received. When the governing body acquires jurisdiction to order the work, it shall not call for construction bids but may enter into a contract or contracts with the utility, utilities or licensed cable television system whose facilities are to be placed underground. Prior to entering into a contract or contracts the coordinating utility shall submit a final report to the municipality. The amount stated in the final report may be based on detailed engineering studies. If the amount stated in the final report exceeds the amount stated in the preliminary report the governing body may either:
U. In this section, unless the context otherwise requires: