Section 357A.12 - Plans, specifications, and procedures1. As soon as reasonably possible after incorporation of a district, the board shall file with the supervisors and the department copies of the plans and specifications for, and estimates of the cost of, any improvements authorized by this chapter which the board proposes to construct or acquire. The board shall determine a reasonable fee which each member shall pay for the privilege of utilizing the district's facilities, and which shall be known as a benefit unit. Benefit units may be classified. The board, by publication in a newspaper of general circulation in the district, shall generally describe the planned improvements, the area to be served and the fee members will be required to pay for each service connected to the water system.2. The procedures for competitive bidding specified in chapter 26 and for emergency repairs as specified in section 384.103, subsection 2, shall apply to construction carried out pursuant to this chapter.