Wyo. Stat. § 37-13-107
The public utility or utilities report shall set forth an estimate of the total underground conversion costs for the district and shall also indicate the cost of underground conversion of facilities of the public utility located within the boundaries of the various parcels or lots within the district. The report shall also contain the public utility's recommendations concerning the engineering feasibility of the project for the district proposed insofar as the physical characteristics of the district are concerned. The report shall make recommendations by the public utility concerning inclusion or exclusion of areas within the district or immediately adjacent to the district. The governing body shall consider the public utility's recommendations concerning feasibility and may amend the boundaries of the proposed improvement district provided the costs and feasibility report of the public utilities contains a cost figure on the district as amended, or it may request a new costs and feasibility report from the public utilities concerned on the basis of the amended district. The cost estimate contained in the report shall not be considered binding on the public utility if construction is not commenced within six (6) months of the submission of the estimate for reasons not within the control of the public utility. Should such a delay result in a significant increase in the conversion cost, new hearings shall be held on the creation of the district. In the event that a ten percent (10%) or less increase results, only the hearing on the assessments need be held again.
W.S. 37-13-107