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IV. Cost Analysis <br />Detailed cost estimates for the proposed improvements are presented in the appendices. These costs <br />include a 5 percent contingency, a 20 percent allowance for design, inspection, legal, and <br />administration costs, and a 5 percent allowance for capitalized interest and bonding costs during <br />construction. The estimated costs shown in this report are based on 1999 unit prices and can be <br />related to the ENR Construction Cost Index for March, 1999 of 5,986. A summary of the estimated <br />costs for the proposed improvements is presented in Table 1. <br />Table 1. Summary <br />Area # of Services Figure #Estimated Cost Assessment <br />Webber Hills Gravity Sewer 37 2 $1,068,000 $28,900 <br />Webber Hiils-Pressure Sewer 37 3 $610,000 $16,500 <br />The cost estimates do not include easement costs that could be incurred on the project. <br />It is recommended that the sewer construction costs be assessed uniformly over the area to be served, <br />based on the number of services to each property. The assessments shown above reflect this <br />recommendation. <br />Webber Hills Sanitary Sewer Improvements