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r <br />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 15 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 costs are baseji on 1997 construction. The ENR index for January, 1997 is 5751. <br />A summary of the estimated costs for the proposed improvements is presented in Table 2. <br />Table 2. Summary <br />Item Estimated Cost <br />Bay Ridge <br />Sanitary Sewer Laterals $ 84,968 <br />Trunk Facilities 155,670 <br />Total Project $240,638 <br />The cost estimates do not include easement costs that could be incurred on the project. <br />A total of sixteen units would be served in the Bay Ridge/Hartwood areas, eight of which are in the <br />Bay Ridge neighborhood. It is recommended that the tmnk costs be assessed uniformly over the area <br />to be served. This results in a trunk charge of $9,730.00 for each of the 16 units in the combined <br />service areas. The City would be responsible for $77,840.00 (8 x $9,730.00) until the Hartwood <br />system is constructed. Lateral costs of $10,621.00 would be assessed to the Bay Ridge property <br />owners for each of the 8 units being served. <br />Sanitary Sewer Improvements 8