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Estimated construction costs for the proposed trunk sanitary sewer and water <br />improvements have been taken from the September 1994 Draft East Trunk Highway 10 <br />Study and modified to reflect changes to the proposed alignments. Estimated costs for <br />trunk sanitary sewer include a regional lift station adjacent to TH 169, a regional lift <br />station within the Trott Creek Farms development, horizontal borings under TH 169 and <br />the BNSF Railroad, forcemain, and gravity sewer ranging in size from 8 to 24-inch <br />diameter pipe. Trunk watermain costs include horizontal borings under TH 169, the <br />BNSF Railroad, and TH 10, 10 to 16-inch trunk watermain, hydrants, valves and other <br />appurtenances. <br /> <br />Costs have been estimated for the construction of storm drainage improvements along the <br />proposed transportation corridor and the realignment of CSAH 13. These estimated costs <br />include storm sewer pipe, manhole structures, and stormwater ponds as needed to treat <br />surface runoff from the proposed transportation corridor. Costs associated with the <br />construction of a regional pond and culvert construction under the BNSF Railroad have <br />also been included in the estimate. <br /> <br />In accordance with the City's assessment manual, the overhead costs have been estimated <br />as 28% of the total estimated construction costs for each project area. For a project of <br />this size, an overhead cost of 28% of the total estimated construction cost is a <br />conservative estimate. As land acquisition costs have not been estimated a 28% overhead <br />cost may provide monies for administration costs associated with land acquisition. <br /> <br />The overhead cost includes city administration, engineering design, construction staking <br />and inspection, and fiscal and legal expenses. The estimated costs are as shown in Table <br />1. <br /> <br />Feas-800.1 I0 25 800-110-J <br /> <br /> <br />