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7 <br /> Public Amenities Master Plan <br /> Preliminary Cost Estimate July 2009 <br /> Wetland D Improvements <br /> Description of Potential Project Elements <br /> Remove invasive plant species; supplement lowland areas with hummocks of import site <br /> soil; plant with upland native plant species to provide greater diversity and improved <br /> function of wetland. <br /> Estimated Area Costs Low High <br /> Earthwork $ 85,000. $108,000. <br /> Wetland enhancement 330,000. 416,000. <br /> Utilities and lighting 0. 0. <br /> Drainage 5,000. 5,000. <br /> Structures 0. 0. <br /> Site furnishings and signage 5,000. 5,000. <br /> Pavement 0. 0. <br /> Soil preparation and planting 0. 0. <br /> Subtotal 425,000. 534,000. <br /> 10% Mobilization 42,500. 53,400. <br /> 20%Contingency 85,000. 117.500. <br /> Subtotal 552,500. 704,900. <br /> 9.2% Sales tax 50,800. 64,900. <br /> 20% Engineering and Construction Admin. 110,500. 141,000. <br /> TOTAL $713,800. $910,800. <br /> Page 7 of 9 <br /> 100 <br />