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7 <br /> Public Amenities Master Plan <br /> Preliminary Cost Estimate July 2009 <br /> Railroad Corridor Enhancements <br /> Description of Potential Project Elements <br /> Upgrade and reconstruct existing gravel maintenance road to asphalt paved trail capable of <br /> supporting maintenance and emergency vehicles; alignment connects Simpson Pad at 41St <br /> Street to 3-Acre Park at 36th Street, including connections to 41St overpass; short bridge <br /> and boardwalk segments at upper end of Wetland C; reinforced grass surface PUD access <br /> road; site furnishings (benches and interpretive viewpoints) along trail; restore disturbed <br /> wetland & wetland buffer areas. Assume outfall to River and planting on the Landfill slope <br /> is under developer's scope of work for mitigation. <br /> Estimated Area Costs Low High <br /> Earthwork $400,000. $466,000. <br /> Wetland creation and enhancement 700,000. 1,208,000. <br /> Utilities and lighting 0. 0. <br /> Drainage 80,000. 91,000. <br /> Structures 80,000. 90,000. <br /> Site furnishings and signage 125,000. 140,000. <br /> Pavement 93,000. 93,000. <br /> Soil preparation and planting 52.000. 52.000. <br /> Subtotal 1,530,000. 2,140,000. <br /> 10% Mobilization 153,000. 214,000. <br /> 20% Contingency 306.000. 428.000. <br /> Subtotal 1,989,000. 2,782,000. <br /> 9.2% Sales tax 183,000. 256,000. <br /> 20% Engineering and Construction Admin. 397,800. 556,400. <br /> TOTAL $2,569,800. $3,594,400. <br /> Page 3 of 9 <br /> 96 <br />