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• <br />Rock Bin <br />The rock bin is located on the east side of the breaker building Map 11, Sheet 3 —East Portal Facilities. <br />The bin has a concrete floor, steel and wood frames 2 sides. <br />Site Plan Area: Rock Box at Breaker <br />Item Concrete Steel and Wood <br />Length (ft) <br />80 <br />Width (ft) <br />Width (ft) <br />Depth/height (ft) <br />Deptb/height (ft) <br />10 <br />Units <br />Quantity <br />20 <br />3,000 <br />Units <br />CY <br />LBS <br />Unit cost <br />$74 <br />$0.13 <br />Total direct cost <br />$1,480 <br />$399 <br />Job supervision hours <br />8 <br />8 <br />Job supervision cost <br />$333 <br />$333 <br />Profit, insurance, and bond <br />$193 <br />$52 <br />Contract <br />$2,007 <br />$785 <br />Engineering <br />$85 <br />$33 <br />Reclamation management <br />$100 <br />$39 <br />Estimated bond <br />$2,193 <br />$857 <br />:7 <br />Rope Slope Portal Drain <br />The rope slope invert requires a drain to minimize the surface runoff of water into the slopes. <br />Site Plan Area: Rope Slope Portal <br />Retaining Wall <br />and Trench <br />Item Drain <br />Length (ft) <br />80 <br />Width (ft) <br />12 inch <br />Depth/height (ft) <br />Quantity <br />10 <br />Units <br />CY <br />Unit cost <br />$74 <br />Total direct cost <br />$740 <br />Job supervision hours <br />8 <br />Job supervision cost <br />$333 <br />Profit, insurance, and bond <br />$97 <br />Contract <br />$1,170 <br />Engineering <br />$50 <br />Reclamation management <br />$59 <br />Estimated bond <br />$1,278 <br />TR 54 Exhibit 28 —Page 149 Revised 11 -03 -2010 <br />