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PVRE Pit#1 Calculation Notes <br /> Calclulations are based on work to an estimated 2.4 acres which lie outside and above the perimeter of the pond. <br /> Groundwater measurements in the area show static water level around 7'below the surface. <br /> The 2.4 acres includes a 25' permeter which has not been mined+approximately 14'of of exposed slope. <br /> Backfilling and gradina <br /> 2,698 ft. Perimeter involved x 39 ft. (slope distance) = 105,222 sq.ft. <br /> 105,222 sq.ft. x 0.42 ft. (depth) = 44,193 cu.ft. <br /> 44,193 cu.ft. / 27 cu.ft. = 1,637 CY <br /> 2.4 0 x 43,560 sq.ft.Area in Acre = 104,544 sq.ft. <br /> Area previously calculated + 105,222 sq.ft. <br /> 209,766 sq.ft. <br /> Depth x 1 ft. <br /> 209,766 cu.ft. <br /> 209,766 cu.ft. / 27 cu.ft. = 7,769 CY <br /> + 1,637 CY <br /> Total Cubic Yards to move 9,406 CY <br /> Dozer will move 795 CY/Hour <br /> 9,406 CY / 795 CY/hour = 11.8 Hrs. <br /> Replace Topsoil <br /> 0.42 ft. (inches of.topsoil) x 104,544 = 43,908 cu.ft. <br /> (Total Area minus the creekbed) <br /> 43,908 cu.ft. / 27 cu.ft. = 1,626 CY <br /> Speedy Mover will move 117 CY/Hour <br /> 1,626 CY / 117 CY/Hour = 13.9 Hrs. <br />