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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 grading <br /> 2,698 ft. Perimeter involved x 39 ft. (slope distance) = 105,222 sq.ft. <br /> 105,222 sq.ft. x 1.42 ft. (depth) = 149,415 cu.ft. <br /> 149,415 cu.ft. / 27 cu.ft. = 5,534 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 /> + 5,534 CY <br /> Total Cubic Yards to move 13,303 CY <br /> Dozer will move 795 CY/Hour <br /> 13,303 CY / 795 CY/hour = 16.7 Hrs. <br /> Replace Topsoil/Overburden <br /> 1.42 ft. (inches of. topsoil) x 104,544 = 148,452 cu.ft. <br /> (Total Area minus the pond) <br /> 148,452 cu.ft. / 27 cu.ft. = 5,498 CY <br /> Speedy Mover will move 117 CY/Hour I <br /> 5,498 CY / 117 CY/Hour = 47.0 Hrs. C <br />