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PVRE Pit#1 Calculation Notes <br /> Alternative Cost Estimate <br /> Calclulations are based on work to an estimated 9.9 acres. <br /> Backfilling and grading <br /> 43,560 sq.ft. Area x 9.9 Ac. = 431,244 sq.ft. <br /> 431,244 sq.ft. x 1 ft. (depth) = 431,244 cu.ft. <br /> 431,244 cu.ft. / 27 cu.ft. = 15,972 CY <br /> 9.9 Ac/ x 43,560 sq.ft.Area in Acre = 431,244 sq.ft. <br /> 431,244 sq.ft. <br /> Depth x 1 ft. <br /> 431,244 cu.ft. <br /> 431,244 cu.ft. / 27 cu.ft. = 15,972 CY <br /> + 15,972 CY <br /> Total Cubic Yards to move 31,944 CY <br /> Dozer will move 795 CY/Hour <br /> 31,944 CY / 795 CY/hour = 40.2 Hrs. <br /> Replace Topsoil/Overburden <br /> 1.42 ft. (inches of. topsoil) x 431,244 = 612,366 cu.ft. <br /> 612,366 cu.ft. / 27 cu.ft. = 22,680 CY <br /> Speedy Mover will move 117 CY/Hour <br /> 22,680 CY / 117 CY/Hour = 193.8 Hrs. <br />