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PVRE Pit#1 Calculation Notes <br /> Alternative Cost Estimate <br /> Calclulations are based on work to an estimated 9.4 acres. <br /> Backfilling and grading <br /> 43,560 sq.ft. Area x 9.4 Ac. = 409,464 sq.ft. <br /> 409,464 sq.ft. x 1 ft. (depth) = 409,464 cu.ft. <br /> 409,464 cu.ft. / 27 cu.ft. = 15,165 CY <br /> 9.4 Ac/ x 43,560 sq.ft.Area in Acre = 409,464 sq.ft. <br /> 409,464 sq.ft. <br /> Depth x 1 ft. <br /> 409,464 cu.ft. <br /> 409,464 cu.ft. / 27 cu.ft. = 15,165 CY <br /> + 15,165 CY <br /> Total Cubic Yards to move 30,331 CY <br /> Dozer will move 795 CY/Hour <br /> 30,331 CY / 795 CY/hour = 38.2 Hrs. <br /> Replace Topsoil/Overburden <br /> 1.42 ft. (inches of. topsoil) x 409,464 = 581,439 cu.ft. <br /> 581,439 cu.ft. / 27 cu.ft. = 21,535 CY <br /> Speedy Mover will move 117 CY/Hour <br /> 21,535 CY / 117 CY/Hour = 184.1 Hrs. <br />