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9/3/2018 Amended Ensminger Pit#2 Calculation Notes <br /> Calclulations are based on work to a maximum of 76.4 affected acres which should be the maximum disturbed. <br /> Of the 76.4 acres, 11.8 actually are creekbed which will not be reclaimed, leaving 64.6 net acres. <br /> Backfilling and aradinp <br /> 11,460 ft. Perimeter involved x 60 ft. (slope distance) = 687,600 sq.ft. <br /> 687,600 sq.ft. x 0.42 ft. (depth) = 288,792 cu.ft. <br /> 288,792 cu.ft. / 27 cu.ft. = 10,696 CY <br /> 64.6 Ac. x 43,560 sq.ft.Area in Acre = 2,813,976 sq.ft. <br /> Area previously calculated + 687,600 sq.ft. <br /> 3,501,576 sq.ft. <br /> Depth x 1 ft. <br /> 3,501,576 cu.ft. <br /> 3,501,576 cu.ft. / 27 cu.ft. = 129,688 CY <br /> + 10,696 CY <br /> Total Cubic Yards to move 140,384 CY <br /> Dozer will move 795 CY/Hour <br /> 140,384 CY / 795 CY/hour = 176.6 Hrs. <br /> Replace Topsoil <br /> 0.42 ft. (inches of. topsoil) x 2,813,976 = 1,181,870 cu.ft. <br /> (Total Area) <br /> 1,181,870 cu.ft. / 27 cu.ft. = 43,773 CY <br /> Replace Overburdern (minimum anticipated) <br /> 0.5 ft. (approx.feet of x 2,813,976 = 1,406,988 cu.ft. <br /> overburden) (Total Area) <br /> 1,406,988 cu.ft. / 27 cu.ft. = 52,111 CY <br /> Speedy Mover will move 117 CY/Hour <br /> 43,773 CY <br /> 52,111 CY <br /> 95,884 CY / 117 CY/Hour = 819.5 Hrs. <br />