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Revised 2/18/19 Amended Ensminger Pit#2 Calculation Notes <br /> Calclulations are based on work to a maximum of 83.9 affected acres which should be the maximum disturbed. <br /> Of the 83.9 acres, 11.8 actually are creekbed which will not be reclaimed, leaving 72.1 net acres. <br /> Backfilling and-grading <br /> 12,790 ft. Perimeter involved x 60 ft. (slope distance) = 767,400 sq.ft. <br /> 767,400 sq.ft. x 0.42 ft. (depth) = 322,308 cu.ft. <br /> 322,308 cu.ft. / 27 cu.ft. = 11,937 CY <br /> 72.1 Ac. x 43,560 sq.ft.Area in Acre = 3,140,676 sq.ft. <br /> Area previously calculated + 767,400 sq.ft. <br /> 3,908,076 sq.ft. <br /> Depth x 1 ft. <br /> 3,908,076 cu.ft. <br /> 3,908,076 cu.ft. / 27 cu.ft. = 144,744 CY <br /> + 11,937 CY <br /> Total Cubic Yards to move 156,681 CY <br /> Dozer will move 795 CY/Hour <br /> 156,681 CY / 795 CY/hour = 197.1 Hrs. <br /> Replace Topsoil <br /> 0.42 ft. (inches of. topsoil) x 3,140,676 = 1,319,084 cu.ft. <br /> (Total Area) <br /> 1,319,084 cu.ft. / 27 cu.ft. = 48,855 CY <br /> Replace Overburdern (minimum anticipated) <br /> 0.5 ft. (approx. feet of x 3,140,676 = 1,570,338 cu.ft. <br /> overburden) (Total Area) <br /> 1,570,338 cu.ft. / 27 cu.ft. = 58,161 CY <br /> Speedy Mover will move 117 CY/Hour <br /> 48,855 CY <br /> 58,161 CY <br /> 107,016 CY / 117 CY/Hour = 914.7 Hrs. <br />