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Frvrear Pit #2 Calculation Notes <br />Calclulations are based on work to 10 acres which is the maximum area open at one time. <br />2,900 ft. Perimeter involved x <br />for area outside creek <br />450 R Floor of pit area <br />sides of creek <br />502,500 sq.ft. x <br />1,005,000 cu.R / <br />Dozer will move 795 CY/Hour <br />37,222 CY / <br />150 R (slope distance) = 435,000 sq.R <br />150 ft. ft7»54Qsq• R <br />502,500 sq. ft. <br />2 R (depth) = 1,005,000 cu.ft. <br />27 cu.R = 37,222 CY <br />795 CY/hour = 46.8 Hrs. <br />Replace Overburden <br />--. 2 ft. (feet of overburdenx 502,500 = 1,005,000 cu.ft. <br />(26 Acres + Creek Perimeter) <br />1,005,000 cu.ft. / 27 cu.ft. = 37,222 CY <br />Dozer will move 795 CY/Hour <br />37,222 CY ! 795 CY/Hour = 46.6 Hrs. <br />Replace Topsoil <br />_--. 0.5 R (inches of. topsoil) x 502,500 = 251,250 cu.ft. <br />(26 Acres + Creek Perimeter) <br />251,250 cu.ft. / 27 cu.ft. = 9,306 CY <br />Speedy Mover will move 117 CY/Hour <br />9,306 CY / 117 CY/Hour = 79.5 Hrs. <br />