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<br />Crusher Building (75x70) 5,250 <br />Screening Building 3 000 <br />Total 5 inch floor area 8,250/' <br />-~'~ / <br />Concrete removal cost 5" slab = 8,250 frZ ($5.05/ftz)41,663; -' <br />~~ <br />TOTAL FLOOR AND CONTAINMENT REMOVAL COSTS/~ <br />REMAINING RECLAMATION COST OBLIGATION ~$174~674 v" <br />E.3 Mill Area Earthwork <br />E.3.1 Ripping Mill Area <br />Equipment: D-8N dozer <br />Production rate: 1.5 acres hour <br />Mill area = 16 acres <br />(16 acres / 1.5 acres/hour) ($135 /hour) _ $1,439 <br />TOTAL MILL AREA RIPPING COSTS ~1 ~/L <br />REMAINING RECLAMATION COST OBLIGATION 1,4391 1/ <br />E.3.2 Grading Mill Area <br />Equipment: D-8N dozer <br />Production Rate Assumptions: <br />Assume top foot will be graded over 23.5 acres including outslopes. <br />Area requiring grading = 43,560 fr3 (I ft) / 27 ft3 = 1,613 yd3/acre <br />23.5 acres (1,613 yd3/acre) = 37,906 yd3 <br />Production Rate: <br />Average push distance = 50 ft <br />Production rate = 1,400 yd3/hour (unadjusted) <br />Job efficiency 0.83 <br />Slope adjustment 1.05 <br />No altitude adjustment <br />Material type correction factor (hard) 0.80 <br />Operator efficiency (average) 75% <br />Weight correction factor -earth dry packed 0.90 (i.e., earth dry packed weight <br />estimated to be 2,550 Ibs/yd3 the D-8N has a rated capacity of 2,300 Ib<_/yd3) <br />Weight correction factor = 2,30016s/yd3 / 2,550 lbs/yd3 = 0.90 <br />Adjusted production rate <br />1400 yd3/hr(0.83)(1.05)(0.75)(0.80)(0.90)=1,255 yd3/hour <br />Adjusted production rate = 659 yd3/hour <br />PRELIMINARY DRAFT <br />FOR DISCUSSION PURPOSES ONLY <br />