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<br />' Heap Reclamation <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />M <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />A. Heap Grading <br />Heap outslopes will be graded to blend with surrounding <br />topography and cover berms, ponds, and ditches. <br />5 ft x 43,560 ftz/acre x lyd3/27ft3 = 8,067 yd3 <br />Using a D-7 dozer with a U type blade. <br />Average push distance of 100 feet. <br />Job efficiency of 0.83. <br />No altitude adjustment. <br />10 percent slope adjustment. <br />720 yd3/hour x 0,83 x 1.10 = 657 yd3/hour <br />8,067 yd3 x 1 hour/657 yd3 x $ 90/hour = $ 1,105/acre <br />8. Toosoil Replacement <br />1.5 feet of topsoil will be replaced. <br />43,560 ft2/acre x 1.5 ft x 1 yd3/27 ft3 = 2,420 yd3 <br />Using a scraper production of 208 yd3/hour <br />2,420 yd3 x 1 hour/208 yd3 x $ 95/hour = $ 1,105/acre <br />C. Toosoil Grading <br />101,640 yd3 will require grading. <br />Using a dozer production rate of 1,089 yd3/hour <br />2,420 yd3 x 1 hour/1,089 yd3 x $90/hour = $ 200/acre <br />Phase 1 Heaa Grading Costs <br />22.5 acres requiring regrading, 44.3 acres requiring reclamation <br />22.5 acres x $1,105/acre = $24,863 <br />44.3 acres x $1,305/acre = $57,812 <br />TOTAL PHASE 1 HEAP GRADING COSTS = $82,675 <br />L_1P (Revised 4/20/89) <br />(Revised 3/14/89) <br />