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Actual Production Rate =Volume Dfoved/Area + Adjusted Production Rate <br />= 8,067 yds3 of materiaVacre + 664 yds3/hr <br />= 12.14 hrs/acre. <br />b. Hourly Equipment/Labor Costs <br />Same as that for Regrading Final Pits = $147.02/hr. (see Category 1) <br />c. Unit Cost to Rough Grade <br />Unit Cost = (Labor Rate + Equipment Rate] x Production Rate <br />_ $147.02/hr x 12.14 hrs/acre <br />$ 1,786.29/ acre. <br />Cott by Year <br />by Year: Reclamation Reouired x Llnit Cost =Yearly Cost <br />1 124 acres $1,786.29/ acre $221,500 <br />2 9 acres "" $16,077 <br />3 8 acres "" $14?90 <br />4 8 acres "" $14,290 <br />5 9 acres "" $16,077 <br />3. TOPSOII. REPLACEhIENT <br />Site Soecific Details <br />• Topsoil will be replaced on Raad, Facility, Stockpile, and Mined Areas with Cat 637 <br />D P•P scrapers. <br />• Cat 637 D P-P scrapers have a 4% rolling resistance and a 6% downhill loaded <br />grade. <br />• Each haul will be an average 3,500 feet and move = 25 yds3 of material. <br />• Topsoil is replaced to an average depth of 11 inches in the bfofPat area, requiring <br />1,480 yds3/acre; in West Ridge the average depth is 7.3 inches, requiring 980 <br />yds3/acre. <br />IjQi C'.°c . <br />a. Production Rate <br />VolumelCycle = 25 yds3 of materiallcycle <br />6 <br />December 12, 1991 <br />