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Permit Amen 6)-Climax Mine • 0 <br />CLIMAX MINE RECLAMATION COST ESTIMATE <br />Financial Reporting Unit Rates <br />Interceptors - decommission only <br />Assumptions: <br />(1) Interceptors will no longer be needed at the close of the mine. <br />(2) Interceptor ditches and canals can be graded out and revegetaled using conventional reclamation equipment. <br />(3) No topsoil or growth media other than graded materials will be required to support vegetation. <br />(4) Revegetation work is covered elsewhere. <br />(5) Open Pit Interceptors are needed for both 2010 and AM06 scenarios. <br />Tasks: <br />(1) Pull cut slope down into interceptor ditch with excavator and <br />(2) grade out with dozer to conform with surrounding topography. <br />Timing <br />2011+ <br />Total Cost <br />$163,818 <br />Calculations <br /> <br />Task/Area Initial Swell <br /># of. Equip Qty Units <br />Volume Factor Productio <br />Units <br />n <br />Hire Req'd CostfUnit <br /> <br />Equip <br />Total Equip Cost Cost/Unit Total Labor Cost/Unit <br /> <br />Labor Cost Materials Total <br />Material <br />Cost <br />Total Cost <br />Pull cut slope into ditch <br />330 Excavator <br />Chalk Mtn. Interceptor 50,000 cy 300 cy/hr 166.67 $129.16 $21,526 $30.21 $5,035 $26,561 <br />East Interceptor (E Dump/McNulty/Hwy 91) 22,222 cy 300 cy/hr 74.07 $129.16 $9,567 $30.21 $2,238 $11,805 <br />East Interceptor (Hwy 91 to Clinton) 34,722 cy 300 cy/hr 115.74 $129.16 $14,949 $30.21 $3,496 $18,445 <br />West Interceptor (Sheep Mtn to Searle Cr) 37,500 cy 300 cy/hr 125.00 $129.16 $16,144 $30.21 $3,776 $19,921 <br />West Interceptor (Searle Cr to Tucker Cr) 44,444 cy 300 cy/hr 148.15 $129.16 $19,134 $30.21 $4,475 $23,610 <br />Open Pit North Channel Interceptor 16,111 cy 300 cy/hr 53.70 $129.16 $6,936 $30.21 $1,622 $8,559 <br />Open Pit South Channel Interceptor 18,333 cy 300 cy/hr 61.11 $129.16 $7,893 $30.21 $1,846 $9,739 <br />Upper North Interceptor 16,667 cy 300 cy/hr 55.56 $129.16 $7,175 $30.21 $1,678 $8,854 <br />Lower North Interceptor 5,556 cy 300 cy/hr 18.52 $129.16 $2,392 $30.21 $559 $2,951 <br />Grade surface <br />D6 Dozer <br />Grade disturbance & blend w/ surrounding 121.76 acres 2 hrs/ac 243.53 $103.24 $25,142 $33.81 $8,232 $33,374 <br /> Hrs Req'd - Total Equip Cost Total Labor Cost Total Material C Total Cost <br />TOTAL COSTS 1,062 $ 130,858 $ 32,959 $ ,` - $ 163,818 <br />Exhibit L Feb 2011