2011-03-01_REVISION - M1977493 (6)

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Permk AmBr*M-O6) -Climax Mine 0 • CLIMAX MINE RECLAMATION COST ESTIMATE Financial Reporting Unit Rates Storke Complex Assumptions (1) Reconstruction of the Arkansas River through the Storke Yard is covered elsewhere. (2) Water treatment for seepage and drainage in the Storke area will be required indefinitely thereby warranting perpetual use of SW PPS & 5-Shaft. (3) Following extensive reclamation work in 2004 through 2007, there will still remain approx. 10 acres of "disturbed" areas requiring reclamation. (4) Revegetation work is covered elsewhere. Tasks (1) Minor grading of areas remaining from previous work in 2004 and 2005 - assume D6 dozer work on 10 acres @ 2 hrs / acre (2) Haul biosolids from Robinson Staging Area and replacement on 10 acres at 4 inches thick = 5323 cy @ Haul Distance = 2.6 miles Timing 2011+ Total Costs $33,512 Calculations TaskArea uanti Units Productivity Units Hrs Reg'd CosUUnit Total Equipment CosUUnit Labor Total Labor Cost Cost/Unit Total Materials & Total Cost' Equipment Cost Material Cost Other Minor Grading of Disturbed Areas CAT D6 10 acres 2 hrs/ac 20 $103.24 $2,064.82 $33.81 $676.10 $2,741 Load Biosolids at Robinson 926 Loader 5,323 cy 40.13 $46.88 $1,881.25 $30.40 $1,220.04 $3,101 Haul Biosolids from Robinson Generic Truck 5,323 cy 37.90 cy/hr 140.44 $104.50 $14,676.37 $30.02 $4,216.02 $18,892 Spread Biosolids at Storke CAT D6 5,323 cy 200 cy/hr 26.62 $103.24 $2,747.76 $33.81 $899.73 $3,647 Load Biosolids at Robinson 926 Loader 1,065 cy 8.03 $46.88 $376.39 $30.40 $244.10 $620 Haul Biosolids from Robinson Generic Truck 1,065 cy 37.90 cy/hr 28.10 $104.50 $2,936.38 $30.02 $843.52 $3,780 Spread Biosolids at Storke CAT D6 1,065 cy 200 cy/hr 5.33 $103.24 $549.76 $33.81 $180.01 $730 Hrs Req'd Total Equipment Cost Total Labor Cost Total Material C< Total'Cost TOTAL COSTS 268.64 $25,232.73 $8,279.53 $0:00 : $33,,512 Exhibit L Feb 2011