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TWENTYMILE COAL, LLC — FOIDEL CREEK MINE (C -82 -056) <br />WCR MONITORING WELL RELOCATION (MR14 -279) <br />RECLAMATION COST ESTIMATE <br />Plug and Seal Drillhole <br />Cement drillhole — (7.5cy/hole x $120 /cy) $900 <br />Seal drillhole w/ plug -gel or bentonite pellets — (54cy/hole x $100 /cy) 5,400 <br />Rig and Labor Cost ($4,370) 4,370 <br />$10,170 <br />Backfill, Grade, Replace Soil, and Reseed Surface Disturbance <br />Included in calculated reclamation costs for 6MN Facilities Area <br />Subtotal Direct Costs $10,170 <br />CDRMS Administrative and Overhead Costs (a@ 8 %) 820 <br />Total Estimated Reclamation Cost $10,990 <br />MR12 -262 04/29/12 <br />