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;~ <br />COLOWYO COAL COMPANY <br />1992 - 1996 PERMIT PERIOD <br />TECHNICAL REVISION TR-28 DRILL HOLES AND ADD. TOPSOIL PILES <br />BOND CALCULATION ADD-ON <br /> Number of Cost <br /> Acres Per Acre <br />Activity or LCy's or LCY <br />Additional Regradng Costs <br />Access Roads to Drill Holes <br />@ 1,974 feet by 30' width <br />by 3 ft. average cut or fill <br />using D10N w/100 ft. (-2%), <br />push = 776 Lcy/hr. @ $160.17/op hr. 6,580 $0.21 <br />Additional Revegetation Costs <br />Topsoil Pile TPS #15L and <br />TPS #15M Disturbance 19.35 $258.00 <br />Drill Holes 4-94-1, 4-94-7 and <br />4-94-8 Disturbance <br />@ 200' by 200' avg. 2.75 $258.00 <br />Access Roads to Drill Holes <br />@ 1,974 feet by 60' width 2.72 $258.00 <br />Total Additional Revegetation 24.82 $258.00 <br /> Total Cost Total Depth <br />Sealing and Plugging Drill Holes For Task For Holes <br />Currently Bonded Amount for Monitoring Wells <br />CMLRD Task Number 85 $3,752.84 700 <br /> Total Depth Cost Per <br />Newly Proposed Drill Holes For Holes Foot <br />4-94-1 350 $5.36 <br />4-94-7 320 $5.36 <br />4-94-8 250 $5.36 <br />Total Additional Drill Holes 920 <br />Additional Direct Cost Bond Amount for Technical Revision TR-28 <br />Additional Indirect Cost Bond Amount for Technical Revision TR-28 <br />TOTAL ADDITIONAL BOND AMOUNT FOR TECHNICAL REVISION TR-28 <br />Total <br />$1,381.80 <br />$4,992.30 <br />$709.50 <br />$701.76 <br />$6,403.56 <br />Cost Per <br />Foot <br />$5.36 <br />Total Cost <br />$1,876.00 <br />$1,715.20 <br />$1,340.00 <br />$4,931.20 <br />$12,716.56 <br />$2,198.69 <br />$14,915.25 <br />May 17, 1994 <br />