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1 <br />• • <br />sheet 1 of 4 <br />Colorado Division of Minerals and Geology <br />RECLAMATION COST SUMMARY FORM <br />_____________________________ <br />PERMIT NUMBER M-77-020 PREP. BY: SSS FILENAME: M020-0 <br />DATE 20-NOV-97 OPERATION: Pit No. 1 <br />PERMIT ACTION Amendment No. 1 Recalculation <br />1. DIRECT COSTS <br />GRAND TOTAL BOND AMOUNT E22, 088 <br />A. EARTHWORK - BACKFI LUNG 8 ROUGH GRADING <br />Task No.~ Task Description ~ Cost (E) <br />________I__________________________________________________I___________ <br />1 ~ Dewater West Lake to 10 ft. below expected water I E5,379 <br />level. 45,453,267 gal. iJ 350,000 gph. = 130 hrs. <br />5.4 days + .5 day reg radin9 time iJ 117,000 gpd. <br />infiltration rate = 690,300 gal. Pump iJ 540.80/hr~ <br />2 ~ Reduce West Lake wesT slope from 2:1 grade to 3:1~ E204 <br />from ground level to 10 ft. below expected water <br />level. 600 ft. iJ 1.5 c.y./l.f. = 1,200 c.y. <br />3 ~ Dewater East Lake to 14 ft. below expected water ~ E2,413 <br />level. 20,297,972 gal. a 350,000 gph. = 58 hrs. <br />2.4 days + 1 day regrading time a 117,000 gpd. <br />infiltration rate = 399,722 gal. Pump a 540.80/hr~ <br />4 ~ Reduce East Lake Highwall from .5:1 grade to 3:1 ~ E1,203 <br />from ground Level to 10 ft. below expected water <br />level. 1,100 ft. a 6.43 c.y./l.f. = 7,073 c.y. <br />Subtotal (A): 59,199 <br />B. EARTHWORK - HIGHWALL REDUCTION <br />Task No.~ Task Description ~ Cost (E) <br />________I__________________________________________________I__.._________ <br />Inc Luded in Tasks 2 and 4. <br />C. EARTHWORK - WASTE PILE COVER PLACEMENT <br />Task No.~ Task Description <br />N/A <br />Subtotal (B): <br />Cost (5) <br />I____________ <br />Subtotal (C): <br />