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`. <br />RECLAMATION COSTS <br />Henderson Mine <br />March 1987 <br />Many affected areas are being re vegetated but are not considered totally <br />reclaimed. Estimated costs and concomitant financial warranty for such areas <br />are adjusted downward as reclamation occurs and upward to cover additional <br />disturbed areas. Because of the continuously changing acreage and status of <br />affected land, the Board stipulated that reclamation costs be updated every <br />two years in conjunction with submittal of the annual report and map. We <br />have refined our acreage estimates, our methods, and our costs. The esti- <br />mated costs of reclaiming all anticipated disturbances through 1988 is $4.412 <br />million. <br />A. Site Type Cost Calculations: <br />1. Mine site (computed for 15 acres), mostly comprised of a fragmented <br />rock growth medium: <br />Man-days Labor/Equip. Material Total <br />Site preparation <br />Spread and haul SS* <br />Spread and haul WC* <br />Stockpiling SS and WC <br />Seed <br />p OS fertilizer <br />Max in SS and WC <br />4,500 trees <br />600 shrubs <br />Maintenance fert., <br />one application <br />5 $3,750 $ 0 $3,750 <br />20 2,080 5,400 7,480 <br />30 3,120 7,800 10,920 <br />6 624 0 624 <br />2 208 1,410 1,618 <br />4 416 780 1,196 <br />6 624 0 624 <br />45 4,680 2,250 6,930 <br />6 624 390 1,014 <br />3 315 180 _ 495 <br /> Total $:4,651 <br />$ 2,310 <br />peer acre <br />*SS = sewage sludge <br />WC = wood chips <br /> <br />