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i • <br /> pipe will be placed in the lowest portal before backfilling to allow drainage from the quarry and not allow a buildup <br /> of water pressure that might blow out the backfill. <br /> (2) Assume four days of work for a large track mounted backhoe at$200 per hour and $600 for a sediment control <br /> pond liner. <br /> (3) Assume five foot steel or iron fencing with pickets placed on spacing of 4 inches and pointed tops designed to <br /> discourage climbers, similar to that placed by the Inactive Mine Program (IMP) in the mid-1980s. Fencing should be <br /> placed so that at no time may the public be subject to rock falls from above the quarry entries. The total length of <br /> fencing is estimated at 200 feet. The cost is estimated at$30 per lineal foot including installation labor and <br /> mobilization. This estimate is based on the lower- to mid-range quote from four fence contractors. A$59 estimate <br /> was received from Standard Fence of Denver, a $45 estimate was received from Elcar Fence of Denver, a $30 <br /> estimate was received from Split Rail Fence of Denver, and a low bid of$26 was received from Green Mountain <br /> Ornamental Iron in Lakewood. <br /> i <br /> (4) Assume 8 hours plowing with small tractor at$80 per hour including labor, consumables, and mobilization. <br /> (5 Assume 6 inches of topsoil over 113 acre or approximately 270 cubic yards of topsoil. Topsoil to be hauled to <br /> the site from Carbondale, 35 miles away. Quotes were solicited from a number of haulage contractors. The average <br /> was $25 per yard delivered to the site all inclusive. <br /> (6) Assume 8 hours spreading with a small loader/spreader at$80 per hour including labor, consumables, and <br /> mobilization. <br /> (7) Assume 3 hours seed drilling at$60 per hour and 1400 pounds of mulch applied at a rate of$500 per acre <br /> including labor, consumables, and mobilization. <br /> (8) Assume 60 tree seedlings in 4 groupings at a rate of$15 per tree and 50 shrubs seedlings at a rate of$15 per <br /> shrub including labor, consumables, and mobilization. <br /> Maximum disturbance of the land is anticipated at the end of the mine life when the <br /> marble waste piles have reached their maximum size. However,the amount of land to be <br /> revegetated is limited to a portion of the access roads on the surface of the waste piles. The total <br /> area to be revegetated should not exceed 1/3 acre, even at the time of maximum disturbance. <br /> No building demolition will be required. Existing equipment, such as the fuel tank <br /> and generator trailer will have sufficient scrap value to easily cover the cost of removal should <br /> Sierra fail to do so upon completion of mining. <br /> 23 <br />