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TopsoiUFines Stockpile Seed Mix Lbs./acre <br /> <br />•? <br /> <br />Slender Wheatgrass 10.0 <br />Western Wheatgrass 10.0 <br />Thickspike Wheatgrass 10.0 <br />Crested Wheatgrass 3.0 <br />Perennial Rye Grass 3.0 <br />Cicer Milkvetch 1.0 <br />Utah Sweetvetch 1.0 <br />Total 38.0 <br />In order to place 3" of fines over the 11.8 acres, 4759 cy is needed. Therefore, an additional 1260 cY <br />is needed to complete re-topsoiling using the substitute material. Of the 28.7 disturbed acres in the <br />north mine area, 2.8 acres will remain as ponds and 2.8 acres will remain as roads, therefore, only <br />23.1 acres will require the substitute fines. Using a 3" average thickness, this requires 9317 cy. <br />This is the minimum volume that will be stockpiled at either of the two locations (Piles #1 and #4). <br />It is also he volume that will be required to be spread at the end of the mine life. <br />The gravel operation generates approximately 750 cy of fines per 100,000 tons processed. Since the <br />operation will process 130,000 tpy, the fines produced per yeaz is 975 tons. Therefore, over the 15 <br />yeaz life of the gravel operation, it is expected that 14625 tons of fines will be produced, which is <br />more than enough to cover the 23.1 acre azea to be reclaimed with at least 3 inches thickness. The <br />Trust will make every effort to increase this thickness and will salvage and use all fines that can be <br />reasonably obtained from the sediment collection system. <br />Alma Placer 7/03 <br />30 <br />