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will be placed. Topsoil will be placed in one of the topsoil stockpiles located on site. No <br /> vegetation material or topsoil will be placed beneath or in any haul road embankment. <br /> The material for the embankment shall be reasonably free of organic material, coal or coal <br /> blossom, frozen materials, wet or peat material, natural soils containing organic matter or <br /> any other material considered unsuitable for use in embankment construction. <br /> In the placement of embankment for a road, materials will be spread in layers <br /> approximately 12 inches deep, and such lifts made uniformly over long stretches and for <br /> the full width of the embankment. Each lift will be moistened or dried to a uniform <br /> moisture content suitable for compaction. Hauling equipment will be routed both ways <br /> over the fill and routing varied sufficiently to achieve uniform compaction. Compaction <br /> will be carried to the edge of the fills so that the final slopes are firm. <br /> Where the embankment is placed against the existing slopes,the slopes will be benched <br /> and scarified down to a firm dense base as the new fill is being placed. Material so <br /> loosened will be mixed with the new fill and the resultant mix blended firmly into the <br /> slope. <br /> When rock or rocky material is used for embankment, placement shall be in layers not <br /> exceeding the maximum size of the rock present, and in no case shall lifts exceed 30 <br /> inches in depth. Rock layers shall be compacted by routing the spreading equipment and <br /> loaded hauling equipment over the entire width of the fill until compaction is obtained. <br /> One culvert will be placed at the end of the Quarry Access Road along the natural drainage <br /> system. This will help transfer water under the road and minimize erosion. A rock wall <br /> will be placed at the inlet. The cross culvert will be designed to extend one foot beyond <br /> the travel surface and have a diameter of 42 inches. <br /> (h) Water <br /> Water used in the mining operation will be for occasional watering of the roadways, in <br /> which case the water will be imported and spread by truck and for coolant on diamond <br /> saws. Sawing water will be contained and reused. Water will be purchased from a <br /> company or municipality located along the Eagle River. During dry times water <br /> consumption could be up to 15,000 gallons per day which equates to utilizing five 3,000 <br /> gallon water trucks per day for dust suppression according to needs. <br /> (i) Groundwater& Surface Water <br /> Groundwater will not be encountered in this operation. The Brown Quarry site has two <br /> natural drainages on the east and west portions of the quarry. Benches will be designed to <br /> have a slight upward slope towards the center of the pit so water that flows into the pits <br /> will be directed either east or west towards the natural drainages instead of flowing over <br /> the steep south hill side. This will help prevent erosion during the operation. Anchored <br /> straw bales or other sediment trapping mechanisms will be installed below the two natural <br /> drainages so run-off from the quarry is filtered prior to flowing to the ephemeral channel <br /> below. <br /> Additionally a rock check dam will be constructed in the ephemeral channel below and <br />