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because it has the least amount of overburden and is where gravel was historically mined. <br />Mining Area 1 will become the processing area for the entire mine life. The crushing /screening, <br />and washing operations will be located in this area. <br />Prior to mining, topsoil and overburden will be stockpiled separately. In the case that the <br />combined thickness of topsoil and overburden is less than one foot the combination will be <br />stripped in one lift and placed in the topsoil pile. when practical, the topsoil and overburden will <br />be placed directly on areas ready for reclamation without being placed in a stockpile. The <br />stockpiles will be located in Mining Area 1. Mining will proceed in order from areas 1 to 6 in the <br />mining areas. If permission to reroute the BLM access road is granted in a short period of time, <br />Mining Area 6 could be mined in between Mining Area 1 and Mining Area 2. The mining slopes <br />on the outside edges of the mining areas will be mined at a 3H:1V slope which will not require <br />backfill prior to topsoil placement. <br />The topsoil to be stored within Mining Area 1 will come from undisturbed areas within Mining <br />Areas 1,2 and 3. All other topsoil will be directly placed in areas ready for reclamation. The <br />amount of land that is currently undisturbed within Mining Areas 1, 2 and 3 is 30 acres. This is <br />less than the total acreage since previous operators did not salvage topsoil. The approximate <br />volume of topsoil is 30 acres x 0 -5 inches of topsoil (2.5 inch expected average) = 10,000 CY. <br />When topsoil is stockpiled, the stockpiles will be seeded within a year of being placed. Seeding <br />will take place during times of higher seasonal precipitation. <br />Stormwater collection ditches will be placed on the northern most portion of the mining area to <br />ensure that a 100 -yr 24 -hr event is contained on site. See Map G for the locations of these <br />ditches. <br />Waste fines will be produced at this site in the production of washed aggregates. Approximately <br />10% of the material that is washed will become waste fines. The waste fines will be salvaged as <br />a subsoil substitute to be used in reclamation. When the wash ponds are cleaned, the waste fines <br />will be stockpiled and stabilized within Mining Area 1 or placed in areas that are ready for <br />Craig Ranch Pit, rev. Aug 2011 D -5 <br />