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FXHIBIT D—Mining Plan <br /> This is an expansion of an existing 27.8 acre open pit mine. To Access the pit from Crook Colorado,take <br /> County Road 81 (paved) 3% miles north to the first stop sign. Turn left and travel 1 mile west on Coo. <br /> Rd 66 to County Road 79, then travel 4%miles north to the pit entrance on the east. <br /> We anticipate the life of this expanded mine to be 10—20 years depending on the amount of material <br /> available and the demand for gravel in the market area. Mining in the expanded area will commence as <br /> early as a permit can be acquired and end upon exhaustion of the material supply. The material will be <br /> used primarily to supply demand for the existing wind generation units and road construction material <br /> for the State of Colorado projects. Additionally the permit will remain active to accommodate any <br /> additional needs for repair and maintenance of the established roads and other markets that may be <br /> revealed later. The pit should be classified as an intermittent pit. It will be utilized as the need occurs. <br /> This site is covered by a gravely deposit designated as the Dix-Eckley Complex(5-25%slope) soil series in <br /> the Soils Conservation report for Logan County This deposit is typically found in northern Logan County <br /> along the gravel breaks of the Peetz Table. This soil series has not unique characteristics but is suitable <br /> for the use when reclamation begins. When mining ends,the area will be graded to the appropriate <br /> slopes. The stockpiled top soil will be re-applies prior to seeding. When reclamation is complete,the <br /> site will be returned to its current use as a dryland pasture. <br /> A mining setback of at least 15 feet will be maintained around the site. All Slopes created will be <br /> excavated at their final stage as mining progresses similar to the surrounding topography. Of the <br /> additional 31.4 acres in the permitted area, approximately 22 acres will be mined and the remaining <br /> area will be used for setbacks,Stockpiles and Access. We also note that approximately 13.6 acres in the <br /> original pit have been mined and revegetated and are pending release from the DRMS. The remaining <br /> 14.2 acres of the existing pit will be undergoing reclamation as soon as extracted material and stockpiles <br /> are removed. This site is a series of gravelly fingers that feed the sand drainage and travel Southeast. <br /> Mining will first be completed within the original 112 permit boundaries then move to areas south into <br /> the proposed new boundary area. Mining efforts will level out the top of ridges creating a flatter area <br /> with gentle slopes flowing north and east. Mining will be done in such a way not to create benches or <br /> impoundments. <br /> The site will be mined in the direction shown on the mining map. There is already an existing road into <br /> the site that has historically been used by the Kokes Ranch. There will be additional internal haul roads <br /> created as mining occurs. The product will enter onto County Road 79 and use existing county roads to <br /> transport to the construction sites. A portion of the site will be used to stockpile topsoil and mined <br /> product until it is needed. <br /> The Material is a gravel cobble deposit suitable for making roads and construction bases. The upper 2-3 <br /> inches of the material will be stockpiled for use in reclamation and placed either in the setbacks around <br /> the mined area or on the floor of the excavated area. If the soil stockpiles remain undisturbed for more <br />