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Exhibit D: Mining Plan <br />Revised: May, 2005 <br />Minim Plan <br />This particular mining operation has been properly permitted and operating for <br />some thirty years under what is now termed as a 110 Limited Impact Operation. The <br />project is a sand and gravel mining operation using the method of hydro dredging. The <br />Owners created a small pond using normal excavation techniques and then place upon the <br />pond a floating dredge of sufficient size and capacity to pump the volume of material <br />(sands and gravels) needed to serve the product demands. The dredge floats within the <br />boundaries of the pond, slowly increasing the pond size in terms of area and depth as <br />dredging operations progress. The dredged materials are pumped over a series of screens <br />to size and separate the various materials into the desired gradations. Waste materials are <br />collected off the screens and are allowed to flow back into the pond, behind the dredge. <br />This process slowly refills the pond and the pond location is then made mobile by this <br />process and the finite area of the pond does not change. Mined products are stored on-site <br />in various piles by gradation. This allows the piles to naturally de-water with the return <br />flows draining back into the pond. <br />Given the location of the operation adjacent to the South Platte River, the pond has <br />the potential of being refilled by the river during flood events. Typically, this results in <br />more waste material than in good mining product, but it does prevent silt materials from <br />continuing downstream, so there is some benefit. <br />. There are no direct water diversions, but the Operators maintain and are under the <br />restrictions of a State issued Gravel Well Permit # AD-13082. <br />The mining operation is a part-time operation; that is, it operates only on the <br />demand for materials, typically May to late September. The Company is small, with few <br />employees (only one part-time dredge operator), so it is not feasible to operate year round. <br />The weather also prevents year round operation. The pond and equipment tend to ice over <br />during the winter months. Once materials have been stockpiled and de-watered, they are <br />used on-demand and when the stockpiles are low dredging operations are re-started.