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EXHIBIT D MINING PLAN <br /> 1. General Mining Plan <br /> Mine access is via highway 96. The area to be mined is a gravel deposit of roughly 15-20- <br /> foot thickness. Actual mining depth will reach approximately 20-25 feet below the current <br /> ground surface and includes the full depth of the gravel deposit and overlying variably thick <br /> overburden and topsoil. Mining will occur as one phase that advances from the middle of the <br /> current permit area outward north, east and west. <br /> In general,the site will be mined by first excavating approximately 4 inches of topsoil and <br /> underlying overburden. Excavation will occur via front-end loaders, excavators and <br /> bulldozers. <br /> Topsoil and overburden will be stockpiled along the perimeter of the mining area as mining <br /> progresses through the site. As mining progresses forward, stockpiled overburden and topsoil <br /> will be used to reclaim the previous mined areas of the site. Therefore, reclamation will occur <br /> concurrently with mining and will be completed to create a final 3H:1 V slopes. Stockpiles <br /> will be minimal in duration. The maximum active highwall will be—400 feet long and bound <br /> on either side by 3H:1 V slopes. Excavated gravel will be loaded into a portable crusher/screen <br /> plant where various sizes of product will be created and sorted into separate size-dependent <br /> stockpiles. Maximum processing is approximately 5,000 tons per day. The crushing operation <br /> and processed stockpile locations may change during the mine's life as mining proceeds across <br /> the mining area <br /> Normal groundwater levels are known to be greater than 40 feet below the current pit floor. <br /> No water will be encountered in the operation as mining depths will not exceed 25 feet below <br /> the current ground surface. However, in the unlikely event that water is encountered during <br /> mining, excavation will immediately stop, and the area will be backfilled with at least 2 feet of <br /> overburden to cover any exposed water. No pit dewatering will take place as the groundwater <br /> table is below the bottom of the pit elevation. <br />