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MINING PLAN <br />Water Resources. As anticipated in [he current plan, [he wash water pond will remain a[ [he end of [he <br />operation and will have slopes of 3:1 from 5 fee[ above and 10 feet below the water line; 2:1 elsewhere. <br />MINING PLANS <br />STEP 1: Topsoil Salvage and Stockpiling <br />Topsoil salvage and stockpiling will occur on all land to be mined, including [he soil covering <br />currently reclaimed land [ha[ will be redisturbed to expand the mining operation. Based upon the soil type <br />in [his area, soil salvage should generally occur [o a depth of 6 to I S inches. In shallow basins and highly <br />ephemeral drainages, more soil maybe encountered with possible soil salvage to a depth of as much as 24 <br />inches. Stripping of soil will occur in small blocks as new land is needed for mining the sand. This not <br />only avoids disturbing more land than is actually needed at any one time, but also helps limit the amount <br />of stockpiling [hat needs [o be done. As described in the reclamation plan, whenever a parcel of land has <br />been completed with mining and the final topography created, if soil is to be stripped from a new parcel at <br />more or less [he same time, that soil will preferentially be placed on the newly graded land. This approach <br />will help maximize the success of reclamation. In general, stockpiling soil damages the soil and tends to <br />retard revegetation. Thus, reclaiming with newly stripped soil is preferred to stockpiling soil for later use. <br />However, this approach can only be used when the timing of new reclamation coincides with the stripping <br />of new soil. Otherwise, stockpiled soil must be used. <br />When topsoil is stockpiled for a period longer than one growing season, it will be seeded with the <br />following mixture. Protection of salvaged soil is a requirement of [he law. This seed mixture is <br />compatible with [he final revegetation mix and will pre-inoculate the soil with seed. Although seeding <br />topsoil stockpiles is important, utilizing ahaul-back approach as described above is much preferred. <br />Pueblo East -Mixture for Use on Topsoil Stockpiles - (broadcast seeding) <br />S ecies Variet /bs/acre PLS <br />Intermediate Wheatgrass -------- 8.0 <br />Alfa Ifa ------- 2.0 <br /> TOTALS= 10.00 <br />Miller Gravel Pit Amendment (2007) Exhibit D Page 3 of 5 <br />