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MINING PLAN <br />in the final revegetation also growing on the soil stockpiles. This will build an additional seed bank in <br />the soil that can add to the success of the final revegetation. <br />Species Pounds/acre Pure Live Seed <br />Intermediate Wheatgrass 10 <br />Pubescent Wheatgrass 10 <br />Sand Bluestem or Sand Dropseed 10 (if Bluestem) OR 0.25 (if Dropseed) <br />Blue Grama 1 <br />TOTAL 31 (if Bluestem) OR 21.25 (if Dropseed) <br /> (BROADCAST SEEDING, ONLY) <br />OVERBURDENREMOVAL - Based on what was shown in drill logs, the distinction <br />between soil and overburden is expected to be rather vague in the area that was once reservoir. Further <br />to the west, in the existing mining area, there is usually a good distinction between soil and <br />overburden. There overburden is generally a very fine, slightly darker sand than the sand deposit <br />itself, but not as dark as the topsoils. Sometimes the overburden is of sufficient quality that it can be <br />considered marketable sand, but often that is not the case. <br />In the reservoir area it is likely that this original overburden has been heavily infiltrated with <br />fines from the soil above. Those fines were carried to greater depth by seepage from the reservoir into <br />the underlying sands. Although partial sealing of the reservoir bottom probably occun-ed fairly <br />quickly, some infiltration still occurred and that undoubtedly carried some fines into deeper layers of <br />the unconsolidated sand. <br />Unless there is a similar distinction between soil and overburden in the reservoir area, it is <br />likely that the overburden will be removed along with the soil. If infiltration of fines actually occurred <br />it is likely that what would normally be overburden and of limited value as a growth medium will <br />contain more fines and organic matter in the area of the reservoir. In that case the overburden itself, <br />when mixed with the overlying soils, would be a suitable growth medium and could be replaced as <br />such. <br />In the event an overburden layer is found that is not suitable as a growth medium (similar to <br />the overburden encountered further to the west) then that will be stockpiled separate from the soil and <br />replaced on the final surface prior to placement of the topsoil. <br />Daniels Sand Pit #2 -Little Johnson Amendment - M-is~s-oo~ Exhibit D Page 5 <br />