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EXHIBIT D (Cont'd) <br />Soils and Overburden. There are four types of natural <br />soil on or adjacent to the site. These soils vary in <br />depth from zero to 18 inches. Of the 170.70 acres of <br />affected land, approximately 135.34f acres will become water <br />I area and 3.21f acres will be roads. Thus, 32.151 acres <br />will require revegetation. Sufficient quantities of salvage- <br />I able soil will be available to resoil this 32.15f acres to <br />a depth of 8 to 12 inches (see Exhibit I for more details <br />concerning soils). <br />A large part of the soils on the property are so poor <br />that they must be segregated and spoiled with other waste <br />materials so that the good soils are not contaminated. <br />Estimates of in situ soils are based on the McArdle <br />1 system. High-quality sails are estimated to be 114,457 <br />l yards. A maximum of 37,561 yards will be required to <br />1 resoil the affected land to be revegetated. Thus, excess <br />I soil is estimated to be in the ratio of about 3 to 1. <br />If soils are to be stockpiled without disturbance <br />l for over a year, a protective cover of Western Wheatgrass <br />' will be planted during the first planting season after <br />stockpiling. The deeper material on the site is very gravel- <br />I ly and will be excavated as aggregate source material. <br />-7- <br />