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EXHIBIT I (Cont'd) <br />the area is moderately affected and the remaining 20 percent <br />is somewhat affected. None of the soil even approaches the <br />quality of the worst areas in the Wann sandy loam or the Heldt <br />clay loam. <br />One other aspect of this soil that makes it very poor for <br /> <br />salvage is a high degree of gleization. This phenomenon is <br />usually found in cold, tundra soils at high elevations or lati- <br />tudes. Furthermore, glei soils usually are not saline. <br />The Halaquepts, however, presents an interesting and unusual <br />combination of saline soil and locally intense gleization. <br />The glei character is caused by excessive moisture, poor aera- <br />tion andreduction of iron compounds to form a structureless, <br />highly compact, very sticky and even slippery layer at the base <br />of the solum. The glei layer maintains a semi-subirrigated <br />condition in the upper layers of the soil allowing salt and <br />alkali to transport by capillary action from lower layers to <br />the surface where, upon evaporation, it precipitates into a <br />white crust on the surface of the soil and stems of plants. <br />It should be apparent at this point that the Halaquepts <br />is a soil to be avoided and spoiled with other waste materials <br />in a fashion that will avoid any contamination of other soils. <br />Arvada loam, 1 to 6 percent slopes (map unit X33BC) - This <br />soil is located along the south boundary of the site and is not <br />nearly as extensive on this site as the SCS preliminary survey <br />shows. This is all for the better because this soil is only <br />a little better than the Halaquepts. Although it is well-drained <br />- 33- <br />