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III IIIIIIIIIIIIIIII <br />sss <br />SOILS <br />~~ EXHIBIT I q~~~(gl <br />The following is a report prepared by Mark A. Heffner <br />of Oikos Environmental Services. <br />Soils of the site are of four types. Two of the units <br />are not of a type that would be useful in revegetation. One <br />of the other two soils is much better and can be salvaged <br />where needed and used beneficially in the reclamation of the <br />site. The fourth soil is marginal; its salvage is not recom- <br />mended unless insufficient amounts of suitable soils are <br />acquired from other areas. Approximately 40-50 percent of the <br />soil on the site is salvageable and about half of that which <br />is salvageable is of good quality. The remainder is salt- <br />' affected, stoney, thin, alkaline, or gleyed, or any combination <br />thereof. <br />The Arvada Loam forms a narrow strip between the road and <br />the agricultural or wetlands. This soil is a silty clay loam <br />about five feet deep with about 14 inches in the surface layer. <br />It is occupied by the Saltbush stands described in Exhibit J. <br />The Arvada Loam tends to be strongly alkaline and rather saline. <br />In this case, it is very strongly alkaline. None of this soil <br />should be salvaged because it would do serious harm to any <br />vegetation program. <br />The Halaquepts soil occurs through most of the area. It <br />is a highly variable soil ranging from an excellent loam to a <br />heavy clay. At about 24 inches, gravel abruptly increases in <br />-26- <br />