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SOILS INFORMATION EXHIBIT I <br />The soils for this azea have been mapped and described by the USDA Soil Conservation <br />Service (SCS) in a published soil survey. According to this survey, six mapping units occur on this <br />site: (Un) Uncompahre loam, 0 to 2 percent ; (GeA) Genola clay loam, 2 to 5 percent slopes; (VeA) <br />Vernal clay loam, 0 to 2 percent slopes, (BdA) Billings silty clay, 0 to 2 percent slopes; (Al) <br />Alluvial land; and (Wa) wet alluvial land. The majority of the azea to be disturbed consists of the <br />Uncompahge loam, 0 to 2 percent slopes, and the genola clay loam, 2 to 5 percent slopes. <br />Figure 1 -Soils Map included in Appendix C is a soils map of the azea delineating the <br />mapping units. Descriptions of the mapping units aze given below. <br />(Unl -Uncompahgre Loam. 0 to 2 Percent Slopes <br />Soils of the Uncompahgre series formed in stratified, Calcareous alluvium derived from <br />mixed mineralogy. Soils of this series aze deep, somewhat poorly drained, and moderately course <br />textured to moderately fine textured. The Uncompahgre loam, 0 to 2 percent slopes, occurs on <br />flood planes and low terraces. <br />Typically the surface layer is 6 to 12 inches thick, gray or very dazk gray, friable, and has <br />granular structure. The subsoil is gray or dazk gray, stratified but predominately medium-textured <br />that is mottled with stains and streaks of gray and brown. The substratum, which begins at a depth <br />of 20 - 30 inches below the surface, is light brownish-gray or grayish brown mixed alluvium that is <br />calcareous and stratified but predominately medium textured. It is strongly mottled with streaks of <br />and stains of gray and brown. The depth to bedrock is 60 inches or more. <br />This soil is not highly sustainable to erosion. The organic matter content is moderately high, <br />and the structure is stable . <br />(GeA) Genola C1aXLoam. 2 to 5 Percent Slopes <br />Soils of the billings series aze grassland soils that aze formed on alluvial fans in uniform, <br />Calcazeous, medium textured alluvium derived primarily from sedimentary rock. Soils of this <br />series are deep, well drained, and mainly moderately fine textured. The Genola clay loam, 2 to 5 <br />percent slopes, occurs on the lower end of the alluvial fans. <br />North R-34 Pit 1/07 <br />24 <br />