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Fremont County Area, Colorado The main limitations are the slope and the high content of cobbles. The capability classification is Vlls, nonirrigated. The soil is in the Spruce-Fir woodland site. 14-Bushvalley cobbly loam, 5 to 40 percent slopes. This shallow, well drained soil is on hills, mesas, and mountainsides. It formed in residuum derived from breccia and tuff. The native vegetation is mainly grasses and shrubs. Elevation is 8,000 to 9,200 feet. The average annual precipitation is 15 to 18 inches, the average annual air temperature is 40 to 44 degrees F, and the average frost-free period is 55 to 80 days. The surface layer is typically dark grayish brown cobbly loam about 4 inches thick. The subsoil is very cobbly sandy clay loam about 7 inches thick. Breccia is at a depth of,about 11.inches. The soil is neutral. In some areas the surface layer is very cobbly loam or very stony loam. Included in mapping are areas of soils that are similar to the Bushvalley soil but are moderately deep. These soils are on foot slopes. They make up about 10 percent of the unit. Also included are areas of rock outcrop in the steeper areas and Adderton loam in drainageways. Rock outcrop makes up about 5 percent of the unit. Adderton soils are deep. They make up about 5 percent of the unit. Permeability is moderately slow in the Bushvalley soil. Available water capacity is very low. Effective rooting depth is 7 to 20 inches. Runoff is rapid or very rapid, and the hazard of water erosion is high or very high. This soil is used as rangeland or for wiidlife habitat. The potential plant community is mainly Arizona fescue, mountain muhly, Parry oatgrass, prairie junegrass, and needlegrass. The average annual production of air-dry vegetation is about 700 pounds per acre. If the condition of the range deteriorates, blue grams, true mountainmahogany. Gambel oak, and fringed sagebrush increase. Range seeding is suitable if the range is in poor condition. Mechanical range seeding may be impractical in the steeper areas. Most areas of this soil are poorly suited to homesite development. The main limitations are the slope and the depth to bedrock. Areas that have slopes of less than 15 percent are suited to homesite development if the depth to hard bedrock is more than 20 inches. The capability classification is Vlle, nonirrigated. The soil is in the Shallow Loam #230 range site. iteman cobbly loams. 15 to 50 percent slopes. These soils are on ridges and mountainsides. The native vegetation is mainly grasses 27 and ponderosa pine or bristlecone pine. Elevation is 8,400 to 10,000 feet. The average annual precipitation is 16 to 20 inches, the average annual air temperature is 40 to 44 degrees F, and the average frost-free period is 55 to 75 days. This unit is about 65 percent Bushvalley soil and 20 percent Whiteman soil. The Bushvalley soil is in grassy areas, and the Whiteman soil is in areas that have an overstory of ponderosa pine or bristlecone pine. Included in mapping are areas of Tellura soils on foot slopes and in drainageways. These soils have a surface layer of gravelly clay loam. They are deep. They make up about 10 percent of the unit. Also included are areas of rock outcrop on ridges and the upper part of side slopes. These areas make up about 5 percent of the unit. Also included are some small areas of Larand soils in the steeper areas. These soils are deep. They have a surface layer of very aravelly fine sandy loam. They support an overstory cf bristlecone pine. The Bushvalley soil is shallow and well drained. It formed in residuum derived dominantly from andesite, tuff, breccia, rhyolite, and granite. Slopes range from 15 to 50 percent. The surface layer is typically dark grayish brown cobbly loam about 3 inches thick. The subsoil is very cobbly clay loam about 9 inches thick. Hard tuff is at a depth of about 12 inches. The soil is neutral to a depth of 7 inches and is mildly alkaline below that depth. In some areas the surface layer is very stony loam or very cobbly loam. Permeability is moderately siow in the Bushvalley soil. Available water capacity is very low. Effective rooting depth is 7 to 20 inches. Runoff is rapid or very rapid, and the hazard of water erosion is high or very high. The Whiteman sail is shallow and well drained. It formed in residuum derived dominantly from andesite, tuff, breccia, and rhyolite. Slopes range from 15 to 30 percent. The surface layer is typically dark grayish brown cobbly loam about 2 inches thick. The subsoil is about 4 inches of very gravelly loam over 5 inches of very gravelly sandy clay loam. Tuff is at a depth of about 11 inches. The soil is neutral. Permeability is moderate in the Whiteman soil. Available water capacity is very low. Effective rooting depth is 10 to 20 inches. Runoff is rapid, and the hazard of water erosion is very high. This unit is used as rangeland, for recreation, or for wildlife habitat. The potential plant community on the Bushvalley soil is mainly Arizona fescue, mountain muhly, Parry oatgrass, prairie junegrass, and needlegrass. Many areas also have scattered stands of ponderosa pine or bristlecone pine. The average annual production of air- dry vegetation is about 700 pounds per acre. If the