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Most of the Boroll portion is native range and used for grazing. <br />Present and potential productivity is poor. <br />105-Kemmerer-Moverson Siltv Clay_Loams, 20 to 40 Percent Slopes <br />These moderately steep and steep soils are on foothill ridge crests <br />and sideslopes near the center of the permit area. A very small <br />area (less than 1 acre) of this series was disturbed by the access <br />road. No additional activities are planned in areas covered by <br />this soil, therefore detailed chemical and physical data has not <br />been collected for this series. The average annual precipitation is <br />about 13 to 16 inches, the average annual air temperature is about <br />45°F. Kemmer soil makes up about 45 percent of the mapping unit <br />and Moyerson soil about 40 percent. Small areas of a soil similar <br />to Kemmerer soil but is deep, and Pinelli soils make up the other <br />15 percent. <br />Kemmerer soil is a moderately deep, well drained soil. It is <br />formed in weathered residuum from Mancos shale. <br />Typically the surface layer is a light brownish gray silty clay <br />loam about 3 inches thick. The substratum is a light brownish gray <br />silty clay and overlies soft Mancos shale at a depth of 28 inches. <br />Permeability is slow and available water capacity is low. Surface <br />runoff is rapid, and erosion hazard is moderate. <br />• Moyerson soil is a shallow, well drained soil. It is formed in <br />residuum in Mancos shale. <br />Typically the surface layer is a light gray silty clay loam about <br />1 inch thick. The underlying material is a light brownish gray <br />gravelly, silty clay loam and overlies soft Mancos shale at a depth <br />of 17 inches. <br />105-Kemmerer-Moverson Siltv Clay Loams <br />Permeability is slow and available water capacity is low. Surface <br />runoff is rapid and erosion hazard is high. <br />U <br />2.04.9-9 <br />