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and residuum derived from shale. Included in this unit are small areas of Cochetopa <br />• look and Binco silty clay loam. <br />The surface layer is a soft, very friable, weak fine granular, noncalcareous <br />loam about 16 inches thick. This soil shows a weak A2 at the bottom of the <br />Al. It is only about 2 inches thick and is not significant. This is underlain <br />by a 17 inch B2 which is a heavy silty clay loam. <br />The Ioamy A horizon is an excellent topsoil source down to the heavy textured <br />B2. The B2 was not split into subhorizons as this was not considered significant. <br />The C horizon is a massive, hard clay loam/clay. <br />Permeability is very slow. Effective rooting depth is 60 inches or more. Available <br />water capacity is high. Surface runoff is medium, Water erosion hazard is <br />• high. <br />XSD -Winevada-Splitro complex, 3 to 25 percent slopes. <br />X8F -Winevada-Splitro complex, 25 to 65 percent slopes. <br />These moderately deep and shallow soils are on gently sloping to moderately <br />steep mountain sideslopes at elevations of 6,900 to 8,400 feet. The Winevada <br />soils occupy lower sideslopes and concave areas. The Splitro soils occupy upper <br />sideslopes and ridgecrests. This unit was mapped primarily under the mountain <br />brush vegetation type and contains about 70% Splitro and 30% Winevada, with <br />very small areas of Coutis soil. The Splitro is a lithic soils with depth to <br />sandstone less than 20 inches. The characteristics of the A horizons of both <br />soils are the same except for depth. The surface soil is a weak fine granular <br />very friable, ,noncalcareous loam over fractured sandstone. In the Splitro com- <br />ponent sandstone may be very near the surface. <br />IZ.2-Z1 <br />