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NONTECHNICAL SOILS DESLRIF,.ON REPORT weldrge Map ~ Soil name arxf description Symbol C - Clima [e is the major hazard. Growing season may be very short; there is a shortage of rainfall or both. Rp ~ Persayo silty clay loam, 12 to 40 percent slopes This wit is poorly suited for row crops due to slope. This unit is best suited to a permanent cover crop. Because of the slope, sprinkler or drip irrigation is asst suitable for the less sloping areas, Irrigation water needs to be applied at a rate that insures optimum production vithout increasing deep percolation, runoff, and erosion. This unit consists chiefly of exposed Mancos shale with areas of thin silty clay loam soils over Mancos shale. Commonly pebbles and cobbles, as colluvium or slope wash, from adjoining terrace remnants are strewn on the surface. The surface layer is silty clay 4 inches thick. The upper 7 inches of the underlying material are silty clay, and the lower part to a depth of 19 inches is silty clay. Gypsun crystals are conmon just above the fractured underlying shale. Permeability of this soil material is slow. Available water capacity is very low. Runoff is rapid, end hazard of water erosion is high. Capability Subclass 7C; nonirrigated Capability classification is the grouping of soils to show, in a general way, their suitability for most kinds of farming. It is a practical classification based on limitations of the soils, the risk of damage when they are used, and the way they respond to treatment. The soils ere classified according to degree and kind of permanent Limitation, but without consideration of major and generally expensive lardforming that would change the slope, depth, or other characteristics of the soils; without consideration of possible unlikely major reclamation projects.