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The surface layers are fine sandy looms about 37 inches thick. The substratum <br />• is a fine sandy loam extending to 60 inches or more. The unit consistently <br />occurs under aspen. This soil was sampled in several locations. It is an excellent <br />source of topsoil to an average depth of 3 feet in both phases. The lower <br />limit of useful topsoil is discernible by the occurrence of coarse fragments <br />and pale color. <br />This soil is related and similar to the Splitro and Winevada series, and is the <br />deepest member of this catena. The Al horizon of the Coutis soil is typically <br />somewhat higher in organic matter. <br />Permeability is moderate. Effective rooting depth is 60 inches or more. Available <br />water capacity is moderate. Surface runoff is slow, erosion hazard is high <br />from wind and medium from water. <br />• <br />53D -Winevada fine sandy loam, 3 to 25 percent slopes. <br />This is a ~ moderately deep, well rained soil on steep and very steep mountain <br />sideslopes at elevations of 6,900 to 8,400 feet. It formed in material weathered <br />from sandstone. Included in this unit are Coutis fine sandy loam. and some <br />small areas of rock outcrop. <br />This soil consists essentially of a deep A horizon over fractured sandstone. <br />The fine sandy loam to loam surface layer varies from between 20 to 40 inches <br />thick. This soil is related to the Splitro, which is shallower, and the Coutis, <br />which is deeper. In the areas where this soil is mapped, sagebrush is indicative <br />of the deeper Winevada and the mountain brush is indicative of the Splitro. <br />The Coutis occurs under aspen. <br /> <br />This soil is an excellent source of topsoil. It can be stripped all the way to <br />ii.z-ia <br />