PERMFILE123597 - Laserfiche WebLink

Home Browse Search

• 2.04.9 In favorable years mature Gambel oaks produce acorns, which are used by Merriam turkey. Map Unit 4 Map unit 4 is the Persayo silty clay loam, 12 to 35 percent slopes. This is a shallow, well drained soil that overlies Mancos shale at a depth of 10 to 20 inches. It formed in material weathered from shale and is on uplands. Typically the surface layer is light yellowish brown silty clay loam about 4 inches thick. The underlying material is light brownish gray silty clay loam. Mancos shale is at a depth of about 15 inches. Field investigation of this map unit shows the soil has virtually no profile. The thickness of the A horizon averaged only 1.5". The soil is shallow with a combined A and B horizon depth that ranges from 18" to 20". Mancos shale is at an average depth of about 19 inches. Laboratory tests show this soil is • a silty clay and dark grey in color. Based on the soil's physical, fertility and salinity characteristics presented in Exhibit 7, the A and B horizon are marginally suitable for salvage. Considering the soil limited areal extent, it will be salvaged if it is within the area to be disturbed. Permeability is moderately slow, and available water capacity is low. Effective rooting depth is about 10 to 20 inches. Surface runoff is rapid. The hazard of erosion from wind is moderate and from water is high. The native vegetation on this soil consists mainly of mat saltbush, Gardner saltbush, fourwing saltbush, shadscale, and adapted grasses. All areas of this soil are used for grazing of livestock and wildlife and for recreational purposes. Because of steepness of slope, shallow soil depth, and low available water capacity, this soil is unsuited to crops. Grasses can be planted where the slope permits seedbed preparation and drilling of seed, but only fair results . can be expected. If established, Russian wildrye, tall wheatgrass, pubescent PR-06 2.04 -48 - 8/01 /it PPRoyE/> i ~/ 902