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• percent. Rock fragment content is 35 to 70 percent in the particle-size control section and consists of mainly of <br />stones and cobbles, but some pebble size fragments are present. The mean annual soil temperature is 54 to 59 <br />degrees F. <br />The A horizon has hue of 7.5YR, value 5 or 6 dry, 4 or 5 moist, and chroma of 3 or 4. <br />The Bt horizon has hue of 7.SYR, value 5 or 8, dry, 4 or 5 moist, and chroma of 4. Texture is very gravelly Gay loam, <br />very stony sandy clay loam, or very stony Gay loam. <br />The BCk horizon has hue of 10YR or 7.5YR, value of 6, 7, or 8 dry, 4, 5, or 6 moist, and chroma of 3 or 4. It is <br />strongly calcareous or very strongly calcareous. Texture is very stony sandy clay loam, very gravelly day loam, or <br />very stony Gay loam. In some pedons, gravelly sandy loam, very stony clay loam, Gay loam, very gravelly loam, very <br />stony day loam, and very stony loam strata are present. <br />COMPETING SERIES: These are the Hoot, Mirkwood (T), Theon (T), and Wauceba series. All these soils receive <br />most of their annual precipitation during the winter months and receive little or no precipitation after the summer <br />solstice. Hoot soils have loam, silt loam, clay loam, or silty day loam textures in the particle-size control section. <br />They are neutral to mildly alkaline in the argillic horizon. Theon soils are dominated by pebble sized fragments in <br />the subsoil and are formed in granitic parent material. They have a paralithic contact above the lithic contact. <br />Waucaba soils are dominated by pebble and cobble sized fragments in the argillic horizon and lack a BCk horizon. <br />• GEOGRAPHIC SETTING: Valleycity soils occur on the marginal hogbacks and ridges of the Salt Valley antiGine, <br />Burco Canyon Formation. Slopes are medium and long in length and range from 8 to 25 percent. The soils are <br />formed in colluvium and residuum and mostly from calcareous sandstones and shale. Mean annual temperature <br />is 52 to 57 degrees F and average annual precipitation is 5 to 8 inches. The freeze-free period is 150 to 170 days. <br />GEOGRAPHICALLY ASSOCIATED SOILS: These are the Farb, Monue, and Chipeta soils. Farb soils have a <br />loamy parGGe-size conVOl section and lack a B horizon. Monue soils lack bedrock above a depth of 40 inches. <br />Chipeta soils are less than 20 inches to paralithic contact. <br />DRAINAGE AND PEREMABILfTY: Valleycity soils are well drained, medium runoff; and moderate permeability. <br />USE AND VEGETATION: These soils are used for rangeland; wildl'rfe habitat and for recreation. Potential <br />vegetation includes galleta, shadscele, Indian ricegrass, blackbrush, rabbitbrush, and pricklypear. DISTRIBUTION <br />AND EXTENT: Southeastern Utah. The soils of this series are small in extent, 2,500 acres and are confined <br />principally to the marginal hogbacks of the Salt Valley antiGine. <br />MLRA OFFICE RESPONSIBLE: Lakewood, Colorado <br />SERIES ESTABLISHED: Grand County Utah, 1982. <br />r1 <br />LJ <br />(Revised March 2006) Attachment 2.04.9-3-35 <br />