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• Range in Characteristics: Depth to base of argillic ranges <br />from 12 to 32 inches. The A and B horizons range in texture from <br />sandy loam to loams. High sodium content in the subsoil ranges <br />from 12 to 18 inches. <br />Setting: The Spicerton series are deep soils that have devel- <br />oped in alluvial sediment from the Coalmont Formation. In the <br />permit area, this soil is located on low terraces and a portion of <br />the North Fork of Bolton Draw. Vegetation is sparse and consists <br />principally of alkali sagebrush and perennial forbs. <br />Type Location: 2500 feet west and 350 feet north of <br />corner of Sections 10 and 11. <br />Unnamed Alluvium, 0 to 2 percent slopes (8) <br />This soil is deep, nearly level and poorly to moderately well <br />drained. The soil found on level bottomlands adjacent to the <br />stream channel of the North Fork of Bolton Draw in a depositional <br />area below upland drainages. <br />The soil has a dark grayish brown silt surface horizon and <br />dark gray and grayish brown silt loam to loam B horizons. The C <br />horizon is a yellowish brown clay loam. <br />The C horizon is probably moist a good portion of the year, <br />however, movement of water by capillary action from the C horizon <br />to the lower B is restricted because of the significant change in <br />texture. <br />Runoff is slow. Surface textures range from silt to silt <br />loams. <br />Typifying pedon, Unnamed alluvium: <br />\J <br />-12- <br />