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<br />123 - Rentsac-Piceance complex, 2 to 30 percent slopes. <br />This complex occurs on upland slopes and ridges and developed fro,n sandstone <br />residuum. It is comprised of about 60 percent Rentsac soils and 30 percent <br />Piceance soils. Small areas of Redcreek, Ya:nac and Forelle soils were included <br />in mapping. Redcreek soils are shallow and loamy. Yamac and Forelle soils are <br />deep and morn developed. 'These included soils occupy less than 15 percent of <br />the unit. <br />The Rentsac soil is shallow, skeletal and well-drained. In a typical profile, <br />the surface layer is light yellowish brown loam about 3 inches thick. Tha <br />subsurface layer is very pale brown calcareous very channery loam about 3 inches <br />thick. Tha substratum is very pale brown calcareous very channery clay loam about <br />7 inches thick and is underlain with highly fractured calcareous loamstone at <br />• a depth of 13 inches. <br />The Rentsac soil has moderate permeability and medium runoff. Tha erosion <br />hazard is low to moderate from wind and water. Available ~.vaterholding capacity <br />is moderately low. Effective rooting depth is 10 to 20 inches except for juniper. <br />The Picaance soil is moderately deep and well-drained. In a typical profile, <br />the surface layer is brown fine sandy loam about 4 inches thick. 'fhe upper subsoil <br />is brown light loam about 5 inches thick. 'fhe lower subsoil is light yellowish <br />brown loam about 13 inches thick. The substratum is vary pale brown channery <br />light loam about 8 inches thick and is underlain with hard sandstone at a depth <br />of 30 inches. <br />The Picaance soil has moderate to moderately rapid permeability and slow <br />to medium runoff. fhe erosion hazard is slight to :noderate. Available waterholding <br />capacity is moderately low. Effective rooting depth is 20 to 40 inches. <br />• <br />