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Permeability is moderate. The available water capacity is high. Effective rootinu depth is 60 <br />inches or more. Surface runoff is medium, and the erosion hazard is medium from wind and <br />water. <br />Most of this mapping unit is native range and used for grazing. Present and potential <br />productivity of this soil is fair. <br />33D - Pinelli Loam. 3 to U Percent Slopes <br />This is a deep, well drained soil that occurs at the north edge of the permit area. A portion of <br />the railroad loadout loop was constructed on an area of this soil series. No additional <br />disturbances are anticipated in areas of this soil series; therefore, no detailed chemical or <br />physical data has been collected. The soil developed in local reworked alluvium and is found <br />on upland benches and in swells. The average annual precipitation ranges from 12 to 15 <br />inches, the average annual soil temperature is 42°F to 45°F, and the frost-Free season is 75 to <br />95 days. <br />Included with this soil in mapping are few small areas that are 40 to 60 inches over soft shale <br />and small areas of Forelle and Evanston sails on north slopes or slightly steeper areas. <br />Typically the surface layer is a brown loam about 6 inches thick. The subsoil is a yellowish <br />brown heavy clay loam about: 17 inches thick and is calcareous in the lower par[. The <br />substratum is; a light yellowish brown clay loam and is calcareous. <br />• Permeability is slow. The available water capacity is high. Effective rooting depth is 60 <br />inches or more. Surface: runoff is moderate, and the erosion hazard is moderate from wind <br />and water. <br />Most of this mapping unit is cultivated and used for non-irrigated smolt grains. Some of the <br />area is native range and is used for grazing. Present and potential productivity of this soil is <br />fair. <br />i O1 -Torriorthents -Rock Outcrop, Complex <br />This strongly sloping to very steep complex is on terrace and escarpment faces and valley <br />sideslopes throughout the permit area. Soils are extremely variable in this series. Much of the <br />area has parent material to the surface and is not useful for reclamation purposes. Useable <br />solids are found in isolated pockets throughout this series. Because of the variability of the <br />soils in this series, no detailed chemical or physical data has been collected. The average <br />annual precipitation ranges from 13 to 16 inches, the average annual soil temperature is 42°F <br />to 47°F, and the frost=free season is 75 to 95 days. The Torriorthents make up about 50 <br />• <br />2.04.9-7 <br />