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RULE 2 PERMITS <br />from 16 to 18 inches, the average annual soil temperature is 43°F to 45°F, the mean summer temperature <br />is 56°F to 59°F, and the frost-free season is 75 to 90 days. <br />Included with this soil in mapping are a few small areas of sandstone and shale outcrops, shallow soils <br />over sandstone, and small areas of work soils. <br />The duff layer is decomposed and undecomposed leaves, twigs, and grass. Typically the surface layer is a <br />dark grayish brown loam about 20 inches thick. The subsoil is a light yellowish brown clay loam about 25 <br />inches thick. The substratum is a light yellowish brown clay loam to a depth of 60 inches. <br />Permeability is moderate. The available water capacity is high. Effective rooting depth is 60 inches or <br />more. Surface runoff is rapid, and the erosion hazard is moderate from wind and high from water. <br />Most of this mapping unit is native range and used for grazing. Present and potential productivity of this <br />soil is good. <br />17D - Work Loam, 3 to 12 Percent Slopes <br />This is a deep, well drained soil that is found throughout the permit area. The soil is very useful for <br />reclamation purposes, and its usefulness is limited only by its clay content. Mixing of this soil may prove <br />beneficial, as the heavy, textured horizons will be mixed with lighter textured horizons. The soil <br />developed in interbedded sandstone and shale and is on upland benches and sideslopes. The average <br />annual precipitation ranges from 16 to 18 inches, the average annual soil temperature is 43°F to 46°F, and <br />-the frost-free season is 75 to 95 days. <br />Included with this soil in mapping are a few small areas of Regent, Burnette, and Campspass soils. <br />Typically the surface layer is a grayish brown loam about 7 inches thick. The upper subsoil is a brown <br />heavy clay loam about 22 inches thick. The lower subsoil is a yellowish brown clay loam about 30 inches <br />thick. It is calcareous below about 47 inches. <br />Permeability is moderate. The available water capacity is high. Effective rooting depth is 60 inches or <br />more. Surface runoffs slow, and the erosion hazard is moderate from wind and water. <br />Most of this mapping unit is native range and used for grazing. Present and potential productivity of this <br />soil is good. <br />17E - Work Loam, 12 to 25 Percent Slopes <br />This soil has the same characteristics as the previous soil, except that it is found on steeper slopes. The <br />soil developed in interbedded sandstone and shale and is found on upland benches and sideslopes. The <br />average annual precipitation ranges from 16 to 18 inches, the average annual soil temperature is 43°F to <br />46°F, and the frost-free season is 75 to 95 days. <br />Included with this soil in mapping are a few small areas of Burnette and Regent soils. <br />Typically the surface layer is a grayish brown loam about 7 inches thick. The upper part of the subsoil is a <br />brown heavy clay loam about 22 inches thick. The soil is calcareous below about 47 inches. <br />Permeability is moderate. The available water capacity is high. Effective rooting depth is 60 inches or <br />more. Surface runoff is medium and the erosion hazard is moderate from wind and high from water. <br />Rule 2 Permits 2.04.9-3 Revision Date: 6/23/08 <br />Revision No.: MR-91