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Map 5 shows the soils mapped within the permit area, and Table 2.04.9-1 <br />• shows the mapping units found in the study area and the soil series classifica- <br /> tions. Mapping unit descriptions for each unit within the area follow the <br />table. <br />The following soil mapping unit description is consistent with Soil <br />Conservation Service terminology. Soil depth is defined as the depth to which <br />plant roots can easily penetrate, with shallow soils having a rooting depth of <br />20 inches or less, moderately deep soils with a rooting depth of 40 inches or <br />less, and deep soils with a rooting depth of greater than 40 inches. Permea- <br />bility is based on texturally estimated flow rates, under saturated conditions, <br />of the most limiting soil layer within 60 inches. Capability classes reflect <br />the suitability of the soil for crop production, with Groups I through IY being <br />suitable, as explained in Section 2.04.3. <br />• Routt loam, 3 to 25 percent slopes, 2VD. This is a deep, well-drained soil <br />occurring on gently to steeply sloping valleys, swales and ridgetops. Vegeta- <br />tion is similar to the Mountain Shrub 1 type (Section 2.04.10) with oakbrush, <br />snowberry, serviceberry and scattered clumps of aspen., Capability class is VIe. <br />This soil unit is commonly a dark colored loam surface at least 24 inches thick <br />underlain by a heavy clay loam subsoil which extends to 60 inches or more. <br />Permeability is moderately slow to slow, and the water-holding capacity is high. <br />The surface layer will serve as a good source of topsoil, while the subsoil is <br />limited by its high clay content. <br />Routt loam, 25 to 65 percent slopes, 2VF. This soil unit occurs on steep <br />and extremely steep hillsides and ridges. Vegetation includes aspen, ser- <br />viceberry, snowberry, and oakbrush. The capability class is VIIe. This soil <br />• has a similar profile as the soil described for 2VD, above. <br />- 110 - (Rev. 5/86) <br />