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The overall rating given for each horizon is the rating for the most limiting <br />• parameter. The soils are rated as good to moor sources of topsoil. Limiting factors <br />in the soils tested were slope, texture, erodibility and coarse fragments. As shown <br />in Table 2.3-4, most of the material in the areas to be disturbed are rated as good <br />to fair in the surface horizon. <br />DEPTHS OF MATERIAL AVAILABLE <br />Table 2.3-4 gives depths of topsoil material available in the portions of the <br />permit area to be disturbed. Depths of suitable topsoil are given by 6 inch intervals <br />by mapping unit (i.e., 0, 6, 12, 30, 36 inches). The soil series, depths of the <br />horizons and their ratings (from Table 2.3-2) are tabulated. The percent of the map <br />unit occupied by each soil type is tabulated from field observations. Recommended <br />depth of suitable material for stripping and the restrictive teature shown on Table <br />2.3-4. <br />2.3.3.2 Estimated Potential Yields <br />• FORAGE <br />A large portion of the study ores is presently used for rangeland (sheep) and <br />wildlife habitat. Potential yields of forage production and capability classes are <br />given in Table 2.3-5. (The land capability classes are defined in Section 2.9.3.1, Lond <br />Use). The area has good potential for supporting adequate torages to return to this <br />land use. Historical forage data is compiled by SCS, Routt County on selected soils. <br />CROPS AND PASTURE <br />There are presently parts of the study area in irrigated hay, dryland wheat or <br />oat production. After harvest, much of the livestock is allowed to feed upon the <br />stubble. Potential yields of crops and pasture are given in Table 2.3-6. Historical <br />data is compiled by SCS, Routt County on selected soils. <br />WOODLAND SITES AND REFORESTATION <br />• Soil materials are rated as to their potential for supporting the growth of <br />2.3-147 <br />