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4 - 52 <br />• These data indicate that the elevated levels of salts and SAR are not concentrated in the <br />surface layers at the mine site and that no special handling of the surface layers is necessary. <br />Table 4.4.1 shows ranges of suitability for each parameter. <br />4.4.6 PRESENT AND POTENTIAL USES <br />4.46.1 CROPS AND PASTURELANDS <br />The SCS has made prime farmland determinations and published a map of prime farmlands <br />in Garfield County (USDA -SCS, 1979). There are no prime farmlands mapped by the SCS in <br />the permit area. A written negative determination was requested from the SCS and is contained <br />in Appendix L. None of the soils mapped at the site has potential for crops or pastureland, <br />unless irrigated. <br />There are no cultivated soils in the permit area nor have they been cultivated in the past. <br />4.4.6.2 RANGELANDS <br />The soils of the site area have been used as rangeland in the past. Predicted forage <br />• production for rangeland soils during favorable, normal, and unfavorable years for various sites <br />are given in Table 4.4.3, which is based on generalized SCS data (Soil Interpretation Records). <br />Capability classes for the soils are II, III, IV, or VI. The principal limitations are wetness and <br />erosion. Soils in capability class II have some limitations that reduce the choice of plants or <br />require moderate conservation practices. Soils in capability classes III and IV have severe <br />limitations that make them unsuited to cultivation and limit their use largely to grazing woodland <br />or wildlife. <br />• <br />M~ Volume 1 4-29-96 <br />