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SOILS i4FOFa1AiIDN <br />subsidiary activities such as roads. This soil is a deep, clay soil, but is well <br />drained. It formed in calcareous alluvium on fans and terraces. No gravel is <br />• found in this soil, but large amounts of lime can occur in the lower levels. The <br />permeability is slow and the effective water holding capacity is high. The native <br />vegetation is primarily alkali sacaton, western wheatgrass, blue grams, and some <br />switchgrass as well as junegrass. With good management this soil can produce <br />excellent forage. The soil has a fairly good revegetation potential. <br />F{Q,DT CLAY LOAM: (Figure 6). This is another bottomland soil which, like the <br />Manzanola clay, tends to be heavy, well drained, and productive when treated <br />properly. Some areas where this soil occurs are cropped for corn, alfalfa, and <br />pasture, but irrigation water must be available to accomplish this. Most areas <br />occupied by this soil are used for rangeland. The soil is very difficult to <br />revegetate and it is vital that livestock be well managed or the revegetation will <br />not work. In some places, pitting techniques can accelerate the revegetation. <br />• This soil will not be involved directly in the mining process and therefore should <br />not present as severe a problem with revegetation. <br />USTIC TO}2RIFLUVENTS: This is a highly varied group of soi15 which occur <br />along major drainageways. The soil can vary from a sandy loam to a clay loam and <br />is usually only about 6 to 18 inches thick. The underlying material can be <br />anything from a heavy clay to sand and even gravel in some places. On this site, <br />the S.C.S. soil survey indicates that it is the loamy type which is present. This <br />soil allows deep rooting, has a moderate to high available water capacity, and a <br />moderate to high erosion hazard. Soil blowing can be a problem. These soils are <br />subject to periodic flooding which explains why the soils cover such a diverse <br />variety of materials: The soil is relatively easy to revegetate. According to <br />the mapping done by the S.C.S. it does not appear likely that this soil occurs on <br />• page 4 of 7 Exhibit I <br />