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<br />. `1'he Mowrtain Shrub vegetation type tends to a:cur on soils of <br />i:apping w[it Xh9C~-F (Lazar-ktuck ouu:mp comply, 11 to 65 percent <br />slopes) which tLrve px•rrrrarily a northern exposui•r: and h"~appinb Unit 1{Ei-(,U <br />(1`,'rtt luam, :~ to 12 percent elopes). 1'ht~ soils of the Lazear•-ldock <br />complex (Lazear and rrunur inclusions) are shallow, well drained, and <br />medium textured. 1'ne soils' surface layers arc; brown stony loamy to <br />light yellowish brown loamy to a depth of approxiu~tely 9 inches. The <br />underlying matex•ial is very pale brown loam that overlies sandstone <br />bedrock between 15 and 20 i[[ches. These soils occur on rrnderately steep <br />to steep upland mesas. <br />The soils of the Witt series are deep, well dx•ained, and <br />mc~c3ium textured to moderately fine textured. The soils' surface layers <br />are dark brown loar,is to a depth of approximately 7 inches. 1'he <br />• w,derlying materials are reddish brown clay lo~'uns to loamy to a depth of <br />approxircxitely :;y inches. 1'he substratum is a yellowish red loam tlxat <br />extends to EO inches ox•[rore. These soils occur on gently sloping to <br />slopin[; upland and mesa tops. <br />The Soil Conservation Service in the Rocky Foothills range <br />site description corresponding to the Lazear-Rock complex ~rupping unit <br />indicates this site has an optimum ground cover of 25 to 30 pexnent. An <br />open stand of Pinyon and Juniper with a patch understory of shrubs and <br />l;xasses is typical of the site; however, the kind and amount of <br />vegetation does vary with differences in slope, exposure, and soil <br />depth. 1'he don[iuance by Gambel Oak of the vegetation of the Northern <br />- 4 - <br />