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map unit symbols and component soil series names as well as soil salvage <br /> depths. Typical pedon sample locations and strategically placed <br /> observation site locations are shown on Exhibit 9-5. <br /> SOIL SAMPLING AND PROFILE DESCRIPTION <br /> Samples from at least one profile for each soil map unit mapped on the <br /> Nucla Mine Scraper Pit study area were collected for laboratory analysis <br /> in accordance with parameters and analytical procedures for topsoil <br /> analyses. See Table 9-4-1 for a description of these parameters and <br /> procedures. Sample site locations were selected to most accurately <br /> represent the sampled soil pedon and to provide for adequate sample site <br /> distribution across the projected disturbance areas. Transition zones <br /> between map units, road edges, fence rows, or previously disturbed areas <br /> were avoided: Representative profiles were selected on the basis of <br /> medial characteristics for physical and chemical soil characteristics , <br /> parent material , landscape position, and vegetation. The major soil <br /> horizons (A, B, if present, C, RT, RS, and S) were separately described, <br /> sampled, and analyzed. Portions of paralithic material (Cr) , if <br /> present, were also described, sampled, and analyzed for characterization <br /> purposes and possible subsequent use as topsoil , if needed. <br /> Surface and subsoil horizons (A, B, RT, and RS horizons) were sampled to <br /> represent no greater than about 6 inches of soil material per sample. <br /> In the substratum (C horizon) , natural horizons (C1 , C2, and so forth) , <br /> and man made horizons (spoil ) were subdivided such that individual <br /> samples did not represent greater than 18 inches of soil or spoil <br /> material . <br /> Physical , and where possible, chemical properties of each horizon within <br /> the sampled profile were described and recorded in the field on SCS <br /> "232" soil description forms. These properties included: <br /> - depth and thickness of horizons <br /> - relative position of soil horizons <br /> - type and nature of horizon boundaries <br /> - color (dry and moist) of horizons <br /> 9-4-9 Revised 11/01/86 <br />