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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 far 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 topsail, 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 />?-4-g Revised 11/01/86 <br />