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. following soil sample sites (CC -1 through CC6), with complete soil profile descriptions and <br />accompanying soils laboratory data, are located in proposed surface- affected areas <br />located outside the current Seneca II Mine and /or Foidel Creek Mine permit areas. The <br />soil description /sample sites are included with the map units within which they are located. <br />• Map Unit 2VD:Routt -Routt Variant silty clay loam complex, 6 to 20% slopes (CC-4) <br />• Map Unit 10D: Binco clay, 10 to 20% slopes (CC -1) <br />• Map Unit 35E: Aaberq silty clay, 20 to 40% slopes (CC -3) <br />• Map Unit 53F: Winevada sandy loam, 25 to 65% slopes (CC -6) <br />• Map Unit 66C: Skvlick loam, 5 to 10% slopes (CC -5) <br />• Map Unit 66D: Skvlick loam, 10 to 20% slopes (CC -2) <br />• 3.3.1 Map Unit 2VD: Routt -Routt Variant silty clay loam complex, 6 to 20% slopes <br />Routt is an established soil series of small extent mapped in northwestern and north - <br />central Colorado, and is classified as a "Fine, smectitic Pachic Palecryoll ". Diagnostic <br />features for the typical pedon include a mollic epipedon from 0 to 25 inches, and an argillic <br />horizon from 28 to 60 inches. The top of the argillic "Bt" horizon is below 24 inches. The <br />most recent official NRCS soil series description for Routt, dated February 1999, is on file. <br />An evaluation of soil suitability indicates the sampled Routt pedon CC-4 is consistent with <br />the previous Seneca II Mine recommended topsoil salvage depth of 21 inches for Map Unit <br />2VD. The thickness of the mollic epipedon for sample site CC-4 is 25 inches, slightly more <br />than 21 inches but consistent with it. <br />Routt Typical Sample "CC -4" Site and Soil Profile Description: Routt loam was fully <br />described and sampled at one representative site, CC -4, located in a portion of the NE <br />corner of Section 14, T.5N., R.87W. The sample site is in an aspen- covered, gently <br />sloping upland swale- drainage within the potential transportation corridor in the hilly ridge <br />"gap" area between the south end of the Seneca II Mine permit area and the north end of <br />Foidel Creek Mine permit area. Sample site CC-4 has 6% slope, east aspect, vegetation <br />of aspen with an understory of mountain shrub species and mixed grasses; slopewash <br />alluvium over residuum at depth; gently sloping upland swale- drainage; and stable surface <br />U <br />