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<br /> <br /> <br />2. The soil in the upper area of the product stockpiles is classified <br />by the Soil Conservation Service as Niwot series (Nh). This extended <br />easterly through the entire production area and laid on top of the South <br />Saint Vrain alluvium and quartz monzonite deposit. <br />This soil has a variable texture at the surface, The soil ranges <br />from sandy clay loam to light clay loam to loam. The erosion hazard is <br />slight except for back cutting near channels. The thickness of this soil <br />ranges from 10" - 60", A soil test in the clay loam portion of this soil <br />yielded a Ph of 7,4. The salinity was 2.3 Millimhos per cm. The shrink <br />swell potential is moderate. The available water capacity is approximately <br />0.16 to 0.18 inches, Slope average is 1%, <br />• 3. The surface materials shown on map 177-2 as Rock faces are classified <br />by the Soil Conservation Service as Rock Outcrop, In the case of this <br />permit they are almost 100% comprised of the quartz monzonite of the <br />quarry area. Rock faces shown outside the mining area are of the same <br />material. The mining plan narrative addresses the geology of this <br />material, These rock faces do not sustain any vegetation and are purely <br />of aesthetic or commercial value. The slope of this rock runs from 70"/ <br />to near verticle. <br />The capability of the colluvial soil is extracted from the Soil <br />Conservation Service "Soil Survey of Boulder County Area" as follows: <br />"This unit consists of shallow to deep, well-drained soils of <br />the Boller, Juget, Nederland, Peyton, Sixmile, and Valmont series, and <br />of Terrace escarpments and colluvial land. These soils have a very cobbly <br />sandy loam, very stony loamy sand, very gravelly loamy sand, stony fine <br />