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' ,~ <br />' on the western side of current disturbance graded to 5' on the <br />eastern side. The material is a silty sand with clay and gravel. <br />It is generally pinkish with red, white, black, and light brown <br />rounded to subrounded particles, dense, and slightly moist to <br />dry. The material below the overburden is silty sand, gravel and <br />cobble (pit run) material, that includes some lenses of clay. <br />The existing pit is at a depth of 50' without encountering the <br />sandstones, conglomerates, siltstones or shales of the Burro <br />Canyon Formations. <br />Soils series maps indicate the fine grained surface overburden <br />' soils classify as Callan loam, 3 to 6 percent slopes for the <br />southern-central portion of the area to be mined including the <br />' south-eastern portion of Phase I, southern portion of Phase II, <br />and south-western portion of Phase III. A very small portion of <br />' southern-western Phase I of already disturbed ground classifies <br />as Callan loam, 6 to 12 percent slopes with the same soil <br />' description as the previously mentioned Callan loam. The balance <br />of the property, included in Phase I-V mining, includes the soil <br />classification: Radersburg gravely loam, 6 to 30 percent slopes. <br />The Callan loam, 3 to 6 and 6 to 12 percent slopes, is deep and <br />' well drained on mesa tops and terraces. The soil classification <br />indicates the top 4 inches is loam and from 4 to 60 inches is <br />' clay loam. The clay loam is formed alluvially from sandstone and <br />shale, it's permeability is slow and available water capacity is <br />high. Surface runoff is medium to rapid and the hazard of water <br />' erosion is high to very high. The Radersburgh gravely loam, 6 to <br />30 percent slopes is deep and well drained on ridges, mesas, and <br />' high terraces. It consists of gravely loam 0-7", very cobbly <br />clay loam 7"-15", and extremely cobbly loam 15"-60". This soil <br />' classification formed in glacial till, outwash, and alluvium from <br />igneous rocks. It's permeability is moderately low and available <br />' water capacity is low. Surface runoff is rapid to very rapid, <br />and the hazard of water erosion is high to very high. The origin <br />' of the surficial clay loam on parts of the parcel is interpreted <br />' 7 <br />