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SITE DESCRIPTION EXHIBIT B <br /> SOILS INFORMATION <br /> The following information was obtained from site observa- <br /> tions and the basic soils and vegetation information found thru <br /> the USDA' s National Soils information page and the Soil Survey of <br /> Huerfano County. The following soil information is made part of <br /> this application. Soil units are shown on the USDA map, repro- <br /> duced on page 5 following this text . The photo map shows the <br /> surrounding vegetation features and soil types . This site lies <br /> on a mesa top terrace deposit of gravel that runs east/west in <br /> the northern part of Huerfano County. There are two soils types <br /> found on the mine site . <br /> The 57 - Nunn clay loam, 0 to 3% slopes soil series covers approx- <br /> imately 6 . 9 acres or 69% of the mine area . The general soils <br /> description indicates that the Nunn series consists of very deep, <br /> well drained soils that formed in loess and mixed alluvium. Nunn <br /> soils in this area is on a terrace or alluvial fan on the mesa <br /> top . The upper most horizon is a 0 to 12 inches or an average of <br /> 8 inches of a gravely loam, or brown, fine grained soil usable as <br /> topsoil . Underlying the topsoil is a 25 to 35 foot lens of <br /> gravely sand. The bedrock that underlays the gravel is part of <br /> the Pierre Shale and is described as a predominantly siltstone/ <br /> claystone in excess of 3000 feet deep. The top of this layer will <br /> become the mine floor. <br /> The 84 - Ustic Torriorthents - Rock outcrop complex, 4 to 40% slopes <br /> soil series covers approximately 3 . 17 acres or 31% of the mine <br /> area . The general soil description indicates that this soil is <br /> in extremely rough, deeply eroded areas along the mesa front . <br /> They are shallow and moderately deep and well drained, soils due <br /> to the rock associated with them and the steep face they lay on. <br /> On the mine area there is little or no salvageable topsoil or <br /> growth medium material on the face . <br /> AUSTIN & BETSY CLENNIN- BECKER PIT May 7, 2020 <br /> 4 <br />