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SOILS <br />EXHIBIT I <br />SOILS INFORMATION <br />The following information was obtained from site observations <br />and the basic soils and vegetation information found thru the <br />USDA's National Soils information page and the Soil Survey of <br />Huerfano County. The following soils information is made part of <br />this application. Soil units are shown on the USDA map, reproduced <br />on page 29 following this text. The photo map shows the surround- <br />ing vegetation features and soil types. This site lies along a <br />east /west trending terrace deposit of gravel south of the Huerfano <br />River. There are 3 soils types found on the mine site, underling <br />the soils is a layer of overburden varying from 4 to 60 inches deep <br />and a layer of gravelly sand that is 12 to 15 feet thick. <br />The 17 - Fort Collins, 1 to 3% slopes soil series covers approxi- <br />mately 15.4 acres or 580 of the mine area. The general soils <br />description indicates that this soil is deep, well drained soil on <br />gently sloping and undulating uplands. The upper most horizon is a <br />0 to 4 inches deep grayish -brown loam, to dark brown fine grained <br />soil usable as topsoil. Underlaying this top most horizon is an <br />additional 3 to 5 foot layer of overburden material suitable for <br />use as backfill material or root zone material. Underlying the <br />topsoil /overburden is a 10 to 15 foot lens of clean gravely sand. <br />Under this level is a dirty clayey gravel sand that is unsuitable <br />for our needs. <br />The 62 - Otero sandy loam, 1 to 9% slopes soil series covers approx- <br />imately 3.0 acres or 11.20 of the mine area. The general soils <br />description indicates that this soil is deep, somewhat excessively <br />drained soil on dune like relief. The upper most horizon is a 0 to <br />7 inches deep light brownish -grey sandy loam and is a non - sticky, <br />non - plastic and mildly alkali soil usable as topsoil. Underlaying <br />this top -most horizon is an additional 3 to 5 foot layer of sandy <br />loam overburden material interbedded with calcareous layers. Much <br />of the northern part of this soil lies within the area previously <br />mined. <br />The 77 - Schamber- Midway complex, 3 to 25% slopes soil series covers <br />approximately 8.1 acres or 310 of the mine area. The general soils <br />description indicates that this soil is deep, and excessively <br />drained. The upper most horizon is 0 to 5 inches of deep brown <br />gravelly loamy sand. Underlaying this top most horizon is an <br />additional 2 to 5 foot layer of very gravely sand. We believe this <br />material is the same type that underlies the Fort Collins soils. <br />The northern end of this soil is within the old mine area. <br />27 <br />