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EXHIBIT I <br /> SOILS <br /> SOILS INFORMATION <br /> The amendment area lies east of the existing mine and <br /> contains one new soil not described when the 2013 conversion was <br /> done. The additional information for that soil is added to this <br /> Exhibit and it has been updated as needed. <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 soils information is made part of <br /> this application. Soil units are shown on the USDA map, repro- <br /> duced on page 28 following this text . The photo map shows the <br /> surrounding vegetation features and soil types . This site lies <br /> along a east/west trending terrace deposit of gravel south of the <br /> Huerfano River. There are 3 soils types found on the mine site, <br /> underling the soils is a layer of overburden varying from 4 to 60 <br /> inches deep and a layer of gravelly sand that is 12 to 15 feet <br /> thick. <br /> The 17 - Fort Collins, 1 to 3% slopes soil series covers approxi- <br /> mately 26. 5 acres or 55 . 7% of the mine area. The general soils <br /> description indicates that this soil is deep, well drained soil <br /> on gently sloping and undulating uplands . The upper most horizon <br /> is a 0 to 4 inches deep grayish-brown loam, to dark brown fine <br /> grained soil usable as topsoil. Underlaying this top most <br /> horizon is an additional 3 to 5 foot layer of overburden material <br /> suitable for use as backfill material or root zone material. <br /> Underlying the topsoil/overburden is a 10 to 15 foot lens of <br /> clean gravely sand. Under this level is a dirty clayey gravel <br /> sand that is unsuitable for our needs . <br /> The 62 - Otero sandy loam, 1 to 9% slopes soil series covers <br /> approximately 4 . 4 acres or 9. 3% of the mine area. The general <br /> soils description indicates that this soil is deep, somewhat <br /> excessively drained soil on dune like relief. The upper most <br /> horizon is a 0 to 7 inches deep light brownish-grey sandy loam <br /> and is a non-sticky, non-plastic and mildly alkali soil usable as <br /> topsoil . Underlaying this top-most horizon is an additional 3 to <br /> 5 foot layer of sandy loam overburden material interbedded with <br /> calcareous layers . Portions of this soil lies within the area <br /> previously mined so there is little topsoil present . <br /> The 77 - Schamber-Midway complex, 3 to 25% slopes soil series <br /> covers approximately 15 . 3 acres or 32 . 1% of the mine area. The <br /> W5G- Hribar Pit Amendment 24 December 2020 <br />