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Source of Reclamation Material,Roadfill,and Topsoil—Weld County,Colorado,Northern Part <br /> The surface layer of most soils is generally preferred for topsoil because of its <br /> organic matter content. Organic matter greatly increases the absorption and <br /> retention of moisture and nutrients for plant growth. <br /> Information in this table is intended for land use planning,for evaluating land use <br /> alternatives, and for planning site investigations prior to design and construction. <br /> The information, however, has limitations. For example, estimates and other data <br /> generally apply only to that part of the soil between the surface and a depth of 5 <br /> to 7 feet. Because of the map scale, small areas of different soils may be <br /> included within the mapped areas of a specific soil. <br /> The information is not site specific and does not eliminate the need for onsite <br /> investigation of the soils or for testing and analysis by personnel experienced in <br /> the design and construction of engineering works. <br /> Government ordinances and regulations that restrict certain land uses or impose <br /> specific design criteria were not considered in preparing the information in this <br /> table. Local ordinances and regulations should be considered in planning, in site <br /> selection, and in design. <br /> Report—Source of Reclamation Material, Roadfill, and Topsoil <br /> [Onsite investigation may be needed to validate the interpretations in this table <br /> and to confirm the identity of the soil on a given site.The numbers in the value <br /> columns range from 0.00 to 0.99.The smaller the value, the greater the <br /> limitation] <br /> Source of Reclamation Material,Roadfill,and Topsoil-Weld County,Colorado,Northern Part <br /> Map symbol and soil Pct.of Potential as a source of Potential as a source of Potential as a source of <br /> name map reclamation material roadfill topsoil <br /> unit <br /> Rating class and Value Rating class and Value Rating class and Value <br /> limiting features limiting features limiting features <br /> 1—Altvan fine sandy <br /> loam,0 to 6 percent <br /> slopes <br /> 85 Fair Good Fair <br /> j Low content of 0.13 Hard to reclaim(rock 0.68 <br /> j organic matter fragments) <br /> Exchange capacity 0.94 <br /> ------- ------------- <br /> Rock fragments 0.99 <br /> 5—Ascalon sandy <br /> I <br /> i <br /> loam,5 to 9 percent <br /> slopes j <br /> Ascalon 85 Fair - Good Good <br /> Low content of ( 0.02 <br /> organic matter <br /> USDA Natural Resources Web Soil Survey 9/24/2019 <br /> Conservation Service National Cooperative Soil Survey Page 2 of 3 <br />