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Exhibit !-Soils <br />Available Topsoil within Worthing Pit and the Expansion Area <br />Topsail in the Expansion Area North is minimal due to historic sand and gravel mining activities. <br />Most topsoil in the Expansion Area North was previously stripped and no longer exists on the <br />site. Any remaining salvageable topsoil and subsoil at the Expansion Area will be stockpiled and <br />reused for site revegetation after mining is completed. Salvageable topsoil and subsoil will be <br />relocated to the existing topsoil storage area on the Worthing Pit property. Sand and gravel <br />excavation will start only after topsoil salvage is completed. <br />Approximately 35,000 cubic yards of topsoil is stored within the stockpiles at the Worthing Pit. <br />The stockpiled sails include a mixture of Dacoma soil, wet alluvial land, and sandy alluvial land. <br />Not all this stockpiled topsoil will be required for reclamation of the existing permitted mine <br />because the ponds will not require revegetation except for the shorelines. Excess topsoil from <br />Worthing Pit may be used for revegetation at the Expansion Area North. <br />Suitability of Topsoil for Establishment and Maintenance of Plant Growth <br />The top 9 to 10 inches of the Dacona loam soils is considered to be good topsoil and suitable for <br />plant growth with a good revegetation potential (USDA 1974). Terrace escarpments are rated <br />poor for use as topsoil and sandy alluvial land is too variable for suitability to be estimated but <br />will support sparse cover of grasses and shrubs (USDA 1974). Soils classified as wet alluvial and <br />sandy alluvial lands are generally rated as poor for use as topsoil and have variable textures. <br />However, some wet alluvial soils are suitable for establishment of grasses (USDA 1974). The soil <br />samples will be tested and analyzed for suitability for establishment and maintenance of plant <br />growth at the Soil Testing Laboratory, Colorado State University. Fertilizer, mulch, or other soil <br />augmentation will be used as needed according to the soil test results. <br />REFERENCES <br />U.S. Department of Agriculture, Natural Resources Conservation Service (MRCS), Status of Soil <br />Survey Digitizing Database (SSURGO) 2003. Adams County Area, Parts of Adams and Denver <br />Counties, Colorado. <br />U.S. Department of Agriculture, Soil Conservation Service 1974. Soil Survey of Adams County, <br />Colorado. Prepared in cooperation with Colorado Agricultural Experiment Station, issued <br />October 1974. <br />1898-Frei 112 Exhibits_(4.20.05).doc I-3 <br />