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EXHIBIT I - Soils Information <br />Soil Description <br />Soils at the Geisert gravel pit site are described on Sheet 8 of 43 in the Soil Survey of Weld County, Colorado - <br />Northern Part published in 1981 by the Soil Conservation Service. <br />Surface soils at the Geisert gravel pit site include Argiustolls loam, fine sandy loam, and silt loam (unit 3). These <br />soils are deep, well-drained dark colored soils with variable clay content. The Argiustolls have moderate wind and <br />high water erosion potential. The Argiustolls soils are suitable for rangeland pasture where livestock are managed <br />to prevent overgrazing. <br />The Geisert site may also have originally contained soils of the Avar-Manzanola complex (unit 10). The Avar soils <br />are poorly drained fine sandy loams formed in calcareous alluvium. Wind and water erosion potential is moderate. <br />The Avar-Manzanola soils are suitable for non-irrigated rangeland pasture where livestock are managed to prevent <br />overgrazing. <br />The 1981 soil survey also identifies the areas of Argiustolls loam and Avar-Manzanola complex as poor sources for <br />roadfill material; however, these surficial soils overly the more sandy and gravelly floodplain deposits of the Cache <br />La Poudre River. <br />M:\DAVE B\Geisert Pit\DRMS Permit Amendment\Geisert Amendment Application & Exhibits Revised 4-21-11.docx