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EXHIBIT I <br />Soils Information <br />According to the Soil Survey of Weld County, Colorado, Southern Part (United States <br />Department of Agriculture, Soil Conservation Service, September 1980), there are five major <br />soil types within the proposed project site: <br />1. Altvan loam, <br />2. Aquolls and Aquants, <br />3. Bankard sandy loam, <br />4. Dacono clay, and <br />5. Ustic Torriorthents <br />The location of these soil types is illustrated on the attached map. <br />Altavan loam <br />The Altavan loam soil type is present within the proposed project site at 0 to 1 percent slopes and <br />1 to 3 percent slopes. They are deep, level and nearly level, well-drained terrace soils formed in <br />alluvium. Permeability and available water capacity aze moderate. For the lower sloping azeas, <br />surface runoff is slow, and the erosion hazazd is low. In areas with steeper slopes, surface runoff <br />is medium, but the erosion hazard is still low. <br />This soil is used almost entirely for imgated crops It is suited to all crops commonly grown in <br />the area, but the high clay content and rapidly permeable substratum slightly restrict some crops. <br />The potential is only fair to good for urban and recreational development. The main limitations <br />aze the shrink swell, potential of the subsoil as it wets and dries and the rapid permeability of the <br />sand and gravel substratum. The soil can produce habitat elements that are highly suitable for <br />openland wildlife including pheasant, cottontail, and mourning dove. Plantings of trees and <br />shrubs commonly grown in the area are generally well suited to this soil. <br />Aquolls and Aquants, eravelly substratum <br />The Aquolls and Aquants are deep, level and neazly level, poorly drained soils formed in <br />alluvium. Located on flood plains along major streams throughout the area, this soil type is <br />found in areas that are subject to flooding. It is also the most dominant soil type within the <br />proposed project site. The water table is at or near the surface eazly in spring and recedes to as <br />deep as 48 inches late in fall. <br />Areas containing these soils are used mainly for rangeland and wildlife habitat. The potential is <br />good for development of wetland wildlife habitat and also as a source of sand and gravel. <br />Wetness and the hazard of flooding are the main limitations in farming and for most other <br />purposes. <br />Platte Valley Operafion <br />OMG /12 Permit Amendment <br />Poge /9 <br />