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Tegre Corporation <br /> Job No. 3124JS057 <br /> The laboratory test results were used in the development of the recommendations contained <br /> in this report. <br /> 3.3 Analyses and Report <br /> Analyses were performed and this report was prepared for the exclusive purpose of <br /> providing geotechnical engineering information and discussion. The scope of services for <br /> this project does not include, either specifically or by implication, any environmental <br /> assessment of the site or identification of contaminated or hazardous materials or <br /> conditions. If the owner is concerned about the potential for such contamination, other <br /> studies should be undertaken. We are available to discuss the scope of such studies with <br /> you. <br /> This geotechnical engineering report includes a description of the project, a discussion of <br /> the field and laboratory testing programs, a discussion of the subsurface conditions, and <br /> design recommendations as required to satisfy the purpose previously described. <br /> 4.0 SITE CONDITIONS <br /> 4.1 Site Description <br /> The project site is located west of County Road 213 on a mesa overlooking the Animas River <br /> valley (see photographs in Figure 5). The sides of the mesa slope down sharply, with the top <br /> of the mesa on the order of 200 to 300 feet higher in elevation than Animas River valley to <br /> the east. The proposed gravel pit area is generally relatively flat, and slopes down from the <br /> northwest towards the southeast, with approximately 200 feet of elevation differential <br /> across the site. Contour lines depicting the site topography are provided on the attached <br /> Site Topography Map (Figure 4). Cobbles and boulders with a clayey sand and gravel matrix <br /> underlain by sandstone bedrock are exposed along the slopes (See photographs in Figures 6 <br /> and 7). <br /> The majority of the site is typically vegetated with mature pinion and oak trees. There are <br /> two large meadows near the central portion of the site that are vegetated with grass, <br /> weeds, and sagebrush. <br /> 4.2 Area Geology <br /> The Soil Survey of La Plata County, Colorado, published by the United States Department of <br /> Agriculture, Soil Conservation Service indicates that the site soils belong to the Ustic <br /> 3 G <br />