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INTRODUCTION <br /> This report presents the results of a geotechnical investigation <br /> conducted at the site of the existing #3 tailings pond for the Standard <br /> Metals Corporation Silverton Mill , Silverton, Colorado. The primary purpose <br /> 0 of this investigation and analysis was to determine the stability of the <br /> existing tailings embankment, to make recommendations for adding additional <br /> height to the embankment, and to recommend any corrective action which <br /> needs to be taken for stability of the existing embankment. <br /> Factual data gathered during the field and laboratory work is summarized <br /> in Figures l through 14, and Tables 1 and 2. The results, conclusions <br /> and recommendations discussed below, are based on the data gathered during <br /> the field and laboratory work, analytical analysis of the existing conditions, <br /> and our experience with similar soil conditions. <br /> FIELD PROGRAM <br /> Eleven test holes were drilled by F. M. Fox and Associates, Inc. <br /> ® on 'March 31 through April 4 of 1976. Refer to the Figure 1 for the Test <br /> Hole Locations. The holes were drilled utilizing either a four inch diameter <br /> continuous flight power auger or an eight inch diameter hollow stem continuous <br /> (7� flight power auger. The materials encountered in the test holes were logged <br /> by an engineer of this office on the site during the drilling operations. <br /> The various soil strata encountered during the drilling is shown on the <br /> • Logs of Test .Holes, Figure 2. The soils were sampled utilizing a California <br /> Sampler from which standard penetrations as well as samples for laboratory <br /> analysis were obtained. In addition, thin wall Shelby Tube samples were <br /> extracted for laboratory testing. <br /> -1- <br />