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1 <br /> <br />' SUMMARY <br />Project Location: The project is located at the site of the <br />Red Canyon mine, approximately three miles <br />northwest of Cedaredge, Colorado in Delta County. <br />t Project Description: The project is to consist of a waste disposal <br />area for coarse coal refuse. The proposed <br />' facility is currently designed with slope gradients ranging from <br />3.56:1 to 3.39:1. slope heights exposed at the maximum gradient <br />for the critical sections analyzed range from 87 feet to 138 feet. <br />' Scope of Report: The purpose of this report is to provide the <br />results of an investigation and a computer-assisted <br />limit equilibrium slope stability analysis for the proposed waste <br />' disposal facility. <br />Results of Analyses: The proposed configuration of the waste <br />disposal area was fo~:nd to he stable, having <br />a minimum factor of safety against sliding of 2.402. Further, if <br />desired, it would be possible to increase the maximum gradient of <br />this slope to something on the order of 3:1 and still maintain a <br />minimum factor of safety against sliding of 2.139. This would afford <br />the operator a slight increase in the volume of waste material 4'r.icli <br />may be safely stored in the area. <br />' Additional discussion and more complete recommendations may be found <br />in the body of this report. All recommendations are subject to the <br />' limitations set forth herein. <br /> <br /> <br /> <br /> <br /> <br />1 <br />' 1 <br />