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GEOTECHNICAL STABILITY EXHIBIT <br />There are no buildings or structures outside the permit area which could be atfertetl by the <br />operation. The 2H:1 V slopes aze comparable to the local topography. There are no signs of <br />failure for this angle of slope within the surrounding areas. The gravel zone has a good mix of <br />fines and gravel sires and has been fairly well compacted over time. The natural gravel material <br />has some cohesion. 'I'bis results in slope stability parameters of cohesion and internal angle of <br />friction of high values. When this is combined with a relatively mild slope of 2H:1 V, it is expected <br />that the safety factor for the short slopes will be above 1.5. I, Greg Lewicki, P.E., with over 20 <br />years of experience in mine slope safety analysis in Colorado; state that this is true. <br />Cugnini 12/03 48 <br />