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GEOTECHNICAL STUDY: <br /> Western Technolog i,es Irlc . , was contracted to perform a geotechnical <br /> study of Tailings Pond No. 1 during late summer of 1991 . The study <br /> included site inspection, drilling and sampling of borings on the <br /> site, laboratory testing of subsurface materials and geotechnical <br /> engineering analysis. <br /> The engineering technical analysis consisted of performing site <br /> stability analysis r the site as it exists and after <br /> reconfiguration according to a preliminary plan developed by San <br /> Juan County Mining Venture. The preliminary plan required <br /> modification in the old failure area and these modifications (slope <br /> flattening) have been incorporated into the submitted plan. The <br /> following table lists factors of safety against failure as the pond <br /> exists and as proposed in the reclamation plan with the exception <br /> that the old failure area was reinforced after receipt of this <br /> report to increase stability. <br /> Cross Section Existing Proposed <br /> Static Pseudo-Static Static Pseudo-Static <br /> Old Failure Area 1 . 24 0 . 77 1 . 57 1 . 12 <br /> South of Old <br /> Failure Area 1 . 19 0 . 95 1 .63 1 . 11 <br /> Area of Borings <br /> 9 and 10 1 . 42 1 . 14 1 . 74 1 . 34 <br /> The proposed reconfigured slopes will increase the factor of safety <br /> against failure to minimum acceptable levels. <br />