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1 WESTERN • 400 South Lorena Avenue • <br />TECNNOLOG~ES Farmington, New Mexico 87401 <br />' ~~. (505) 327-4966 • 327-5293 FAX <br />' San Juan County Mining Venture October 2, 1990 <br />Post Office Boa 177 <br />Silverton, Colorado 81433 <br />1 <br />Attention: Mr. Mike Foutz <br />' Regarding: Tailings Pond No. 2 Project No. 3120K114 <br />' Sunnyside Mine Invoice No. 31200129 <br />Silverton, Colorado <br />Our geotechnical engineering report for the Tailings Pond No. 2 <br />is attached. This exploration and report was authorized by Mr. <br />' Mike Foutz of San Juan County Mining Venture Sunnyside Mine, <br />and was performed in general accordance with our proposal <br />number 3120A138 dated May 22, 1990. <br />The results of our geotechnical analysis indicate that the <br />' existing eastern slope of the tailings pond has a minirttum <br />factor of safety against sloped stability. A minimum factor of <br />' safety of 1.54 against slope instability was calculated. for <br />static conditions of the proposed 2:1 slope which will be used <br />' for reclamation purposes. This minimum factor of safety is <br />considered applicable for the reclamation plan. <br /> <br />1 <br /> <br />t <br />1 <br /> <br />We are prepared to review your plans and specifications for <br />consistency with the recommendations, and to provide th.e <br />construction observation and testing recommended. Please call <br />should further consultation be required. <br />Sincerely, <br />WESTERN TECHNOLOGIES INC. <br />Gy ~ / <br />Lawrence E. Cynova, P.E. <br />/mja ~o~.,qO <br />Distribution: Addressee (3) <br />Billing (1) <br />George A. Madrid, P.E:. <br /> <br />