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M?3040GE • <br />1.0 INTRODUCTION <br /> <br />This report presents the results of the geotechnical <br />engineering study we conducted for the existing portal cut slope at <br />the west portal of the Orchard Valley Mine. The stud was <br />conducted at the request of Mr. earl Koehler, Cyprus Mine. <br />The conclusions, sueaestions and recommendations presented is <br />this report are based on the data gathered during our site and <br />laboratory study and on our experience with similar soil <br />conditions. ':actual data gathered during the field and laboratory <br />work are summarized in Appendix A. <br />1.1 Scope o`_ Services <br />Our services included geotechnical engineering field and <br />laboratory studies, and analysis and report preparation for the <br />proposed site. The scope of our services is outlined below. <br />- The field study consisted of observing the conditions of ar.d <br />sampling the soils exposed or. the surface of the south slope <br />of the west portal area. <br />- The laboratory study included tests of the soil samples <br />obtained during the field study to help assess the strength <br />potential of the soils tested. <br />- This report presents our geotechnical engineering <br />suggestions, considerations and recommendations concerning <br />the theoretical stability of ±he slope. Our stability <br />analysis was for the portion of the slope above the bench. <br />~Cambert anD ~,ssociate,s <br />CONSUL (ING OcOTECN NIC~L ENGINEERS •nD <br />V ~TERILL BESTING <br />