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June 2014 1402712 001 TM01 RevO <br /> Table 1 <br /> Strength Parameters Utilized for Static Stability Analysis <br /> Total Unit Failure Esf) <br /> ilure Envelope <br /> Weight Envelope efinition <br /> Soil Type (pcf) Type Notes <br /> Native Materials <br /> Mintum Formation 119 Mohr-Coulomb T'=dtan(31°) This failure envelope was determined from the strength results of a staged undrained <br /> triaxial test with pore pressure measurements. No cohesion was included for <br /> conservatism. <br /> LincolnP_orphyry 117 Bi-Linear T'=dtan(50°)for a'<7200 This failure envelope was determined from the residual strength results of a series of <br /> Mohr Coulomb T'=Q'tan(33°)+4200 for large scale direct shear tests. <br /> a'>7200 <br /> GlacialTill 123 Bi-Linear T'=dtan(44°)for a'<7200 This failure envelope was determined from the residual strength results of a series of <br /> Mohr Coulomb T'=dtan(30°)+2688 for large scale direct shear tests. <br /> 0'>7200 <br /> Waste Rock Materials <br /> Waste Rock 120 Power Function IT'=3.18ec 16 This failure envelope was determined from the residual strength results of a series of <br /> large scale direct shear tests. This envelope lies between the average and low <br /> lenvelopes developed by Les(1971). <br /> Tailin s Materials <br /> Tailings Materials 100 Mohr-Coulomb IT'=dtan(33°) This failure envelope was determined from the residual strength results of a staged <br /> undrained triaxial test with pore pressure measurements. No cohesion was included for <br /> conservatism. <br /> t_ <br /> F Golder <br /> 1114\1402712V DOW122W01 TM01 Re411402712 001 TM01 R94 CH—Moly TBL 1-2.x1s,%Design Strengths Static-1 9'.ASsociates <br />