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June 2014 1402712 001 TMO1 RevO <br /> Table 2 <br /> Strength Parameters Utilized for Pseudo-Static Stability Analysis <br /> Total Unit Failure Failure Envelope <br /> Weight Envelope Definition <br /> Soil Type I(Pcf) Type I(Psf) Notes <br /> Native Materials <br /> Minturn Formation 119 Mohr-Coulomb T'=dtan(24') This failure envelope was determined from the strength results of a staged consolidated <br /> undrained triaxial test with pore pressure measurements. No cohesion was included for <br /> conservatism. Values were reduced by 20%for the seismic condition. <br /> Lincoln Porphyry 117 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(28°)+3360 for large scale direct shear tests with the values reduced by 20%. <br /> d>7200 <br /> Glacial Till 123 Bi-Linear T'=dtan(38°)for a'<7200 This failure envelope was determined from the residual strength results of a series of <br /> Mohr Coulomb T'=a'tan(25°)+2150 for large scale direct shear tests with the values reduced by 20%. <br /> a'>7200 <br /> Waste Rock Materials <br /> Waste Rock 120 Power Function T'=2.54d°86 This failure envelope was determined from the residual strength results of a series of <br /> large scale direct shear tests. <br /> Tailin s Materials <br /> Tailings Materials 100 Mohr-Coulomb T=crtan(18°) This failure envelope was determined from the residual strength results of a consolidated <br /> undrained triaxial test with pore pressure measurements. A total stress approach was <br /> utilized forth seismic condition. <br /> o Golder <br /> L91M1402712D1 0 0101 2 2=1 TM01 RevM1402712 001 TM01 RevO CIi ,Moly TBL 1-2,,Iw Design Strengths Seismic.2 < Associates <br />