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N TUCSON SOUTH PROPOSED GRAVEL MINE STABILITY ANALYSIS <br /> TETRA TECH SLOPE STABILITY ANALYSIS - GAS WELL/FENCE <br /> (Pcf) (Psf) V) <br /> Claystone Bedrock Mohr-Coulomb 134 100 28 <br /> (peak strength) <br /> Fill Mohr-Coulomb 126 25 26 <br /> Mud Lens Mohr-Coulomb 126 50 28 <br /> r`J Overburden Mohr-Coulomb 126 50 28 <br /> Sand and Gravel Mohr-Coulomb 137 0 35 <br /> ■ Slurry Wall Mohr-Coulomb 122 0 0 <br /> ■ Weathered Mohr-Coulomb 134 0 14 <br /> Claystone Bedrock <br /> (residual strength) <br /> Applied Load: 3000 psf <br /> 4,973 Gas Well <br /> 56 ft <br /> Gravel Apron 1.52 <br /> 4,963 IAU-15 ft 10 1-4---20 ft ► <br /> `-' 4,953 <br /> 4,943 <br /> 2 <br /> 4,933 <br /> I <br /> 4,923 <br /> 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 <br /> Distance (ft) <br /> Figure E-2 - Pseudostatic Analysis <br /> Horizontal Acceleration Coefficient: 0.067g <br />