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TUCSON SOUTH PROPOSED GRAVEL MINE STABILITY ANALYSIS <br /> TETRA TECH SLOPE STABILITY ANALYSIS - SOUTH PLATTE RIVER <br /> (pcf) (psf) (I <br /> 171 Claystone Bedrock Mohr-Coulomb 134 100 28 <br /> (peak strength) <br /> ■ Fill Mohr-Coulomb 126 25 26 <br /> 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 N- 44 ft N <br /> Claystone Bedrock South Platte River <br /> (residual strength) 1.46 f 4—24 ft 0114-20 ft-►i <br /> 4,962 <br /> 4,957 ------------------- <br /> 4,952 <br /> 4,947 <br /> 4,942 <br /> 4,937 <br /> 4,932 <br /> 4,927 <br /> 4,922 <br /> 2 <br /> 4,917 <br /> 4,912 <br /> 4,907 <br /> 4,902 <br /> 4,897 <br /> 4,892 <br /> 4,887 <br /> -130 -110 -90 -70 -50 -30 -10 10 30 50 70 90 110 130 150 170 <br /> Distance (ft) <br /> Figure C-2 - Pseudostatic Analysis <br /> Horizontal Acceleration Coefficient:0.067g <br />