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NTUCSON SOUTH PROPOSED GRAVEL MINE STABILITY ANALYSIS <br /> TETRA TECH SLOPE STABILITY ANALYSIS - WEST SIDE TUCSON STREET <br /> Color Name Model Unit Cohesion' Phi' Piezometdc <br /> Weight 080 (•) Line <br /> (Pct) <br /> ■ Claystone Bedrock Mohr-Coulomb 134 100 28 1 <br /> (peak strength) <br /> ❑ Mud Lens Mohr-Coulomb 126 50 28 1 <br /> ■ Overburden Mohr-Coulomb 126 50 28 1 <br /> ❑ Sand and Gravel Mohr-Coulomb 137 0 35 1 <br /> ■ Slurry Wall Mohr-Coulomb 122 0 0 1 <br /> . Weathered Claystone Mohr-Coulomb 134 0 14 1 <br /> Bedrock(residual ROW/Utilities <br /> strength) <br /> �13ft <br /> 4,977 N 35 ft --- <br /> 4,967 0 <br /> 1.68 1A15ft0.�20 ft-►j 500 PSF applied live load <br /> 4,957 <br /> 4,947 <br /> 4,937 <br /> 0 4,927 - <br /> 2 <br /> 4,917 <br /> 4,907 <br /> ITT M <br /> 4,897 <br /> 4,887 -J <br /> -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 <br /> Distance (ft) <br /> Figure A-1 - Static Analysis with Low Phreatic Surface <br />