2023-10-31_REVISION - M1973021 (15)

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Geotechnical Stability Exhibit Engineering Evaluation of Highwall Design for the South Quarry of the Morrison Quarry Table 3- Summary of Historic Direct Shear Testing Boring Depth (ft.) Material Joint Type Normal Friction Cohesion Stress (psi) Angle de (psi) Granitic Natural MQ-1-17 72.5-73.0 Gneiss Fracture 300/600/900 15.9 100.4 Granitic Natural MQ-1-17 173.5-174.2 Pegmatite Fracture 300/600/900 21.8 60.4 Granitic Natural MQ-1-17 336.7-337.5 Gneiss Fracture 300/600/900 14.3 94.6 Granitic Natural MQ-1-17 428.4-429.0 Gneiss Fracture 300/600/900 23.8 95 Granitic Natural MQ-1-17 505.0-506.5 Pegmatite Fracture 300/600/900 26.5 151.5 Granitic Natural MQ-2-17 74.5-75.0 Gneiss Fracture 70/140/280 29.8 0 Granitic Natural MQ-2-17 173.0-173.8 Gneiss Fracture 70/140/280 17.3 24.2 Natural MQ-3-17 81.5-82.5 Talc Gneiss Fracture 70/140/280 47.7 0 Granitic Natural MQ-3-17 161.0-162.5 Gneiss Fracture 70/140/280 34.9 3.5 Granitic MQ-3-17 246.5-248.0 Gneiss Saw Cut 150/300/600 25.2 11.2 MQ-4-17 80.1-80.8 Talc Gneiss Saw Cut 70/140/280 29.1 3.8 Natural MQ-4-17 81.0-81.6 Talc Gneiss Fracture 70/140/280 21 31.8 Natural MQ-4-17 123.0-124.0 Talc Gneiss Fracture 70/140/280 15.3 63.6 Granitic MQ-4-17 169.0-169.8 Gneiss Saw Cut 70/140/280 18.6 20.3 Granitic Natural MQ-4-17 223.5-224.2 Gneiss Fracture 150/300/600 24.6 66.2 Natural M-2-18 56.0-57.0 Biotite Gneiss Fracture 70/140/280 30.8 0 Granitic Natural M-2-18 154.0-155.3 Gneiss Fracture 70/140/280 33.9 8.9 Natural M-3-18 282.0-283.5 Talc Gneiss Fracture 150/300/600 15.9 119.7 Natural M-3-18 362.0-364.0 Talc Gneiss Fracture 150/300/600 25.8 139.6 Granitic Natural M-4-18 173.0-174.0 Gneiss Fracture 70/140/280 21.3 44 Granitic Natural M-4-18 193.0-194.5 Gneiss Fracture 70/140/280 28.1 31.1 Natural M-5-18 129.0-129.5 Talc Gneiss Fracture 70/140/280 19.6 25.4 May 2023 1 11