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<br />iii <br />Aggregate Industries – Morrison Quarry GEI Consultants, Inc. <br />AM-07 Geotechnical Stability Exhibit November 2020 <br /> <br /> <br />List of Photos <br />Photo 1-1. Photo showing the active South Quarry (left arrow) and planned West Quarry (right <br />arrow) at Aggregate Industries Morrison Quarry. <br />Photo 1-2. Profile of the South Quarry. <br />Photo 2-1. Outcrop of Sillimanitic gneiss. <br />Photo 2-2. Mafic dike as observed in the Central Quarry <br />Photo 2-3. Granitic gneiss as observed in a boulder at ground surface in West Quarry, showing <br />gneissic banding and a foliation joint. <br />Photo 7-1. South Quarry highwall showing localized slope failures. <br />Photo 7-2. Close up of localized bench failures observed in the South Quarry highwall. <br />Photo 8-1. Photo that shows plan view of northern portion of South Quarry, with circled localized <br />kinematic failures that are interpreted to have formed on adversely oriented foliations. <br />List of Tables <br />Table 3-1 Summary of Recent and Historical Drilling Programs <br />Table 4-1 2017 Subsurface Exploration: Direct Shear Test Results <br />Table 4-2 2018 Subsurface Exploration: Direct Shear Test Results <br />Table 4-3 2018 Subsurface Exploration: Unconfined Compressive Strength Results <br />Table 5-1 Summary of Recommended Hoek-Brown Material Inputs <br />Table 5-2 Summary of Recommended Hoek-Brown Material Inputs for Sillimanitic Gneiss <br />Table 5-3 Input parameters for Q-system rock mass characterization <br />Table 5-4 Hoek-Brown Criterion Values <br />Table 7-1 Summarized Results of Kinematic Evaluation of the South Quarry <br />Table 7-2 Summarized Results of Kinematic Evaluation of the West Quarry <br />Table 7-3 Slope Stability Analysis Results: South Quarry Global Stability <br />Table 7-4 Slope Stability Analyses Results: South Quarry Local Stability <br />Table 7-5 Slope Stability Analyses Results: West Quarry <br /> <br />List of Figures <br />Figure 1: Index Map <br />Figure 2: Regional Geology Map <br />Figure 3: Geologic Map: Distribution of Sillimanitic Gneiss (1 of 2) <br />Figure 4: Geologic Map: Distribution of Sillimanitic Gneiss (2 of 2) <br />Figure 5: Borehole Map <br />Figure 6: South and West Quarry Maximum Highwall Plan <br />Figure 7: South Quarry Maximum Section A-A’ <br />Figure 8: South and West Quarry Section B-B’ <br />Figure 9: South and West Quarry Section C-C’