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gneiss. Samples from the boring were submitted for laboratory testing including Moisture <br /> Density Relationships, Unconfined Compressive Strength with Young's Modulus, Direct <br /> Shear, and Slake Durability. <br /> 3.1.2 2017 Geotechnica/Explorations <br /> Al performed a subsurface exploration to characterize the bedrock in the South Quarry as <br /> part of a 3D model development for the South Quarry. A total of four(4) boreholes were <br /> advanced using NQ wireline coring methods (identified as MQ-1-17 through MQ-4-17). The <br /> boreholes were advanced to depths of 572 feet, 487 feet, 250 feet, 500.5 feet, respectively. <br /> Borings were located throughout the South Quarry and advanced between April 24, 2017 and <br /> May 9, 2017. <br /> Boring MQ-1-17 was advanced to a depth of 572 feet and encountered granitic and biotitic <br /> gneiss with some pegmatite intrusions and sillimanitic gneiss. Boring MQ-2-17 was <br /> advanced to a depth of 487 feet and encountered granitic and biotitic gneiss with some <br /> pegmatite intrusions. Boring MQ-3-17 was advanced to a depth of 250 feet and encountered <br /> granitic gneiss with some pegmatite intrusions. Boring MQ-4-17 was advanced to a depth of <br /> 500.5 feet and encountered granitic and biotitic gneiss with some pegmatite intrusions. <br /> 3.1.3 2018 Geotechnica/Explorations <br /> Al performed an additional subsurface exploration to characterize the bedrock in the South <br /> and West Quarries, which was performed to develop 3D subsurface models. A total of five <br /> (5) boreholes were advanced using NQ wireline coring methods (identified as M-1-18 <br /> through M-5-18) and were drilled between April 11, 2018 and May 7, 2018. One boring was <br /> located within the South Quarry and the remaining borings were located throughout the West <br /> Quarry. Al provided general drilling oversight and GEI logged the core recovery and strata. <br /> Boring M-1-18 was advanced to a depth of 593.5 feet and encountered granitic, biotitc, and <br /> sillimanitic gneiss with some pegmatite intrusions. Boring M-2-18 was advanced to a depth <br /> of 297 feet inclined at 30' from vertical and encountered granitic and biotite with some <br /> pegmatite intrusions. Boring M-3-18 was advanced to a depth of 380 feet inclined at 15' <br /> from vertical and encountered granitic, biotitc, and sillimanitic gneiss with some pegmatite <br /> intrusions. Boring M-4-18 was advanced to a depth of 270 feet and encountered granitic, <br /> biotitc, and sillimanitic gneiss with some pegmatite intrusions. Boring M-5-18 was advanced <br /> to a depth of 340 feet and encountered granitic, biotitc, and sillimanitic gneiss with some <br /> pegmatite intrusions. <br /> 11 <br /> Aggregate Industries—Morrison Quarry GEI Consultants, Inc. <br /> AM-07 Geotechnical Stability Exhibit November 2020 <br />