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2008 PH 7042 1654341.6 3082119.5 300.0 90 2 Upper Lower <br /> 3-3 0-220 208-300 <br /> 2008 PH 7277 1653245.9 3082137.9 400.0 90 1 0 320 <br /> 3-4 <br /> Tetra Tech 2011 Ex loration <br /> TT-01 7345 1653185.8 3081729.9 690.0 90 1 Upper Lower <br /> 0-260 500-650 <br /> 2017 Exploration <br /> MQ-1-17 572.0 90 4 <br /> MQ-2-17 487.0 90 4 <br /> MQ-3-17 250.0 90 4 <br /> MQ-4-17 500.5 90 4 <br /> 1.Weathering depths are based on January 2012 topography. <br /> 2.Weathering depths are based on topography at time of drilling. <br /> 3.Weathering extends the entire length of the boring. <br /> 4.Weathering profiles not provided by Al. <br /> Boring MQ-1-17 was advanced to a depth of 572 feet. The boring encountered granitic and <br /> biotitic gneiss with some pegmatite intrusions. Samples from MQ-1-17 were submitted to <br /> Advanced Terra Testing (ATT) for direct shear testing and test results are discussed in <br /> Section 3.2 and summarized in Table 2. <br /> Boring MQ-2-17 was advanced to a depth of 487 feet. The boring encountered granitic and <br /> biotitic gneiss with some pegmatite intrusions. Samples from MQ-2-17 were submitted to <br /> Advanced Terra Testing (ATT) for direct shear testing and test results are discussed in <br /> Section 3.2 and summarized in Table 2. <br /> Boring MQ-3-17 was advanced to a depth of 250 feet. The boring encountered granitic <br /> gneiss with some pegmatite intrusions. Samples from MQ-3-17 were submitted to Advanced <br /> Terra Testing (ATT) for direct shear testing and test results are discussed in Section 3.2 and <br /> summarized in Table 2. <br /> Boring MQ-4-17 was advanced to a depth of 500.5 feet. The boring encountered granitic and <br /> biotitic gneiss with some pegmatite intrusions. Inspections of samples submitted to ATT for <br /> testing indicated that some of the rock cores obtained were sillimanitic gneiss, which was not <br /> recorded on the field log. Test results are summarized in Table 2. <br /> 2.3 Annual Report Investigations <br /> RMR(Bieniawski, 1976) have been documented for Morrison Quarry each year through <br /> Annual Report mapping of areas exposed during mining operations. Developing RMR for <br /> highwalls at Morrison Quarry involves measuring rock features including joint orientation, <br /> foliation orientation, structural features, and unusual rock features observed at exposed <br /> locations in the South Quarry (GEI, 2013-2016). New areas affected by mining each year <br /> were mapped to characterize rock joint and foliation features, and other factors affecting rock <br /> stability including persistent intrusions, shear zones, faults, or failure surfaces. Orientations <br /> were collected using a Brunton compass and recorded using the right-hand rule. All <br /> Aggregate Industries Morrison Quarry GEI Consultants, Inc. <br /> South Quarry Highwall Design Technical Revision 7 August 2017 <br />