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Limited Geological Evaluation <br /> Exploratory Coring,Rose Red Granite Quarry <br /> Lyons,Colorado <br /> The test holes penetrated about 8 to 18 feet of overburden materials before encountered <br /> relatively competent bedrock which extended to the depths explored. Groundwater was <br /> not encountered at the time of drilling at the depths explored. Groundwater levels can <br /> be expected to fluctuate, however, in response to annual and longer-term cycles of <br /> precipitation, irrigation, surface drainage, land use, and the development of transient, <br /> perched water conditions. <br /> The overburden materials generally consisted of colluvium, grus, and weathered granite <br /> rock that was generally highly fractured, relatively hard, and generally of a similar <br /> composition to the relatively competent underlying rock. The `granite' rock encountered <br /> generally appeared to be quartz monzonite based on visual observation of the <br /> composition of the samples. <br /> The percent recover of the rock generally ranged between 88 and 100 percent. The <br /> Rock Quality Designation (RQD) of the cored material typically ranged between 88 and <br /> 100 percent. Lower RQDs were encountered in Test Hole 1where an RQD of 72 was <br /> calculated for Run 6 of Test Hole 1 (41 to 46 feet below grade) and an RQD of 75 was <br /> calculated for Run 5 (36 to 41 feet below grade). A summary of the average percent <br /> recovery and RQD of the rock encountered for each test hole is presented below. <br /> Additionally, the percent recovery and RQD for individual runs is presented after that. <br /> AVERAGE PERCENT RECOVERY AND RQD <br /> Test Hole Percent Recovery RQD <br /> 1 98 86 <br /> 2 99 96 <br /> 3 99 94 <br /> Job No. 17-3043 GROUND Engineering Consultants,Inc. Page 4 <br />