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APPENDIX A <br />FIELD INVESTIGATION <br />The field investigation for the project was conducted in <br />November, 1980. 'Delve test holes were drilled at the locations shown <br />on Fig. 3 in order to explore the subsurface conditions. The <br />locations of the test borings were determined by reference to <br />topographic features tY representatives of Ford Bacon s Davis Utah, <br />Inc. and Chen and Associates, Inc. Elevations were determined from a <br />topographic survey provided. <br />The test holes acre advanced through the overburden soils and <br />underlying bedrock with 4-ind~ diameter crontinuous flight augers. <br />'best holes were logged on a continuous basis by representatives of <br />Chen and Associates, Inc. <br />Sartg~les of the subsurface materials were taken with 2-inch and <br />1-3/8 inch I.D. spoon samplers. The samplers were driven into the <br />various strata with blows from a 140~ound hammer falling 30 inches. <br />This test is similar to the standard penetration test described by <br />ASZi+I Method D-1586. Penetration resistance values, when properly <br />evaluated, provide an indication of the relative density or <br />consistency of the soils. Depths at which the samples were taken aril <br />' the penetration resistance values are shown on the bogs of Exploratory <br />Holes, Figs. A-1 through A-3. <br />Measurements were made in the test holes to determine the <br />presence of ground water. Measurements were made by lowering a <br />weighted plumb line into the open hole shortly after the oanpletion of <br /> <br />