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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />FIELD INVESTIGATIONS <br /> <br />In November 2000, Kumar and Associates, Inc. performed a preliminary <br />geotechnical reconnaissance of the Keeton Dam site. This investigation concluded <br />that the bedrock in the vicinity of the dam would probably be sedimentary. <br /> <br />In 2001 Kumar and Assoc., Inc. performed a surface and subsurface <br />geologic investigation of the Keeton Dam site. The report described the site <br />geology and conditions, and the exploratory program. The program included borings <br />and a seismic refraction survey, focused on the south abutment area for evaluation <br />of depth to and extent of bedrock. Bedrock was discovered at relatively shallow <br />locations, which would provide a relatively erosion resistant spillway control <br />surface. The bedrock would probably require blasting to remove. The on-site <br />sandstone bedrock materials would not meet the Bureau of Reclamation's <br />requirements for hard, durable riprap. <br /> <br />Copies of these reports are included in Appendix A. <br /> <br />21 <br />