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Geotechnical Data Report Bruce Park Dam <br />Bowie Resources, Limited <br />•? April 2001 <br />Section 1 - Introduction <br />1.1 Purpose <br />This report presents the results of geological and geotechnical field investigations and <br />laboratory testing performed for the Bruce Park Dam and Reservoir Project. The purpose of <br />these investigations is to collect data for use in 1) evaluating potential impacts to the dam and <br />reservoir from proposed underground coal mining operations, and 2) evaluating the <br />feasibility of raising the crest elevation of Bruce Park Dam 3 to 6 feet to increase the <br />reservoir storage capacity. <br />1.2 Scope of Work <br />GEI performed the following scope of work for this project: <br />. 1. Reviewed and compiled available geological and geotechnical information for the <br />area <br />2. Developed, arranged, and observed completion of a subsurface investigation program, <br />which included soil and bedrock borings, field testing, and installation of open- <br />standpipe piezometers <br />3. Performed a geologic reconnaissance of the dam and reservoir site to supplement the <br />findings from the data review <br />4. Performed laboratory tests on selected soil and rock samples collected during the <br />subsurface investigations <br />5. Prepared this geotechnical data report <br />1.3 Background <br />Bowie Resources, Ltd. retained GEI Consultants, Inc. to develop a program to evaluate <br />potential impacts to Bruce Park Dam related to mine-induced ground vibrations or surface <br />subsidence associated with a proposed expansion of Bowie's underground coal mining <br />operations. The proposed mining activity was anticipated to be located approximately 2,100 <br />feet below the ground surface and could be as close as 1,300 feet from the dam site. <br />GEI Consultants, Inc. 1 99292 01-04.16 Geotechnical Data Report