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Geotechnical Data Report Bruce Park Dam <br />Bowie Resources, Limited <br />011 April 2001 <br />Section 3 - Geological and <br />Geotechnical Investiqations <br />3.1 General <br />GEI performed geologic mapping and subsurface geotechnical investigations at the site. <br />The geotechnical investigations included drilling exploratory borings at the main dam <br />and saddle dam and installing open standpipe piezometers. The geologic mapping and <br />field investigations were performed between November 18 and November 29, 2000. <br />Agapito Drilling, Inc., of Grand Junction, Colorado provided the drilling services under <br />contract to Bowie Resources, Ltd. GEI observed the drilling and field testing, logged the <br />soil and rock materials obtained from each hole, preserved the samples, and maintained <br />records of drilling activities. A summary of the boring locations, depths and piezometer <br />installations is presented in Table 1. The approximate boring locations are shown on <br />} Figure 2. <br />3.2 Geologic Mapping <br />GEI performed surficial geologic mapping of the main dam, saddle dam, and surrounding <br />areas. The mapping was recorded on a 1" = 100' scale topographic base map of the site <br />provided by Bowie Resources, Ltd. The field mapping generally confirmed our <br />interpretation of published references for the area. A geologic map of the dam and <br />reservoir area is provided on Figure 3. <br />3.3 Exploration Borings <br />Seven exploratory borings were drilled at selected locations in the main dam and saddle dam <br />areas. The borings were approximately located based on topographic features identified on <br />the base topography provided by Bowie Resources. The objectives of the exploration <br />borings were to: 1) identify subsurface stratigraphy and subsurface conditions within the <br />main dam and saddle dam; 2) identify subsurface stratigraphy and subsurface conditions in <br />the foundation below the main dam, saddle dam, and abutments; 3) obtain samples of dam <br />and foundation materials, for visual examination and laboratory testing; and 4) perform field <br />tests at selected intervals in the main dam, saddle dam, foundation and abutment materials. <br />GEI Consultants, Inc. 4 99292 3'-:.4-16 Geotecnncal Data Report