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Addendum to Geotechnical Data Report <br />Bowie Resources, Limited <br />July 2002 <br />Verde Group. The claystone consists of medium plastic Fines, nearly horizontal bedding, <br />slightly to moderately weathered, slightly fractured, soft to moderately soft, slightly moist, <br />blue, and gray. The sandstone is fine to medium grained, with subangluaz to subrounded <br />grains, slightly to moderately cemented, nearly horizontal bedding, slightly to moderately <br />weathered, slightly to moderately fractured, soft to moderately soft, light tan to gray. <br />5.2.4 Groundwater <br />Groundwater was not encountered in any of the borings at the time of drilling below the <br />landslide, drilling fluid was lost in $L-102 at about 19.5 feet in depth, which corresponds to <br />the likely depth of the failure zone material. The piezometers were not read after installation <br />until May 7, 2002, due to inclement weather. Less than 3 inches of water were present in the <br />piezometers on May 7, 2002. It is our opinion this water is probably from drilling operations <br />and not representative of groundwater conditions. Piezometers were read by Edwazd <br />Scartezina under contract to Bowie Resources. <br />5.3 Main Dam <br />In general, the main dam embankment and foundation consist of four material types <br />identified as new embankment, old embanlanent, foundation soils, and bedrock as described <br />in Geotechnical Data Report (GEI 2001). <br />In Boring BD-104, new embankment material was identified from ground surface to 8.5 feet, <br />old embankment materials from 8.5 feet to 12 feet, foundation soils (glacial deposits) from <br />12 feet to 18.5 feet, and bedrock from 18.5 feet to 23.5 feet. A few small roots and other <br />organic material were identified in the old embankment material. However, an organic layer <br />was not identified. <br />5.3.1 Groundwater <br />Groundwater was not encountered in Boring BD-104 during drilling. Water levels in the <br />existing piezometers in the main embankment were not recorded at the time of drilling <br />because the piezometers were buried in snow and could not be located. Water levels were <br />read on May 7, 2002, for the existing piezometers in the main dam and saddle dam and are <br />summarized in Table 5.1. Piezometers were read by Edward Scartezina under contract to <br />Bowie Resources. When the piezometers were measured, the reservoir level was estimated <br />to be 10 to 15 feet below normal maximum pool, and the reservoir was being filled using the <br />ditch that enters the reservoir just left of the Saddle Dam. <br /> <br />GEI Consultants, Inc. ~~ 9529202-07-03 Atl0enaum Geo~ecnnica Daca Rpt <br />