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Christy Woodward <br />July 31, 2008 <br />Page 6 <br />trowel or shovel to a relatively shallow depth (e.g.,1 foot below ground surface). Background <br />soil sample collection will be conducted in accordance with the Colorado Department of <br />Public Health and Environment (CDHPE) Proposed Soil Remediation Objectives Polio,/ (CDPHE <br />1997; Attachment 4). Background soil samples will only be analyzed for total metals. <br />Field Activities, Methods, and Procedures <br />This section discusses sampling equipment and sampling procedures for development rock, <br />ore, and soil sampling. <br />Equipment and Supplies <br />The following :is a list of supplies needed to collect the samples: <br />¦ Track mounted hydraulic excavator or backhoe (for test pit/trench excavation) <br />¦ Hand shovel/ trowel or one-time use disposable scoop <br />• Pick axe <br />• <br />• Decontamination supplies, e.g. distilled water, liquinox or equivalent laboratory cleaner, • <br />and scrub brush for small equipment decontamination <br />• 1 gallon zip :lock bags <br />¦ 5-gallon buckets with lid <br />¦ Sample paperwork and sample tags/labels <br />¦ Sample cooler or suitable shipping container <br />Development Rock. Sample Collection <br />Subsurface development rock samples will be collected using a track-mounted excavator or <br />backhoe. Each of the three subsurface samples will be collected from individual trenches on <br />the development rock areas from a depth of approximately 2 to 4 feet. Sampling will be <br />conducted using the following procedure: <br />With the use of a track-mounted excavator or backhoe, dig three trenches approximately 4 <br />feet deep and the width of the excavator bucket, perpendicular to the current face of each <br />development rock pile. Each trench should be approximately evenly spaced along the <br />major axis of each development rock pile. The length of each trench should be as long as <br />needed to adequately describe the characteristics of the area.. For each trench, place <br />excavated materials from 2 to 4 feet as uniformly as possible to enable sample collection <br />and USCS logging. <br />0 <br />0:164986 - Denison%Task Order 3 - DMO Sampling and Analysis Plan\Task 3.1 - Soil Ore Rode Data Collee8on Plan\Rnal Denison Sunday Mines Group Sal Ore Rock Data <br />Caleclion Work Plan.doc