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CDM , <br />Memorandum <br />06ti?? flvo <br />v? <br />e?n <br />To: Christy Woodward - Environmental Coordinator <br />Terry Wetz - Director Project Development <br />Denison Mines (USA) Corp. <br />From: Nick Anton, P. E. - Environmental Engineer <br />Mark Nelson, P. G. - Senior Hydrogeologist <br />Todd Bragdon, P.E. - Project Manager <br />CDM Inc. <br />Date: July 31, 2008 <br />Subject: Development Rock, Ore, and Soil Characterization Data Collection <br />Work Plan, to Address Designated Mining Operations (DMO) Status <br />Sunday Mines Group and Van 4 Mine, San Miguel County, Colorado <br />CDM Project No. 64986.03 <br />CDM has prepared this draft data collection work plan for Denison Mines (USA) Corp. <br />(Denison) in accordance with our master services agreement (MSA), Task Order No. 3. This <br />work plan describes data collection procedures to be used by Denison to evaluate metals <br />concentrations and physical properties of development rock, ore, and soil at the Sunday <br />Mines Group located in San Miguel County, Colorado and the Van 4 Mine located in <br />Montrose County, Colorado (site). The Sunday Mines Group includes the following mines: <br />¦ Carnation Mine, <br />¦ St. Jude Mine, <br />¦ Sunday Mine, <br />¦ Topaz Mine, and <br />¦ West Sunday Mine. <br />The locations of the Sunday Mines Group and the Van 4 Mine are presented in Figures 1 and <br />3, respectively. CDM developed this data collection work plan to support the proposed <br />program for environmental analysis at the Sunday Mines Group and Van 4 Mine as described <br />in Denison s March 31, 2008 letter (Denison 2008) to the Colorado Division of Reclamation <br />Mining and Safety (DRMS) in response to the DRMS' Notice of Determination of Designated <br />Mining Operations (DRMS 2008a). This evaluation is the first phase of an investigation <br />planned by Denison to address Designated Mining Operation (DMO) status at the Sunday <br />Mines Group and Van 4 Mine as set forth by the Colorado Mined Land Reclamation Act and <br />0:\64986 - Denison\Task Order 3 - DMO Sampling and Analysis Plan\Task 3.1 - Soil Ore Rock Data Collection PlanTinal Denison Sunday Mines Group Soil Ore Rock Data <br />Collection Work Plan.doc