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iv <br />Executive summary <br />1 <br />As part of the pre - feasibility hydrogeologic assessment, WMC identified additional or <br />continuing studies that would be required to support the feasibility study and permitting. <br />Recommended tasks to support the feasibility study include: <br />• defining the hydrology of the burn zones and evaluating their potential <br />impact on pit dewatering; <br />• evaluating hydrogeologic conditions in the Phase 2 area to determine <br />whether the data collected from the pilot test well are representative of <br />conditions across the proposed mine; <br />• evaluation of hydrogeologic conditions outside the immediate area of the <br />Collom Mine; <br />• refining the dewatering /slope depressurization system design and water <br />management plan; and <br />• a geochemical evaluation of spoils to support waste rock management <br />options. <br />Recommended tasks to support permitting include: <br />• the forthcoming regional groundwater model; <br />• continued surface water and groundwater monitoring and evaluation of <br />data; <br />• additional evaluations for delineation of AVFs; and <br />• hydrologic evaluation of aspects of mine closure and reclamation. <br />• <br />2572 -R <br />Colowyo Coal Company <br />Water Management Consultants <br />