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Colowyo, 01981 -019, PR3 adequacy No. 3 2 July 22, 2011 <br />• Township 4 North, Range 94 West, Section 36 <br />• Township 4 North, Range 93 West, Section 31 <br />• Township 3 North, Range 94 West, Section 1 <br />• Township 3 North, Range 93 West, Section 6. <br />Rule 2.04.7(3) Alternative Water Supply Information <br />The application is deficient with regard to any analysis or study to determine what, if any, <br />impact could occur to registered ground water users proximate to the mine dewatering <br />operations that will occur over the life of the mine. In particular, mining in the Collom Lite pit <br />will result in dewatering of the overburden to varying degrees from both pit dewatering and pit <br />development. Please provide permit text narrative discussing specific details regarding <br />dewatering and associated impacts, including estimates of the cone of depression, maps, cross - <br />sections and other information sufficient to reflect what impacts may occur to registered <br />owners of wells in the proposed permit and adjacent area. <br />The application remains inadequate. Revised information submitted on page 133 under the <br />heading "Potential Impacts to Groundwater Users due to Pit Dewatering and Development" <br />provides no specific information on wells, well ownership, well permit number, areal extent of <br />the cone of depression, or any other specific information or estimate of the extent that pit <br />dewatering and pit development could impact registered wells proximate to the pit. The <br />original question remains outstanding. Please provide permit text narrative discussing specific <br />details regarding dewatering and associated impacts, including estimates of the cone of <br />depression, maps, cross - sections and other information sufficient to reflect what impacts may <br />occur to registered owners of wells in the proposed permit and adjacent area. <br />The application remains inadequate. DRVI, .,,. , I'l_..1 11 1 1 , ,, .11 ,..,, i lie cone of <br />depression to reflect what impacts may occur to registered oe nors of meclls io the proposed <br />permit and adjacent area. A simple conservative calculation using the Theis equation or similar <br />method will suffice. <br />No additional response is necessary, as impacts to registered well owners is addressed under <br />2.05.6(3)(a), Protection of the Hydrologic Balance. <br />Rule 2.05 - Operations and Reclamation Plan : <br />Rule 2.05.3(2)(a) requires that a detailed narrative and appropriate maps be prepared, <br />describing the land to be affected within the permit area according to the proposed sequence of <br />mining and reclamation. Each narrative and/or map shall include a detailed timetable sufficient <br />to describe the various mining phases proposed. The Cullom Mine Plan is illustrated on Map <br />23B; Map 29B shows the proposed Spoil Grading by year. When combined with information <br />found on the Temporary Spoil Pile Design (Map 29C) and the Little Collom Sump design, as <br />illustrated in Exhibit 7 Item 26 Figure 2 (Fig. 2), the overall sequence of activities for the Little <br />Collom X Pit, the Temporary Spoil Pile, and the Sump is not clear. <br />