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May Day Idaho Mine Complex 112 (d) Permit Application <br />• <br />6.4.3(c) All water diversions and impoundments <br />Water diversions will be constructed on the access roads and operational benches as <br />described within the Stormwater Management Plan (Exhibit T, Section 6.4.20.10.b), <br />An augmentation pond to contain 1.0 acre -feet will be constructed in order to meet State <br />Engineer water right requirements (Water Rights Case No. 06CW91). The pond will be <br />constructed as per the design within the Geotechnical Stability Exhibit. Two pipelines <br />will be constructed as extensions of the augmentation pond to: <br />provide water to the La Plata River when there is a call; and <br />acquire water from the underground workings when filling the augmentation pond <br />is required in order to satisfy the State Engineer's requirements. <br />6.4.4(d) The size of area(s) to be worked at any one time <br />As described above, most of the operational activity will occur in underground workings. <br />Surface disturbances are limited to the operational areas depicted on Figure C -4. These <br />individual areas are limited to less than 1.0 acre, and are anticipated to be operational <br />during the life of the mine. <br />Exploration activities will be limited to drill pads of dimensions 100' x 100'. Drilling <br />will occur at one location only during exploration and is anticipated to be worked for <br />approximately 90 days. Each borehole will be abandoned prior to mobilizing to the next <br />drill location. <br />6.4.4(e) An approximate timetable to describe the mining operation <br />The mine plan has been outlined in the approximate order of operation. The approximate <br />timeline; based on a 10 year mine life: <br />Phas <br />e <br />Operation <br />Mine Year <br />1 2 3 4 5 6 <br />7 <br />8 <br />9 10 <br />1 <br />Preliminary Activities <br />2 <br />Milling Optimization <br />3 <br />Day No. 1 Production <br />__ May <br />4 <br />Exploration Activities <br />5 <br />Production Expansion <br />Milling Completion & <br />6 <br />Closure <br />The size and location of each area to be worked in each phase is decribed above in the <br />detailed phase discussions. <br />• <br />May Day Idaho Mine Complex 112(d) Permit Application <br />September 21, 2010 <br />M . <br />