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96 61 05 le~4l S E6S 585 9947 8RA DENVE: <br />BATTLE MOUNTAIN RESOURCES, SAN LUIS PROJECT <br />CMLRD ADEQUACY LETTER RESPONSES <br />Page 27 of 29 <br />EXHIBIT G, PATER RESOURCES <br />47. The water balance identifies the three (3) sources of water to be <br />obtained from: (1J affsite, (2J recycled tallings slurry, and (3J <br />pft dewatering. The offsite supply is dependent upon a water court <br />decision on change of use yet to be finalized. A plan-for- <br />augmentation is also a part of this ruling. A second Court case is <br />pending to adjudicate nontributary water. At this time, please <br />discuss the following for clarffication purposes; <br />a. As the tailings disposal area is to be lined and designed to <br />recycle incident precipitation from a 2D5 acre area, is this <br />amount of water considered in the plan-for-augmentation or <br />temporary substitute supply plan? <br />b. How is the amount of moisture retained in the tallings <br />considered from a water rights perspective? <br />RESPONSE: Battle Mountain's proposed plan for augmentation contemplates the <br />consumptive use of 1,647 acre-ft/yr of water. Battle Mountain's <br />proposed temporary substitute supply plan contemplates the <br />consumptive use of 500 acre-ft of water during 1990 fora period of <br />one year during the initial start up phase. In these water rights <br />filings, Battle Mountain has assumed that incident precipitation on <br />the tailings area and moisture retained in the tailings will <br />constitute consumptive use of water and has allocated a sufficient <br />quantity of water to cover both potential uses. <br />EXHIBIT L, RECLANATION COSTS <br />48. Based upon Exhibit D and Figures C-11 and C-13, 1t would appear that <br />a point of maximum disturbance within the tailings disposal facility <br />is reached near the end of the life of the facility. At that point <br />in time, the configuration of the tails 1s such that a slope toward <br />the center of the facility has been created, Please include an <br />estimated cost to grade the entire facility to achieve a .!.5X grade <br />toward a central, armored ditch, which would convey water off the <br />facility surface to the spillway. <br />RESPONSE: Revised Exhibit L contains a cost for construction of the small law <br />flow channels over the tailings Impoundment as per MLRD discussion <br />and the responses to comments 41 and 42. <br />11 <br />