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-~ +~ s <br />Hydrologic Balance - Rules 2.04.5, 2.04.7, 2.05.3(4), 2.05.6(3) and 4.05 <br />A. Ground Water Information <br />1. The potentiometric surface of the overburden and alluvial aquifers <br />in the permit area are presented on Map 4, Mine No. 3 Hydrology. These <br />contours were drawn based on October 1980 water level data. The map does <br />not depict overburden ground water gradients in the area. Why wasn't <br />water level data from Monitor Well 008-80-8 and the Lieske Well used to <br />construct this map? The potentiometric surface map should be revised to <br />include water level data from all available bedrock and alluvial monitor <br />wells. <br />RHSPONSS: <br />Nap 4a, !tine No. 3 Hydrology, has been revised to reflect <br />current conditions. Ground water level gradients in the vacinity of b(L'/ <br />the Middle Creek Pit have been derived using historical data from <br />nearby wells, some of which are no longer eaisting due to mine <br />development. Aa noted in the additional material provided in <br />Sahibit 1, Hole 008-80-8 collapsed immediately follwing drilling <br />and is blocked at a depth of 25 feet. Water levels from this well <br />are not considered representative of the potentiometric surface at <br />Nine No. 3. All available data from bedrock and alluvial wells has <br />been used in revised Map 4a. <br />2. Ground water quality data from the proposed permit area are <br />-3- <br />