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pipeline. Therefore, the long term prediction for flow in the spoil spring at the New Horizon #2 Mine <br />is 485 acre feet per year. <br />Overall, there should be no detrimental impacts from the mining operation on groundwater flow <br />and recharge rates. It is definite that ground water flow and recharge in the spoil material will be <br />increased, since the overburden aquifers have historically had very low flow rates and also poor <br />quality. These aquifers have not been used for any wells in the surrounding area and cannot be <br />considered a water resource. The ground water aquifers below the Dakota coals, in the Burro <br />Canyon Formation, are used in surrounding wells and have better water quality but they will not be <br />affected by the mining and reclamation of this site. Shale layers below the mined coals prevent <br />interaction between the spoil and these aquifers, which get their recharge from long distances away <br />from the mine operation. <br />REVISED MAY 2010 2.05.6(3) -25 <br />