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immediate vicinity of the pit. However, as the <br /> degree of irrigation within the permit area will <br /> decrease as mining progresses, especially near the <br /> pit, this approximation should have little <br /> consequence. <br /> c. Of the estimated 43.8 acre-feet pumped from the <br /> pit, 18 acre-feet (43.8 x 5 mos/12 mos) pumped during <br /> the winter non-irrigation season (November to March) <br /> does not affect irrigation rights. Therefore a <br /> supply of 43.8-18. 0 or 25.8 acre-feet is needed to <br /> augment water rights impacted by mining. <br /> d. It was conservatively assumed that the entire 25.8 <br /> acre-feet comes from the designated impacted water <br /> rights. <br /> e. In order to effectively augment the potentially <br /> impacted rights, an administration loss factor of 0. 5 <br /> is used. Therefore 2 x 25.8, or 51. 6, acre-feet will <br /> be used for augmentation. <br /> The total conservatively estimated mining-phase water <br /> requirement is therefore 100.9 acre-feet. Of this, 49. 3 <br /> acre-feet will be consumptively used. The remainder (51. 6) <br /> is non-consumptive. <br /> 17 <br /> GEOTRANS, INC. <br />