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Water Information R~GF"~ rr_ ~ Exhibit G <br />DEC 2 7 2006 <br />1. Surface Water General Discussion Division of Reclamation, <br />Mining and Safety <br />The permit azea's pre-mine land use is basically irrigated pasture. Some adjacent properties aze <br />currently used as rangeland, irrigated pasture or wetlands for wildlife habitat. The White River <br />exists to the south of the property and is within 900 feet of the permit boundary, although the <br />mining operations will not have any impact on the river or any other structures related to the <br />river. Cover on the irrigated pasture is good as seen in Exhibit J. <br />The pit is within 900 feet of the White River. The pit's proximity to the river is not expected to <br />be an issue. The 100 yeaz flood plain, as determined by the F);MA maps, does enter the permit <br />azea, however there will only be minimal mining within the 100 yeaz floodplain and no filling <br />will occur above the original topography of the azea, so as not to raise the floodplain in other <br />azeas. Quality and flow rates for the river at this location can be found in Appendix B. <br />The 100 year flood would enter the pit when Phase 3 mining occurs. In this case, water will fill <br />the pit to the flood level and it will subside to the equilibrium ground water level, which is <br />approximately 4 feet below the existing ground surface. After the site is reclaimed, a 100 yeaz <br />flood will still fill the lake, but it will only be able to fi114 feet height since the water will be at <br />that level below the ground surface. Quality and flow rates for the river at this location can be <br />found in Appendix B of the DRMS 112 Permit. <br />There is virtually no chance that the River could capture the lake through erosion of the river <br />banks. The distance of approximately 900 feet is simply too great for this to occur. Many pits in <br />Colorado occur with only 100 feet buffer to the River. <br />During mining and after reclamation, approximately 42 acres of disturbed azea will drain to the <br />piUlake instead of to the River. <br />White River City Pit December 06 H-1 <br />