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RULE 2 PERMITS <br />into the drainages as the seasons progress. Runoff-related TDS values are much less due to the dilution of <br />the minerals influencing this constituent. <br />Specific conductivity is a measure of TDS and also shows the same variability. Parker and Turk (1981) <br />and Bishop and others (1982) have examined and discussed the potential impacts of mining on the <br />hydrology of the Yampa River Basin, and have related TDS and specific conductivity to predictive <br />models of impacts. Both studies show that the Colowyo Mine will have no significant impact on the water <br />quality for the short and long term. Other constituents will not be significantly affected as a result of <br />mining. Iron and manganese mean values did not exceed specific health related criterion or show signs of <br />acid mine drainage. <br />Based on the data collected over the life of the mine to date and on the projections made by Skogerboe <br />and others (1979), Parker and Turk (1981) and Bishop and others (1982), it is evident that the Colowyo <br />Mine will not have a significant long term impact on the surface water quality in the permit area. The <br />establishment of surface water monitoring locations by Colowyo on Goodspring Creek, both above and <br />below the mining operation, was designed to identify mining impacts on surface water. To date, there has <br />been no significant differences between the locations. As shown in the 1986 Annual Report, there were <br />increases in all parameters during 1984 and 1985, but the same trends were documented for all surface <br />water monitoring locations. Surface water monitoring locations are shown on Map 37. <br />Effects of MininLi on Water Rights <br />No significant effect will occur to surface or ground water rights in or adjacent to the Colowyo Mine. <br />Water consumed by Colowyo as a part of their water rights will be done in accordance with the Colowyo <br />Water Augmentation Plan approved by the Colorado State Engineer's Office and the Division of Water <br />Court. <br />Rule 2 Permits 2.04.7-33 Revision Date: 6/23/08 <br />Revision No.: MR-91