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• <br />:agpie Creek s::ould be adequate to contain flows from a 100 year flood. <br />alit -The installation and operation of the proposed mine <br />• <br />should have no material effect on the quality of surface waters. <br />Surface waters will not be disturbed in any but the 1st south <br />sub-basin of Newlin Creek. During the first year of mining, no <br />discharges except those caused by severe storms, are expected to <br />be made. A sediment Control plan, ^" 'aP°^ri1+nA in ;!atail in <br />'__ :._____ _ ____ =, has been developed to limit the flow of sediment <br />into the Tewlin Creek drainage. In the later years of the life <br />of the mine, some pumpage from the workings will probably be <br />required. Samples of groundwater analyzed from test holes in the <br />area -indicated -this water to be-of-relatively good quality. Puz:page <br />from the mines is not expected to deteriorate the quality of any <br />surface waters. <br />Effects on Groundwaters <br />antit -Mining of coals in the Vermejo Formation and the <br /> <br />dewatering which will be required are not expected to significantly <br />affect existing groundwater rights in the area. As mining progresses, <br />the Thompson well in Section 25, T20S, R70F', could realize a dec'_ine <br />in water levels. Ho:*ever, the appropriation of this well is so <br />small (10 gpm) that it should not be a significant problem to restore <br />this water to the owner from another source if the well is distL=beZ. <br />_' S_ <br />3-15 <br />