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• <br />L J <br />Hydrologie Aam lntepunrion mid Imyact A.mavnau fir rht Pamir mdAdjacou Airar <br />NPDES etDuent limitations. During winter base- <br />Ilow and summer conditions water quality in the <br />North Fork is better and is within NPDFS effluent <br />limitations. However, this is the time of year when <br />MCCs ponds are rarely discharged. <br />Flow volumes from MCC sediment ponds are low <br />relative to the North Fork of the Gunnison flows. <br />Even doting low Ilow conditions on the North <br />Fork MCC discharges represent an impetcepn'ble <br />difference in stream quality. <br />Based on the anatyses,sediment pond discharges <br />have had no adverse impact on the North Fork of <br />the Gunnison River. 7'he quality of discharges <br />usually exceeds the quality of the North Fork In <br />addition, pond discharge flows are so small that <br />incremental changes in concentrations in the North <br />Fork are impercepu'ble. <br />Discharges of surface runoffin 1992 are expected <br />to be similar to 1991. <br />• 16 <br />