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WATER QUALITY <br />• Summaries of the water quality data are presented in Tables 30 <br />through 33. A plot of upstream and downstream field electrical <br />conductivity measurements for the river is presented in Figure <br />27. The data indicates that the surface water quality does not <br />show any significant variation from expected values. The <br />comparisons of data from the upstream and downstream station <br />on the Williams Fork River indicate that there is no <br />detectable effect of mining on river water quality. As <br />expected, conductivity decreases with increasing flow rate in <br />the rivers. This is due to the effects of snow melt and high <br />rainfall diluting the water. <br /> SPRINGS <br />• <br /> FLOWS <br /> One spring on the mine site area is being monitored. The <br /> spring is the #1 Strip Pit Aischarge. The #1 Strip Pit <br /> Discharge is a NPDES monitoring point. There are a few other <br /> springs and local permanent "damp spots" in the area; however, <br /> their combined flow is normally less than l0 qpm and are, <br /> therefore, not significant. The measured discharges for the <br /> #1 Strip Pit are presented in Figure 28. The average <br /> discharge from the #1 Strip Pit in 1993 was 25 gpm. The <br /> discharge from the #1 Strip Pit increased significantly in <br /> 1989. This may have been due to seepage from the ditch that <br /> conveys the 7 North Angle discharge. The 7 North Angle <br /> discharge began in January of 1989. However, discharge rates <br />. <br />IG <br />