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SPRINGS <br />FLOWS <br />One spring on the mine site area is being monitored. The spring is the #1 Strip Pit <br />Discharge. The #1 Strip Pit Discharge is a NPDES monitoring point. There are a few <br />other springs and local permanent "damp spots" in the area; however, their combined <br />flow is normally less than 10 gpm and are, therefore, not significant. The annual <br />discharges for the #1 Strip Pit are presented in Figure 25 and the 1995 discharge <br />measurements are presented on Figure 26. The discharge from the #1 Strip Pit <br />increased significantly in 1989. This may have been due to seepage from the ditch <br />that conveys the 7 North Angle discharge. The 7 North Angle discharge began in <br />January of 1989. However, discharge rates from 1990 through 1993 are considerably <br />lower and within the range observe during 1982 through 1986. Nevertheless, <br />O snowmelt and ditch seepage both appear to have some influence on the Strip Pit <br />discharge, as the discharge generally drops to just a few gpm from January through <br />May with a small peak in March coinciding with spring runoff. <br />WATER QUALITY <br />The summary of the water quality data for the spring is presented in Tables 31 and 32. <br />A plot of dissolved solids for the #1 Strip Pit is presented in Figure 27 and iron <br />concentrations are presented on Figure 28. It indicates that the dissolved solids level <br />of the discharge has increased from an average of approximately 900 mg/I in 1982 <br />and 1983 to almost 1,400 mg/I in 1986, and then decreased to approximately 1,100 <br />c-ei-oaa 1995 AHR (Revisetl 1/97) Page 11 <br />