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RAG. Empire Corporation 2000 AHR <br />springs and local permanent "damp spots" in the area: however, their combined flow is <br />normally less than ]0 gpm and is therefore not significant. The annual discharges for the #1 <br />Strip Pit are presented in Figure 25 and the 2000 discharge measurements are presented on <br />Figure 26. The discharge from the #1 Strip Pit increased significantly in 1989. This may have <br />been due to seepage from the ditch that conveys the 7 North Angle dischazge. The 7 North <br />Angle discharge began in January of 1989. However, discharge rates from 1990 through 2000 <br />are considerably lower and within the range observe during 1982 through 1986. Nevertheless, <br />snowmelt and ditch seepage both appear to have some influence on the Strip Pit discharge, as <br />the discharge generally drops to just a few gpm from .lanuary through May with a small peak in <br />March coinciding with spring runoff. <br />WATER QUALITY <br />The sunmrrary of the water quality data for the spring is presented in Tables 31 and 32. A plot of <br />dissolved solids for the #1 Strip Pit is presented in Figure 27 and iron concentrations are <br />presented on Figure 28. Figure 27 indicates that the dissolved solids of the discharge has <br />increased from an average of approximately 900 mg/1 in 1982 and 1983 to almost 1,400 mg/1 in <br />1986, and then decreased to approximately 1,100 mg/I since 1987. Figure 28 illustrates the <br />variable nature of total recoverable iron concentrations in the Strip Pit discharge. During 2000, <br />these levels occurred within normal ranges established for this site. <br />PONDS <br />There was no discharge from the sediment ponds in 2000. <br />• <br />I:\Environmental\EMPIREWiR\2000\Text\Empire2000AHR.doc Page 7 <br />