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• 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. Figure 27 indicates that the dissolved <br />solids level of the discharge has increased from an average of approximately 900 mg/I <br />in 1982 and 1983 to almost 1,400 mg/I in 1986, and then decreased to approximately <br />1,100 mg/I since 1987. The decreasing trend was noted to continue in 1996. Figure <br />28 illustrates the variable nature of total recoverable iron concentrations in the Strip Pit <br />discharge. During 1996, these levels occurred within normal ranges established for <br />this site. <br />• PONDS <br />There was only one discharge from the sediment ponds in 1996. The data for <br />discharge points 004, 013, 016, 020, and 021 are presented on Tables 33 through 37. <br />Total suspended solids analyses in lieu of the required, but less stringent, settleable <br />solids analyses were conducted due to a miscommunication with the individuals <br />conducting the sampling. In all instances, the TSS limit of 35 mg/I applicable to <br />sediment ponds in "active" mine areas was met. <br />HYDROLOGIC IMPACTS <br />No significant unpredicted adverse impacts were detected during 1996. The continued <br />drawdown in the Middle Sandstone unit is determined to be the most significant <br />• C-61-044 1996AHR, I'\EMPIREWHft\96AHR\EMPAHR96DOC Page 13 <br />