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1 <br /> <br />EFFI_UENf MONITORING <br />' One sediment control strur_ture is monitored at Mine 3, Pond 8. In addition, <br />Station 24 is located at the reclaimed area of the abandoned M1liddle Creek <br />underground mine. <br />' Flows <br />The flow rate data For the effluent sites are summarized on Table 14. The <br />' historic discharge data for Station 24 is presented in Figure 21. <br />Discharges from these ponds are effected by seasonal variations irr <br />' precipitation. There was only a few intermittent discharges from Station 76 <br />(Pond B) in 1988. The discharges from this station are generally small. The <br />' plot for Station 24 shows the typical seasonal variation with discharges <br />during spring runoff and cessation of flow during most of the rest of the <br />' year. <br />Water Quality <br />' Summaries of the water quality data for the two effluent sites ar•e presented <br />' on Tables 22 through 25 and on Figures 22 and 23. The electrical <br />conductivity data shows some typical seasonal variation: the water quality <br />improves during spring runoff. TFre plots also show that the discharge sites <br />do not have any detectable effect on the water quality in Middle Creek. <br />Neither site is exhibiting in long term trends. Since none of these sites <br />have significant discharges during the irrigation season they do not cause <br />any significant impacts. <br />i <br /> <br />1 <br /> <br /> <br />-8- <br />