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variation with a rapid rise and fall of flow rates during spring runoff. <br />Stations 14 and 800 often did not flow during the fall and winter because <br />they are near the top of the drainage. Due to the spoil springs, Foidel <br />1 Creek has flowed year-round at site 800 since 1985. The flow at Station 8 <br />1s maintained essentially year-round by the discharge from the underground <br />mine and discharges from the spoil springs. Zero flows indicated for Sits <br />16, 69, 1001, 8, 1002, and 1003 during the winter actually are usually due <br />to the streams being frozen, preventing a measurement of the flow. <br />The data indicates a fairly good correlation between upstream and downstream <br />' stations on each stream. As expected the upstream stations generally had a <br />lower flow than the downstream stations on each stream. The downstream <br />' station on Fish Creek does not show any evidence of an increase in discharge <br />which may be due to Mine 2. The downstream sites at Mine 1, howev h~ show <br />some effect due to spoil spring discharges. <br />Water Quality <br /> Water quality samples are collected at all the sites on a regular basis. <br /> The water quality summaries are presented on Tables 29 through 46. Plots of <br />' historic water quality data for Foidel Creek are presented on Figures 34' <br /> through 37. A plot of historic water quality data for Fish Creek is <br /> presented on Figure 38. A plot of water quality data for Middle Creek is <br /> presented on Figure 39. Plots of historic water quality data for Trout <br /> Creek are presented on Figures 40 and 41. <br />' All streams experienced an increase in salt loading during 1987, both <br />upstream and downstream stations. This is probably due to the lo-ier than <br />' normal runoff in the spring of 1987. It does not appear to be due to <br />mining. While the spoil springs are adding some manganese to Foidel Creek, <br />' the effect at Station 8 is not detectable. The spoil springs are causing a <br />rise in the salt loading at Station 8; however, the effect diminishes <br />downstream and is not causing any material damage. No impacts were observed <br />on the other streams. <br /> <br /> <br />- 7 - <br />1 <br />