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1 <br />Water Quality <br />Summaries of the water quality data for the eight Mine 1 ponds are presented <br />' on Tables 57 through 72 and on Figures 44 and 49 through 53. The field <br />conductivity solids data shows some typical seasonal variation: the water <br />' quality improves during spring runoff. Ponds A, B (Station 63), D, F, and H <br />(Station 57) appear to be impacted by spoil spring inflows. The discharge <br />rates from Ponds B and H are not significant during irrigation season and <br />therefore these ponds do not cause any significant impacts. The mean 1989 <br />irrigation season field conductivity for the ponds A, D and F are <br />' approximately 2800, 3200 and 4000 respectively. These values are similar to <br />those measured in 1987 and 1988. These values are also reflected in the <br />' conductivity level in Foidel Creek at Station 8 wfiicli has a mean irrigation <br />season level of 3300 umhos/cm. The 1989 irrigation season dissolved <br />' solids concentration in Trout Creek below Middle Creek was higher than that <br />above Middle Creek. This increase was in-part due to the salt loading from <br />the spoil springs, however, this increase was not enough to cause material <br />' damage and occurred during a period of very high irrigation withdrawals. <br />Also, the dissolved solids concentrations in Trout Creek were well below the <br />' maximum levels predicted in the salt-loading calculations. For most of the <br />ponds, no sufficient increased levels in any parameters were observed in <br />' 1989. For the bonds effected by spoil springs increased sulphates as well <br />as dissolved solids were observed. Also slightly increased sodium and SAR <br />' were observed. <br />Only occasional discharges during spring runoff were recorded from Mine No. <br />t 2 Ponds in 1989. Therefore no impacts to Fish Creek were observed. <br />1 <br />t <br /> <br />1 <br /> <br />' - 11 - <br />