Laserfiche WebLink
<br /> Water Quality <br /> <br /> Water quality samples are collected at al l the sites on a regular basis. The <br /> water quality summaries are presented on Tables 30 to 39. Plots of historic <br /> dissolved and suspended solids for Foidel Creek are presented on Figures 25 and <br />' 26. Plots of historic dissolved solids for Fish Creek are presented on Figures 27 <br /> and 28. <br />The base levels of dissolved solids, measured during spring runoff, was <br />approximately the same for both the upstream and downstream sites on Foidel <br />' Creek. It is approximately 250 mg/L for site 14 and 300 mg/L for Site 8. <br />1. <br />' Since 1981 the base level for dissolved solids at the downstream site has been <br />I increasing and now is at approximately 1000 mg/L. Also, prior to 1981 the average <br />' dissolved solids concentration of the two sites was similar. Since that time the <br /> dissolved solids at Site 2005/8 has been increasing. During irrigation season the <br /> dissolved solids at Site 14 is approximately 600 <br />l <br />2400 <br />Si <br />h <br />b mg/L and at site 2005/8 <br />f <br />h <br />b <br />i <br />i <br />b is <br />f <br /> approximate <br />ese increases <br />egan <br />e <br />ore t <br />nn <br />ng <br />y <br />mg/L. <br />nce t <br />e <br />eg o <br /> underground mining they are at least partly due to the effects of surface mini ng. <br />' The discharges related to surface mining are much greater than the underground <br /> mining discharges during the spring runoff and are still greater during the <br />irrigation season. Therefore, the increase in the spring runoff dissolved solids <br />levels is probably due primarily to the effects of the surface mine. The increase <br />in the dissolved solids levels during the irrigation season is at least partly due <br />to the effects of the underground mining. <br />' The suspended solids level upstream and downstream of the mine portal are very <br /> similar and no significant impact on suspended solids levels is evident. Other <br />' than increased levels of sodium, sulphate, and SAR in the stream no other <br /> significant water quality impacts at least partly due to underground mining have <br />' I been detected. The increase in SAR levels during irrigation season is not <br />IL sufficient to cause material damage. <br />' The dissolved solids levels in the upstream station on Fish Creek (Site 1001) are <br />lower than those in the two downstream stations (1002/26 and 1003). This <br />