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.. <br />The water quality of the spoils springs show exceedingly high concentrations <br />of sulfates (ranging as high as 2730 mg/1), manganese (2 ma/1 ), and nitrites <br />(0.32 mg/1). Copper and cyanide concentrations occasionally exceed receiving <br />stream standards. .411 spoils springs pass through sedimentation ponds, and <br />surface runoff has historically diluted most impacts to acceptable levels. <br />Manganese concentrations of impounume.nts fed by large springs are regularly <br />exceeding the stream standard despite dilution. <br />Fish Creek Drainage <br />CY'JCC monitors two sites along Fish Creek in conjunction with the C-81-071 <br />permit. Site 1001 is the upstream site, and historical flows range from <br />0-120 cfs; 1986 flows ranged from d-1ZO cfs. Flows at this site exceed those <br />at the downstream site in the summer due to irrigation demands on water use. <br />Site 1002 historical flows range from 3-250 cfs and flows during 1986 ranged <br />from 3-i40 cfs. This calcium-magnesium bicarbonate water has a moderate <br />hardness and is slight! alkaline. <br />The totally reclaimed Mine 7_ was adjacent to Fish Creek. Iron and manganese <br />levels (2.57 mg/1 and 0.08 mg!1 respectively) at the upstream, undisturbed <br />site exceed recoirnnended standards and concentrations increase downstream from <br />the mine. Nitrite levels also exceed standards at the downstream site. TDS <br />concentrations increase, but .s re much lower than the standard (561 mg/1 <br />average). Four to eight springs have been identified in the reclaimed area, <br />producing 1C-27 qpm of `law in late May 1986, with conductivities averaging <br />1367 mmhos/cm. Ponds at Mine 2 did not discharge during 1986. <br />lal <br />cc: R. G. Liddle <br />D. T. Mathews <br />0968E <br />