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after the repair until October 2005. Review of the TDS plot (SF 0.25) <br />recently indicates a stable trend. <br />- Surface Water Site SW-S2-12 (SSB12). This site monitors Bond Creek at <br />its confluence with Fish Creek. It is monitored May through July on a <br />monthly basis. This year, no flow was observed at this site in July, <br />although NPDES 008 upstream was flowing continuously. This reduction in <br />flow is due to stream channel infiltration and evapotranspiration. The <br />TDS plot indicates a decreasing trend. <br />- Surface Water Site SW-S2-11 (SSF11). This site monitors Fish Creek <br />upstream of its confluence of Cow Camp Creek. It is required to be <br />monitored May through July on a monthly basis, but only if either Sites <br />10 or 12 are flowing (for this year, May and June). However, field <br />parameters and flow estimates may sometimes be provided voluntarily when <br />not required. This site is upstream of Seneca II Mine discharges. <br />- Surface Water Site SW-S2-13 (SSF13). This site monitors Fish Creek <br />downstream of its confluences with Cow Camp Creek and Bond Creek. It is <br />monitored at the same frequency as Site 11. The increase in TDS values, <br />from Site 11 to Site 13, was from 250 to 270 mg/l (8% increase) in May, <br />340 to 360 mg/l (6% increase) in June and 700 to 660 mg/1 (6% decrease!) <br />in July. This site displays a decreasing TDS trend. <br />On Page 7-247 of the Seneca II Mine Probable Hydrologic Consequences <br />(PHC), predictions were made for the TDS increases to be observed on <br />Fish Creek during the months of June and July due to discharges from the <br />Seneca II Mine. In June, an increase from 421 to 497 mg/l (18%) is <br />predicted between SSF11 and SSF13. In July, an increase from 533 to 607 <br />mg/1 (13%) is predicted between SSF11 and SSF13. Neither lower Bond <br />Creek nor lower Cow Camp Creek was flowing in July this year. As stated <br />in the previous paragraph, a 6% increase in TDS was observed between the <br />two sites in May, a 7% increase was observed in June and a 6% decrease <br />was observed in July. It appears that the Seneca II Mine has little <br />impact on Fish Creek. Water discharged from the mine is lost to stock <br />ponds, evapotranspiration, and the alluvium as it flows through <br />12