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1988 = 0.104 cfs (reservoir did not completely <br />fill until February 25, 1988) <br />This year's average flow value, 0.103 cfs, is 44$ of the historic (1988- <br />2006) average flow value, 0.234 cfs. Due to high sediment levels, this <br />pond was dredged out in 2002. In April 2005, it was noted that the <br />discharge pipe riser had rusted out. It was replaced in July 2005 with <br />an eight inch plastic pipe set at an elevation approximately four feet <br />above the elevation of the old dewatering orifice. No flow occurred <br />after the repair until October 2005. Review of the TDS plot (SF 0.5) <br />indicates an increasing trend, with some recent stabilization. <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 almost continuously. This <br />reduction in flow is due to stream channel infiltration and <br />evapotranspirat ion. The TDS plot indicates a recently stable trend. <br />- Surface Water Site SW-S2-11 (SSFil) 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, only in May and June). However, <br />field parameters and flow estimates may sometimes be provided <br />voluntarily when not required. This site is upstream of Seneca II Mine <br />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 300 to 340 mg/1 (13g increase) in May <br />and 600 to 630 mg/1 (5°s) in June. No TDS samples were collected in July. <br />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 />14 <br />