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this year; therefore, flow was not measured at this site. However, field <br />parameters and TDS were measured. This site is upstream of Seneca II <br />Mine discharges. The TDS plot - indicates a decreasing trend. <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 610 to 660 mg /l (8% increase) in June; <br />and 510 to 550 mg /1 (8°s increase) in July. This site displays a <br />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 /1 (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. As stated in the <br />previous paragraph, an 8% increase was observed in June and an 8% <br />increase in July. It appears that the Seneca II Mine has little impact <br />on Fish Creek. Water discharged from the mine is lost to stock ponds, <br />evapotranspiration, and the alluvium as it flows through Twentymile <br />Park. Dissolved solids from mine discharges are diluted during the <br />snowmelt runoff in March and April (prior to the irrigation season) by <br />high stream flows with relatively low TDS concentrations. The natural <br />conditions in Twentymile Park appear to have a much greater impact on <br />the water quality of Fish Creek. <br />Springs. <br />Spoil spring data -may be found after the surface water data presented in <br />Appendix D. Spoil spring data provided are water quality data for the <br />past two years, a hydrograph of historic flow measurements and a LOWESS <br />plot of TDS values. <br />9 _ <br />