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2003 0. 000 cfs <br />2002 0. 000 cfs <br />2001 0. 000 cfs <br />2000 0. 000 cfs <br />1999 0. 005 cfs <br />1998 0. 165 cfs <br />1997 0. 095 cfs <br />1996 0. 065 cfs <br />(monthly measurements) <br />(weekly measurements) <br />No flow was observed at this site in the past since 1999. Review of this <br />site's TDS plot indicates an increasing trend. Baseline data for this <br />site (WSS3) has been provided in Appendix E1. <br />- Surface Water Site SW-52W-FG4 (WSSF3). This site is situated on Sage <br />Creek downstream of the impacts from the Seneca II-W Mine (NPDES 009 and <br />015). Monitoring of this site commenced in September 1990. This site <br />displays an increasing TDS trend. Baseline data for this site has been <br />provided in Appendix E1. <br />The Seneca IZ-W PHC (revised 3/01) predicts an irrigation season (June- <br />September) average TDS value of 641 mg/1 on Sage Creek, while a value of <br />735 mg/1 was observed this year. The value observed this year in only <br />15~ greater than the predicted value. However, the maximum TDS value <br />observed during the same time frame at NPDES 015 was only 370 mg/1 and <br />NPDES 009 did not discharge this year. The lower than average <br />precipitation observed the in previous years may still have an impact on <br />TDS values. <br />Springs. Spring data may be found after surface water data in Appendix <br />E. Data provided are a water quality report for the past two years, <br />historic flow measurements and remarks, a LOWESS plot of electrical <br />conductivities (EC, corrected to 25° C, since 10/1/89), and a historic <br />listing of percent milliequivalents of major ions and TDS. Baseline <br />water quality statistics for springs downstream of mining (when <br />available) has been provided in Appendix E1. Springs with a flow less <br />than 5 gpm (0.011 cfs) are analyzed for field parameters only. In <br />~J <br /> <br /> <br />IS <br />