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the sake of brevity, the prefix that precedes all surface water site <br />names will often be dropped throughout this report. As an example, Site <br />SW-S2W-SG7 (WSH7) will be referred to as Site 7. <br />Hubberson Gulch / Drv Creek <br />- Surface Water Site SW-S2W-SG9 (WSH9). This Hubberson Gulch site is <br />upstream of NPDESI7 and all other mine related discharges in the II-W <br />South Expansion area. Monitoring at this site began in August 1997. No <br />monitoring was performed in the 1999 calendar year, but was resumed in <br />2000. This site is monitored in June and September. This site displays a <br />stable TDS trend. <br />- NPDES 017 (NPDESI7). This site exists on Hubberson Gulch in the II-W <br />South Expansion area. Construction of Pond 017 began on October 14, 2002 <br />and was completed in December 2002. This year, flow was continuous. It <br />was monitored weekly (except when inaccessible by truck), but is now <br />monitored monthly. Average flow values for each water year are: <br />2010 0.225 cfs (weekly measurements till 7/1, then monthly) <br />2009 0.245 cfs (weekly measurements) <br />2008 0.272 cfs IT <br />2007 0.163 cfs IT <br />2006 0.162 cfs <br />2005 0.119 cfs " <br />2004 0.080 cfs " <br />2003 0.187 cfs " <br />This year's average flow was 26% greater than the average historic <br />(1990-2010) flow, 0.179 cfs. The timing of when flow values are <br />collected affects these averages. Also affecting the historic flow <br />average is a large number of 'no flows' that occurred up thru 2007. This <br />site now flows continuously. The TDS values at this site have recently <br />stabilized (SF 0.5). Baseline data from Site SW-S2W-SG17 (WSH17) has <br />been provided in Appendix E1. <br />- NPDES 016 (NPDESI6). This site exists on a Hubberson Gulch tributary <br />in the II-W South area. Pond 016 was nearly complete in September 2000, <br />12