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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 / Dry 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. It was monitored weekly (except when <br />inaccessible by truck), but is now monitored monthly. Average flow <br />values for each water year are: <br />2012 0.053 cfs (monthly measurements) <br />2011 0.681 cfs (monthly measurements) <br />2010 0.225 cfs (weekly measurements till 7/1, then monthly) <br />2009 0.245 cfs (weekly measurements) <br />2008 0.272 cfs " <br />2007 0.163 cfs it <br />2006 0.162 cfs IF <br />2005 0.119 cfs " <br />2004 0.080 cfs ft <br />2003 0.187 cfs FF <br />This year's average flow was 74% below than the average historic (1990- <br />2011) flow, 0.204 cfs. It is also the lowest annual average on record. <br />The timing of when flow values are collected affects these averages. <br />Also affecting the historic flow average is a large number of 'no flows' <br />that occurred up thru 2007. This site now normally flows continuously. <br />However, this year, flow was intermittent. The TDS values at this site <br />are increasing. Baseline data from Site SW- S2W -SG17 (WSH17) has been <br />provided in Appendix E1 of the 2010 AHR. <br />11 <br />