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Surface Water Site SW-S2W-FG1 (WSHF1). <br />This site is located on Hubberson Gulch downstream of the 006 Gulch <br />confluence. It has been monitored since July 1979. Irrigation ditches <br />were established adjacent to this site in July 1999. The TDS plot <br />indicates an increasing trend, with the peak TDS value of 3730 mg/l <br />occurring in September of 2017. Baseline water quality statistics have <br />been provided in Appendix El of the 2010 AHR. <br />NPDES 005 (NPDES5). <br />This sediment pond is located in the north mining area on a tributary to <br />Dry Creek referred to as the 005 Gulch. Mining in this basin started in <br />November 1992. Construction of this pond was completed in July 1992 and <br />the first discharge occurred on April 22, 1993. This pond was dredged in <br />the summers of 1998 and 2001. The water year average flows values since <br />this pond began to discharge are: <br />2017 <br />0.010 <br />cfs <br />(monthly <br />measurements) <br />2016 <br />0.253 <br />cfs <br />(monthly <br />measurements) <br />2015 <br />0.012 <br />cfs <br />(monthly <br />measurements) <br />2014 <br />0.033 <br />cfs <br />(monthly <br />measurements) <br />2013 <br />0.044 <br />cfs <br />(monthly <br />measurements) <br />2012 <br />0.003 <br />cfs <br />(monthly <br />measurements) <br />2011 <br />0.214 <br />cfs <br />(monthly <br />measurements) <br />2010 <br />0.018 <br />cfs <br />(monthly <br />measurements) <br />2009 <br />0.060 <br />cfs <br />(monthly <br />measurements) <br />2008 <br />0.083 <br />cfs <br />(monthly <br />measurements) <br />2007 <br />0.038 <br />cfs <br />(monthly <br />measurements) <br />2006 <br />0.038 <br />cfs <br />(monthly <br />measurements) <br />2005 <br />0.021 <br />cfs <br />(monthly <br />measurements) <br />2004 <br />0.017 <br />cfs <br />(monthly <br />measurements) <br />2003 <br />0.026 <br />cfs <br />(monthly <br />measurements) <br />2002 <br />0.016 <br />cfs <br />(monthly <br />measurements) <br />2001 <br />0.018 <br />cfs <br />(monthly <br />measurements) <br />2000 <br />0.024 <br />cfs <br />(from monthly <br />measurements as of 12/99) <br />1999 <br />0.057 <br />cfs <br />(weekly measurements) <br />1998 <br />0.110 <br />cfs <br />11 <br />17 <br />