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W Meteorological Station. This spring became part of the required <br />monitoring program in 2000. Its TDS plot indicates an increasing trend; <br />however, the peak value occurred in July 2011. <br />Spring S -50 is the discharge of the french drain that collects water <br />from the W -24 series monitor wells (located below Pond 16A) that failed <br />in 2003. This water was first sampled in September 2005. The W -24 wells <br />were finally abandoned in August 2007. The entire area around this <br />spring was regraded in 2012. Its TDS plot indicates a decreasing trend, <br />with the peak value occurring in August 2013. <br />Spring S -7 in an alluvial clearwell located adjacent to Hubberson Gulch. <br />It serves as the non - potable water supply at the Smith ranch. Due to the <br />taste and possible coliform contamination of the spring, bottled water <br />is used for drinking. Sampling at this spring was discontinued in 1990, <br />but was reestablished in 1999 since it is downstream of mining at the <br />Seneca II -W South area. Its TDS plot indicates an increasing trend; <br />however, the peak value occurred in September 2006. <br />The hydrology monitoring program at the Seneca II -W Mine requires a <br />spoil spring survey every year after the spring snowpack runoff. Spoil <br />Spring 1 (WSSPGI, not to be confused with WSPG1) was discovered in 1998 <br />above the NPDES 005 pond (D pit area). It existed approximately 800 feet <br />southeast of Well GW- S2W -14W. Its TDS plot indicates a recently <br />decreasing trend, with the peak occurring in June 2011. <br />Spoil Spring 2 (WSSPG2) was discovered in June 1999. It is located in <br />the main stream channel above Pond 006 adjacent to the oil well. Its TDS <br />plot indicates a recently decreasing trend, with the peak occurring in <br />July 2011. <br />Spoil Spring 3 (WSSPG3) was discovered in September 1999. It is located <br />immediately to the east of Pond 006. Its TDS plot indicates a slightly <br />increasing trend, with the peak occurring in July 2011. <br />19 <br />