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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 EC plot indicates an increasing trend. <br />0 <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 EC plot indicates a decreasing trend. <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 slightly increasing trend. <br />Spoil Spring 3 (WSSPG3) was discovered in September 1999. It is located <br />immediately to the east of Pond 006. Its EC plot indicates an increasing <br />Spoil Spring 4 (WSSPG4) was first sampled in 2003. It contains the <br />combined discharges of the backfilled A and B pits. It is sampled at the <br />outlet of the haul road culvert just above Pond 006. Its TDS plot <br />indicates an increasing trend. <br />Spoil Spring 5 (WSSPG5) was first samples in June 2006. It is located <br />just above the large culvert that feeds into Pond 016A. It was dry in <br />September. Only three samples have been collected so far. <br />trend. <br />Comparison of Surface Water Quality to Water Use Standards. SCC has <br />compiled a list of surface water standards for agricultural uses (Table <br />9). This list is composed of CDPHE surface water agricultural use <br />standards (CDPHE, Reg.31, May 2008). <br />Table 10 provides a comparison of this year's surface water quality to <br />agricultural standards. This Paradox database generated table does not <br />include the units of concentration (mg/l or ug/1) for each parameter. <br />The units used for each parameter are the same as those listed on the <br />19