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Sump in the fall of 2011. Its TDS plot of previous data displayed a <br />decreasing TDS trend (SF = 0.5). <br />- Spoil Springs 6 and 10. These springs exist in the Wolf Creek coal <br />spoils. Spoil Spring 6 exists along the northwest edge of the Wolf Creek <br />pit and exhibits a decreasing TDS trend. Spoil Spring 6A monitors the <br />same drainage downstream where it meets the haul road. Monitoring at 6A <br />is not a PSCM requirement. This site was not checked in 2012, but was <br />checked in 2013, October, May, and August 2014 with no flow observed. <br />Spoil Spring 10 was discovered in 1993. It exists along the southwest <br />edge of the spoils in the vicinity of the Wolf Creek pit underdrain, and <br />is normally sampled at the haul road culvert. The drainage channel that <br />this spring discharges into was rerouted in the summer of 2012. No flow <br />at this location has been observed since then until May 2014. It <br />displays a slightly increasing TDS trend, with the peak TDS value <br />occurred in May 2006. <br />Comparison of Surface Water Quality to Water Use Standards. PSCM has <br />compiled a list of surface water standards for agricultural uses (Table <br />10) . This list is composed of CDPHE surface water agricultural use <br />standards (CDPHE, Reg.31, November 2009). <br />Table 11 provides a comparison of all surface water quality data <br />(including spoil springs) this year to agricultural standards. This <br />Paradox database generated table does not include the units of <br />concentration (mg /l or ug /1) for each parameter. The units used for each <br />parameter are the same as those listed on the standards table (Table 10) <br />and are also the same as those used in the water quality reports. The <br />frequency column on Table 11 indicates, in this order: uncensored, that <br />is, the number of exceedances above the Method Detection Limit (MDL) / <br />the number of exceedances between the MDL and the Practical Quantitation <br />Level (PQL) / censored, that is, the number of sample values below the <br />MDL but the MDL was higher than the standard / the total number of <br />samples. Below is a summary of standards that were exceeded. Given in <br />parenthesis is the source and use of each standard. Although the CDPHE <br />IG <br />