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monitoring requirement. This site was field verified in June 2015 with <br />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. It displays a slightly <br />increasing TDS trend, with the peak TDS value occurred in May 2006. <br />Comparison of Surface Water Quality to Water Use Standards. <br />PSCM has compiled a list of surface water standards for agricultural <br />uses (Table 10 in Appendix A). This list is composed of CDPHE surface <br />water agricultural use standards (CDPHE, Reg.31, November 2009). <br />Table 11 in Appendix A provides a comparison of all surface water <br />quality data (including spoil springs) this year to agricultural <br />standards. The Paradox database generated table does not include the <br />units of concentration (mg/l or ug/1) for each parameter. The units used <br />for each parameter are the same as those listed on the standards table <br />(Table 10) and are also the same as those used in the water quality <br />reports. The frequency column on Table 11 indicates, in this order: <br />uncensored, that is, the number of exceedances above the Method <br />Detection Limit (MDL) / the number of exceedances between the MDL and <br />the Practical Quantitation Level (PQL) / censored, that is, the number <br />of sample values below the MDL but the MDL was higher than the standard <br />/ the total number of samples. Below is a summary of standards that were <br />exceeded. Given in parenthesis is the source and use of each standard. <br />Although the CDPHE does not differentiate between livestock and <br />irrigation uses in their surface water agricultural standards, they have <br />done so in their similar ground water agricultural standards (see Table <br />5). For the sake of discussion, PSCM chooses to use those ground water <br />use standards classifications (livestock or irrigation) for surface <br />water use evaluation. <br /># of Sites / # of Excursions <br />Manganese (CDPHE irrigation) 4/9 <br />19 <br />