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monitors the Wolf Creek underburden water quality in the Sage Creek <br />basin. It displays a decreasing TDS trend with the peak value occurring <br />in August 2003. <br />Comparison of Ground Water Quality to Water Use Standards. SCC has <br />compiled a list of ground water standards for agricultural uses (Table <br />5). This list is composed of Colorado Department of Health ground water <br />standards (CDPHE, Reg. 41, May 2008). <br />Table 6 provides a comparison of ground water quality to agricultural <br />standards. This 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 5) and are also the same as those used in the water quality <br />reports. The frequency column on Table 6 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 in the 2015 water year. Given in parenthesis is the source and <br />use of each standard. <br />Parameter # of Wells / # of excursions <br />Cadmium (CDPHE, irrigation) 1/1 <br />Manganese (CDPHE, irrigation) 3/4 <br />PH 1/2 <br />Fluoride (CDPHE, irrigation) 2/4 <br />Lead (CDPHE, irrigation) 1/1 <br />One sample at one site YW30 had a cadmium value that was less than an <br />elevated detection limit (30 ug/l vs. a normal detection limit of 3 <br />ug/1), which was higher than the CDPHE standard of 10 ug/l. Likewise, <br />the same sample had a lead value that was less than an elevated <br />detection limit (200 ug/l vs. a normal detection limit of 20 ug/1), <br />5 <br />