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well was taken in June 2011. This well was abandoned on October 2, 2012. <br />A new replacement well, CTC87, was drilled close to Well STC5 in 2011. <br />As it was the drinking water supply for the PSCM, it was sampled per its <br />CDPHE drinking water permit (CO- 254705) . It is no longer a public <br />drinking water system and the last sample was taken September 2012. It <br />displays a decreasing TDS trend. There are no sampling requirements in <br />the CDRMS permit for this well. <br />- spoils. One well monitors the spoils above NPDES Pond 002. Well 27 <br />displays a stable TDS trend (SF 0.5), with TDS values peaking in 1998. <br />Well 61 is located a half mile south of the Pecoco Pond. It displays a <br />stable TDS trend (SF 0.5). Well 62 is located above NPDES 004 Pond. It <br />displays a decreasing TDS trend. <br />Comparison of Ground Water Quality to Water Use Standards. The PSCM has <br />compiled a list of ground water standards for agricultural uses (Table <br />5) . This list is composed of Colorado Department of Public Health and <br />Environment (CDPHE) ground water standards (CDPHE, Reg. 41, May 2008). <br />Table 6 provides a comparison of ground water quality data collected <br />this year to agricultural standards. This Paradox database generated <br />table does not include the units of concentration (mg /l or ug /1) for <br />each parameter. The units used for each parameter are the same as those <br />listed on the standards table (Table 5) and are also the same as those <br />used in the water quality reports. The frequency column on Table 6 <br />indicates, in this order: uncensored, that is, the number of exceedances <br />above the Method Detection Limit (MDL) / the number of exceedances <br />between the MDL and the Practical Quantitation Level (PQL) / censored, <br />that is, the number of sample values below the MDL but the MDL was <br />higher than the standard / the total number of samples. Below is a <br />summary of standards that were exceeded. Given in parenthesis is the <br />source and use of each standard. <br />0 <br />