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exist in the Sage Creek basin. Well YOV29, prior to 1998, never had <br />enough water for sampling. However, subsequent water levels in this well <br />had increased, and three water samples were collected in 1998 and 1999. <br />In May 2000 this well went dry and continues to be dry. Well YOV30 <br />displays a decreasing TDS trend. <br />- Wadge Coal. Well YW28 monitors coal seam water quality in the Annand <br />Draw basin. It displays a slightly increasing TDS trend. Wells YW29 and <br />30 exist in the Sage Creek basin. Well YW29 displays a stable TDS trend. <br />Well YW30 recently displays a stable TDS trend. <br />- Wadge Underburden. well YWU28 monitors underburden water quality in <br />the Annand Draw basin. It displays an increasing TDS trend. Wells YWU29 <br />and 30 exist in the Sage Creek basin. Well YWU29 displays a stable TDS <br />trend. Well YWU30 displays an increasing TDS trend. <br />- Wolf Creek Coal and Underburden. As of September 2002, Well YWC33 <br />monitors the Wolf Creek coal water quality in the Sage Creek basin. <br />This well displays an increasing TDS trend. Mining of this seam began in <br />November 2002. Well YWCU33 now monitors the Wolf Creek underburden water <br />quality in the Sage Creek basin. It displays a decreasing TDS trend. <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, November 2004). <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/1 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 the number of <br />exceedences out of the total number of samples (i.e., 1/2 indicates one <br />exceedence out of two samples). Below is a summary of standards that <br />5 <br />