Laserfiche WebLink
- 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 (CDOH, 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 />were exceeded. Given in parenthesis is the source and use of each <br />standard. <br />Parameter <br />pH <br />Fluoride (CDOH, irrigation) <br />Iron (CDOH, irrigation) <br />Manganese (CDOH, irrigation) <br />Selenium (CDOH, irrigation) <br />of Wells / # of excursions <br />1/1 <br />2/2 <br />1/2 <br />4/5 <br />1/1 <br />The high fluoride values at Wells YWC33 and YWCU33 are most likely a <br />natural condition associated with a sodium bicarbonate type water. It is <br /> <br />i <br />• <br />6 <br />