Laserfiche WebLink
- Wolf Creek Coal. Mining of the Wolf Creek coal seam began in October <br />2003. Two wells monitor the water quality in this coal seam. Both <br />existed in the II-W South area. Monitoring at Well WWC4 was resumed in <br />Suly 1997 after being discontinued in June 1985. A casing obstruction in <br />the well casing has prevented sampling since October 2001. Due to safety <br />concerns because of its proximity to the highwall, WWC4 was abandoned in <br />August 2003. Well WWC24 was drilled in August 2001 in the II-W South <br />area. Only five samples were collected. This well failed due to a <br />landslide that occurred in April 2003. A replacement well will be <br />drilled in 2004. <br />- Wolf Creek Overburden/Underburden. Wells WWCOV24 (overburden) and <br />WWCU24 (underburden) were drilled in August 2001 in the II-W South area. <br />Only five samples were collected for each well. These wells failed due <br />to a landslide that occurred in April 2003. Replacement wells will be <br />drilled in 2004. <br />- Trout Creek Sandstone. Well WTC201 is used as the water supply well <br />for the mine facilities. It displays a slightly increasing 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, March 1999). <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 o£ samples (i.e., 2/2 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 />10 <br />