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at Well WWC17 have been on the increase since 2000. Well WWC24 exists in <br />the south area, monitoring began in September 2001. This well failed due <br />to a landslide that occurred in April 2003. A replacement well will be <br />drilled in 2004. Water levels observed this year for all these wells, <br />except WWC17, fell within their historic ranges. <br />- Wolf Creek Underburden. Well WWCU24 monitors this stratum in the <br />south area. Monitoring began in September 2001. This well failed due to <br />a landslide that occurred in April 2003. A replacement well will be <br />drilled in 2004. <br />Ground Water Level Summary. Most aquifers at Seneca II-W exhibit a <br />typical seasonal fluctuation. Water levels are highest after the spring <br />runoff, which recharges the aquifer. Often, bedrock aquifers exhibit a <br />lag time between spring runoff and highest water levels. Water levels <br />then decrease as late summer or fall approaches. Wells WHAL6-1, 6-2, <br />WSAL12 and WW16 experienced the lowest water levels on record this year. <br />Wells WSAL14, WW14, WW17 and WWC17 experienced the highest water levels <br />on record this year. <br />Ground Water Quality. Table 3, Summary o£ Ground Water Monitoring <br />Wells, describes the wells that were sampled, the sample frequency <br />during this year, and site characteristics. Table 4 shows the ground <br />water parameter list used for all wells. Analyses have been performed by <br />ACZ Laboratory in Steamboat Springs, Colorado since May 31, 1983. ACZ <br />Laboratory performs all analyses by SPA or equivalent methods. Samples <br />are delivered the day of collection to the lab in an iced cooler. <br />Monitoring frequencies for ground water quality may be found in Appendix <br />15-3a of the Seneca II-W PAP. <br /> The following discussion of the analytical data collected during the <br /> reporting period is arranged by strata being monitored and coincides <br /> with the format (by aquifer type) in which the analytical data are <br /> presented in Appendix D. The following discussion of water quality will <br /> limit itself to a descript ion of total dissolved solids (TDS). A <br />5 <br />