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exhibited a decrease is water levels. Wells WdV4-1 and 4-2 are is the proposed • <br />II-W South ExDaaeioa area. Monitoring nt these two walla was resumed in 1997 <br />after being discontinued in 1985. <br />- Wedge Coal. The six Wedge coal wells monitored exhibit the same typical <br />seasonal variations ae the previous aquifers discussed. Due to low aquifer <br />tranemieeivitiee (range 0.07 to 0.36 £tZ/day), water sampling may meek normal <br />water level fluctuations. Wells WW3, WW4, 14 and 17 all exhibit as increase in <br />water levels over the Daet several yenra. Wells WW16 and 18 have recently <br />displayed decreasing water levels. <br />- Wolf Creek Coal. walla WWC3 sad WWC4 both exhibit on increase is water levels <br />over the yeat several years. Water lavala at Well WWC17 decreased this year <br />after several years of increase. <br />Ground Water Level Sum mary. Moat aquifers at Seneca II-W exhibit a typical <br />seasonal fluctuation. Water levels are highest after the eyriag runoff, which <br />recharges the aquifer. O£tea, bedrock aqulfar s exhibit a lag time between • <br /> <br />eDriag runoff sad highest water levels. Water levels than decrease ee late <br />summer or fall approaches. <br />Water Quality. Table 3, Summary of Ground water Monitoring Walla, describes the <br />wells that ware eamylafl, the saa~le frequency during this year, sad Bite <br />characterietice. Table 4 shows the grauad water parameter list used for all <br />walla. Analyses have bean performed by ACZ Laboratory in steamboat syringe, <br />Colorado since May 31, 1983. ACZ Laboratory performs all analyses by EPA or <br />equivalent methods. Samples nre delivered the day of collection to the lab in <br />an iced cooler. Monitoring frequencies £or groua8 water quality may be found is <br />ApDeadix 15-3a of the Seneca II-W PAP. <br />The following discussion of the analytical datn collected during the reyorting <br />period ie arranged by strata being monitored and coincides with the format (by <br />aquifer type) in which the analytical data are presented Sa ADDandix D. The <br />following discussion of water quality will limit itself to a deecriDtion of <br />total dissolved eolida (TDS). A separate section, Comparison of Ground Water • <br />4 <br />