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- wedge Coal. Six walla; YN7, 14, 18, 28, 29, and 30; monitor the wedge coal • <br />seam. well YW28 exists is the Anaand Draw basin, all others exist is the Sage <br />Creek basin. Due to the low aquifer traasmieeivitiae, eeaeoaal water level <br />fluctuations are much less pronounced than the alluvium and overburden, and are <br />often masked by water sampling effects. Most wells exhibited water levels this <br />year within their historic ranges, wall Y1418 was mined out is the winter of <br />1999/2000. well Yw2B (flowagradient of the 1996/99 mine pit in Aanend Draw) has <br />experienced decreasing water levels since October 1996. la the Sege Creek <br />basin, water levels at wells Yw29 and 30 are increasing, while water levels at <br />wall Yw30 ere decreasing. <br />- wedge Uaderburdea. Five walla; YwU16, 17, 28, 29, anfl 30; moaitoi the wedge <br />vaderburdea. well YN02B exists is the Aannad Draw beeia, all others exist is <br />the Sage Creek basin. Moat of these wells do not exhibit any eigni£iceat <br />eeaeoaal variation, although some variation from year-to-year is evident. Moat <br />walla exhibited water levels thin year within their historic ranges. well Yw017 <br />was abaafloaed oa June 6, 2000 to make room for road conatruetion. ;11eo, it was <br />is as area that will be mined out. well YwU28 (downgradieat of the 1996/99 mine • <br />pit in aaaaafl arnw) has exDerieacad decreasing water levels from June 1996 to <br />September 1997, but has recently experienced an increase is water levels. Ia <br />the Sage Creak beeia, well YtaII30 has also experienced iaereasing water levels, <br />while well YwU29 has experienced a decrease is water levels mace May 1999. <br />- wolf Creek Coal sad Daflerburdea. One wall each monitors these two unite, <br />YwC31 and YwCD31. Hoth wells exist is the Saga Creek beeia. well YwC31 <br />exhibits very little eeaeoaal variation. Its water levels have been increasing <br />since 1995. well YwCD31 is normally dry. <br />Ground water puality. Table 4 shows the ground mater parameter list uaefl for <br />all well water samples. ]~pDeadix C provides all ground water quality data <br />collectafl during this reporting period, along with sampling remarks. 1lfter the <br />remarks is a statistic report reDreeeatiag baseline (i.e., preminiag) data for <br />each well (where applicable). Oa this statistics reDOrt, "censored data` refera~ <br />to analytical values that were below the detection limit, which were eeasored <br />from the min/max/mesa calculations. The time frame for baseline eoaditioae is • <br />listed wader ^coaditioae specified" nt the bottom of each Dage. The baseline <br />4 <br />