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Lennox Overburden. Two yells, YLOV3 and 4, monitor the Lennox overburden. Both wells are <br />flovinq and fitted with pressure gages. They both have tDe same period of monitorlaq <br />records as the two Lennox coal yells. <br />Wadqe Overburden. Nine wells; YOV1, 9, 15, 19, 22, and 27 to 30; monitor the Wadqe <br />overburden. Host wells exhibit typical seasonal fluctuations, although some lag time for <br />eha apriaq recDarge is observed. <br />Wadqe Coal. Tan wellsr YW2, 7, 14, 18, 21, 23, 26, and 2B to 30; monitor the coal. Due <br />to the low aquifer traasmissivitiee, seasonal water level fluctuations are much lees <br />pronounced than the alluvium and overburden, and are often masked by water samDllnq <br />effects. <br />Wadga OaderDUrden. Five wells; YWD16, 17, 2B, 29, and 30; monitor the Wadqe underburden. <br />None of these wells exDibrt any significant seasonal variation, although some variation <br />from year-to-year is evident. <br />• Wolf Creek Coal and OnderDUrden <br />One wall each monitors CDese YWC31 and <br />two units <br /> . , <br /> YWC031. Well YWC31 exhibits very little variation. Well YWCD31 is normally dry. <br />Ground Water quality. Table 4 shows the ground water yarameter list used Eor all well <br />water samples. Appendix C provides all water quality data collected during this reporting <br />period, along with samDliaq remarks. This is followed by a plot of TDS versus time for <br />the entire period of record. The regression line on this plot is generated by a method <br />known as LOWESS (Locally Weighted Scatterplot Smoothing). A smoothness factor of 1 (on a <br />scale of 0 to 1) was used, whicD gives maximum smoothing. Flaally, this plot is followed <br />by a table lasting historic TDS values and percent m111iequivalents for major ions. Water <br />quality data toz those wells no longer required to be sampled have also been included here <br />(four YSAL series wellsl. <br />Alluvium. One well, YAAL 14, monitors water quality in the Armand Draw alluvium. Four <br />wells, YGAL15 to 18, monitor water quality in the Grassy Creek alluvium. Four wellsl <br />YSAL1, 3, e, and 12; monitor water duality is the Saae Creek alluvium. <br />• <br />3 <br />