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~~ data for each well (when available) is presented in Appendix C1. On this <br />statistics report, "censored data" refers to analytical values that were <br />below the detection limit, which were censored from the min/max/mean <br />calculations. The time frame for baseline conditions is listed under <br />"conditions specified" at the bottom of each page. <br />- Alluvium. One well, YAAL14, monitors water quality in the Annand Draw <br />alluvium. TDS values for this well display an increasing trend, with the <br />peak TDS occurring in 1998. <br />Two wells, YGAL15 and 16, monitor water quality in the Grassy Creek <br />alluvium. Well 15 is located on Grassy Creek below the confluence of the <br />NPDESII tributary. It displays an increasing TDS trend. Well 16 is <br />located immediately below NPDESII on a Grassy Creek tributary. It <br />displays an increasing TDS trend. <br />Four wells; YSAL1, 3, 8, and 12; monitor water quality in the Sage Creek <br />alluvium. We11 1 is the furthest downstream well. It displays an <br />increasing TDS trend. Well 3 is upstream of Well 1, and is located along <br />Sage Creek, just below the discharge from NPDE512. St displays a stable <br />TDS trend (SF = 0.5). Well 8 is upstream of Well 3, and is upstream of <br />the current mining area. It displays an increasing TDS trend. We11 12 is <br />the furthest upstream well, and is upgradient of all mining. Pt displays <br />an increasing TDS trend. <br />- Wadge Overburden. Well YOV28 monitors overburden water quality in the <br />Annand Draw basin. It displays a slightly increasing TDS trend. Wells <br />YOV29 and 30 exist in the Sage Creek basin. Well YOV29, prior to 1998, <br />never had enough water for sampling. However, subsequent water levels in <br />this well had increased, and water samples were collected in 1998 and <br />2999. In May 2000 this well went dry and continues to be dry. Well YOV30 <br />displays a decreasing TDS trend. <br /> - Wadge Coal. Well YW28 monitors coal seam water quality in the Annand <br />.' Draw basin. It displays a stable TDS trend. Wells YW29 and 30 exist in <br />5 <br />