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The Seneca II precipitation gaga measured 27.SC inrhas this year. This value is 8.29 <br /> inches (l2~) granter than the 1981-1997 average. <br />Ground Water <br />Water Levels. Water Level data era psesanted in >:..~ ..ai: H. Water level reports for date <br />collected since 1991 era presented immediately after the rater level hydrogsaph o! all <br />historic data for each respective roll in the same sppandiz. ey presenting all historic <br />data, trends related to seasonal and annual variability and possible mining related <br />impacts are more clearly evident. Tsble 3 (5~~~--~-*y o! Ground Water tonitoring walls) is <br />psaeanted as a reference tos the reader. No nor rolls rare drilled in 1997. Water level <br />measurements obtained in non-florinq walla are taken with rater level indicator, or in the <br />case o! a Par shallot alluvial rolls, directly from a steal tape. pressure readings (in <br />psi) obtsinad Isom florinq rolls with pressure gages era multiplied by 2.31 to obtain hand <br />in feet. For the sake of brevity, the prefix that precedes all cell names rill be dropped <br />throughout this report (except in the ease of nested wells with a similar numbarl. As an <br />example, Well SCALi6 rill be referred to as Well d6. <br />~ • Alluvium. The alluvial monitoring rolls era located along Cor Camp (Walls 06 and 69), <br /> Bond (wall 68), Glassy (Walls 33, 34, 70, and 71), and Little Grassy Creeks (walls 6, 31, <br /> 3U, and 32). Thaee walls ezhibit seasonal fluctuations in rater levels. The eprinq <br /> runoff-infiltration stimulates a rater level rise, and as the drier Tall season <br /> approaches, rater levels decline. Generally, rater levels rase shallower than normal this <br /> year due to high eprinq runofl. <br />Lenno: Overburdan/Wedge Overburdan. The four rolls completed in these formations (Walls <br />SLOC2, SOV21, 90VC1, and 90v62) exhibit normal seasonal variations, that is, lowest rates <br />levels in the fall and tinter, and highest in the late eprinq/early summer after the <br />eprinq runoff recharge event. This yeas, all cells except 9L042 displayed rater levels <br />that fell within their historic ranges. Thst roll had one refer level lower than normal. <br />Monitoring of Wall SOV21 (GW-521-LW I) in the fly nnh pit aces was 6iscontinued after the <br />May reading (sae "Introduction"). <br />Wedge Coal. Five tells monitoz Lhie seam. Walla 16 and 17 are in hydraulic communication <br />with the Wedge Impoundment (NFDES 002 Fond) because their rater locale change in response <br />• to a change in the pond's rater level. Wall 19 is a florinq roll fitted with a pressure <br />3 <br />