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• GROUND WATER Table G-85 is a listing of average water level, pH and conductivity for the piezometers and wells. Sampling was reduced to monthly water levels and annual field analysis for the coal I' p• `,,, W % ~ sir., -.,. ..~ ~•~na seam and alluvial iezometers and wells. '~~4L .y ~,.~ s. M, ~_~ ~w,. The average water levels in the coal seam wells and piezometers were higher again this year. The pH and conductivity of D-1 was within the range of previous samples. The pH of E-1 was similar to previous samples but the conductivity has been consistantly dropping. The water in this well may be more related to surface water than water moving up dip in the coal seam. The pH and con- ductivity of F-1 was consistant with previous samples. The water levels in the alluvial wells were both higher and lower. Some consistancy within areas might be a reflection of the irrigation practices near by. A-9 and A-11 piezometers were • sampled for field information for this first time this year. The conductivity of A-9 is lower than normally found in the alluvial ground water but may have been the result of irrigation water standing 10-feet away. The four refuse piezometers that have water showed a lower water surface elevation this year than last. Diagram G-85-1 shows the piezometric surface compared to surface contours. The average pH was lower this year than last on the three piezometers listed. R-1 again showed a sharp drop in conductivity in the early spring as well as a slight increase in water level. The timing of this drop may have to do with spring thaw rather than spring high waters. The average conductivity on R-1 and R-3 increased slightly since last year and R-6 decreased. The average water level for the pond piezometers was close to last year's levels. Diagram G-85-2 shows a cross section of • the #1 pond embankment and related elevations. The high and low water levels is shown for P-1 and P-3. The water level in the