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A water-level decline in well 16, located to the west in the Middle Fork 

 of the Poplar drainage, of approximately 5 feet is not explainable at 

 this time. 



Other wells being monitored (4, 8, 9, 11 and 18) which includes two in 

 the Fox Hills-Hell Creek aquifer, have shown no trends in water-level 

 change . 



GROUND WATER QUALITY 

 Saskatchewan 



Ground water sampling continued in 1990 at the locations specified in the 

 Technical Monitoring Schedule. The ground water quality and water levels 

 were compared to historical data for each of the piezometers in the 1990 

 Monitoring Schedule. 



A number of graphs are presented for total dissolved solids, chloride, 

 boron, and water level measurements to illustrate the results of moni- 

 toring to date. Chloride was selected because it is a conservative 

 constituent in ground water systems and boron because it is a significant 

 contaminant in the ash lagoon waters. A statistical trend analysis was 

 performed on selected parameters. The following discussion of ground 

 water quality is organized by piezometer locations relevant to the ash 

 lagoon . 



West Side of Lagoon 



Location 8a (West of Cell #1) 



Piezometers, C726A and C726C are completed in the till. There have been 

 no significant water quality changes in these piezometers. A plot of 



