FIGURES 



Figure 2.1 Production History 1981 - 1991, Poplar River Power Station 5 



Figure 2.2 Fuel Consumption 1981 - 1991, Poplar River Power Station 6 



Figure 3.1 Discharge during 1991 Compared with the Median Discharge for 



1961-1990 for the Poplar River at the International Boundary 11 



Figure 3.2 Flow Hydrograph of the East Poplar River at the International Boundary 12 



Figure 3.3 TDS Concentrations for 1991 Grab Samples from East Poplar River 



at the International Boundary 15 



Figure 3.4 Three-Month Moving, Flow-Weighted TDS Concentration for 



East Poplar River at the International Boundary T5 



Figure 3.5 Five-Year Moving, Flow-Weighted TDS Concentration for East 



Poplar River at the International Boundary 17 



Figure 3.6 Sen Slope Estimate for TDS at East Poplar River at the International 



Boundary 17 



Figure 3.7 Boron Concentrations for 1991 Grab Samples from East Poplar 



River at the International Boundary 19 



Figure 3.8 Three-Month Moving, Flow-Weighted Boron Concentration for East 



Poplar River at the International Boundary 19 



Figure 3.9 Five-Year Moving, Flow Weighted Boron Concentration for East 



Poplar River at the International Boundary 20 



Figure 3.10 Sen Slope Estimate for Boron at East Poplar River at the 



International Boundary 20 



Figure 4.1 Cone of Depression in the Hart Coal Seam from Dewatering 



Activities as of December 1991 27 



Figure 4.2 Hydrographs for Selected Wells, 1979 to 1991 29 



Figure 4.3 TDS for Selected Discharge Points, 1990 and 1991 31 



Figure 4.4 Boron for Selected Discharge Points, 1990 and 1991 31 



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