TABLE OF CONTENTS (ConLi.nued) 



Page 



Table 3 - Incompatibility of Analytical Results of Four 

 Parameters from the East Poplar River at the 

 International Boundary, September 12, 1984 10 



Table 4 - Recommended Water-quality Objectives and Exceedances 

 and the 1984 Sampling Program, East Poplar River 

 at the International Boundary 17 



Table 5 - 1984 Dewatering Rates from Coal Seam Dewatering Wells .19 



Table 6 - Calculated Seepage Rates from Ash Lagoons No. 1 



and No. 2 28 



Table 7 - Summary of Air Quality Monitoring Results during 1984 



in Montana 35 



Figure 1 - Hydrograph of Water Discharge of the East Poplar 



River at the International Boundary and Recommended 

 Minimum Flow 8 



Figure 2 - (a) Three-month Short-term Flow-weighted Concentration 

 for TDS, East Poplar River at the International Boun- 

 dary; (b) Five-year Long-Term Flow-weighted Concen- 

 tration for TDS, East Poplar River at the Inter- 

 national Boundary 13 



Figure 3 - (a) Three-month Short-term Flow-weighted Concentration 

 for Boron, East Poplar River at the International 

 Boundary; (b) Five-year Long-term Flow-weighted Con- 

 centration for Boron, East Poplar River at the 

 International Boundary 15 



Figure 4 - Cone of Depression in the Hart Coal Seam from 



Dewatering Activities as of December 1984 21 



Figure 5 - Total Dissolved Solids Concentrations, East Poplar 



River Monitoring Piezometers 24 



Figure 6 - Sulphur Dioxide Air Quality Data - Coronach Water 



Treatment Plant 32 



Annex 1 - Poplar River Cooperative Monitoring Arrangement, 

 Canada-United States. 



Annex 2 - Poplar River Cooperative Monitoring Arrangement, 

 Technical Monitoring Schedules, 1985, Canada- 

 United States 



Annex 3 - Metric Conversions 



- iii - 



