TABLE OF CONTENTS 



Page 



LETTER OF TRANSMITTAL i 



TABLE OF CONTENTS ii 



1988 HIGHLIGHTS v 



INTRODUCTION 1 



POPLAR RIVER POWER STATION 4 



Operations 4 



Construction ..... 5 



Mining 5 



SURFACE WATER QUANTITY 6 



Streamflow 6 



Quality Control 7 



Reservoir Storage 7 



Apportionment 8 



Minimum Flows 8 



On-Demand Release 9 



SURFACE WATER QUALITY 10 



East Poplar River 10 



Total Dissolved Solids 11 



Boron 13 



Other Water Quality Variables 14 



Girard Creek and Cookson Reservoir 17 



Quality Control 17 



Review of Flow-Weighted Objectives 18 



GROUND WATER QUANTITY 20 



Saskatchewan 20 



Coal Mine Dewatering 20 



Water Levels 21 



Montana • 21 



GROUND WATER QUALITY .... 24 



Saskatchewan 24 



Water Quality in the Tills 24 



Water Quality in the Empress Gravels 26 



Montana 28 



ASH LAGOON QUANTITY AND QUALITY 32 



AIR QUALITY 35 



Saskatchewan 35 



Saskatchewan Environment 35 



Saskatchewan Power Corporation 37 



Montana 38 



REFERENCES CITED 39 



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