TABLE OF CONTENTS 



Page 



LETTER OF TRANSMITTAL i 



TABLE OF CONTENTS ii 



1987 HIGHLIGHTS V 



INTRODUCTION 1 



POPLAR RIVER POWER STATION 4 



Operations 4 



Construction 5 



Mining 5 



SURFACE WATER QUANTITY 7 



Streamf low 7 



Quality Control 8 



Reservoir Storage 9 



Apportionment 9 



Minimum Flows 9 



On-Demand Release 11 



SURFACE WATER QUALITY 12 



East Poplar River 12 



Total Dissolved Solids 13 



Boron 15 



Other Water Quality Variables 17 



Girard Creek and Cookson Reservoir 17 



Quality Control 20 



GROUND WATER QUANTITY 21 



Saskatchewan 21 



Coal Mine Dewatering 21 



Water Levels 22 



Montana 22 



GROUND WATER QUALITY 25 



Saskatchewan 25 



Water Quality in the Tills 25 



Water Quality in the Empress Gravels 27 



Montana 29 



ASH LAGOON QUALITY AND QUANTITY 34 



AIR QUALITY 37 



Saskatchewan 37 



Montana 41 



