POPLAR RIVER BILATERAL MONITORING COMMITTEE 



Department of State Department of External Affairs 



Washington, D.C., United States Ottawa, Ontario, Canada 



Governor' s Office Saskatchewan Environment and 



State of Montana Public Safety 



Helena, Montana, United States Regina, Saskatchewan, Canada 



Ladies and Gentlemen: 



During 1990, the Poplar River Bilateral Monitoring Committee continued to fulfill 

 the responsibilities assigned by the governments under the Poplar River Cooperative 

 Monitoring Arrangement dated September 23, 1980. Water quantity, water quality, 

 and air quality relevant to the International Boundary were monitored in accordance 

 with the 1990 Technical Monitoring Schedule. The monitoring data were exchanged on 

 a quarterly basis. 



This annual report is the tenth of a series covering the period 1981-90. The 

 report summarizes environmental conditions in the basin during 1981-90 and dis- 

 cusses Committee activities for 1990. Conditions are compared to guidelines for 

 specific parameter values that were developed by the International Joint Commission 

 under the 1977 Reference from Canada and the United States. References are made to 

 State, Provincial, or Federal standards or objectives where these are relevant. 

 After examination and evaluation of the monitoring information for 1990, the 

 Committee finds that the measured conditions meet the recommended objectives. 



In March 1991, the three year extension of the Cooperative Monitoring Arrangement 

 expired. It is respectfully suggested that the Monitoring Arrangement be extended 

 until the water apportionment and the water-quality objectives are formally adopted 

 by the governments or until such time that the governments have finalized arrange- 

 ments for another body to monitor developments in the Poplar River basin. 



Herein is the tenth annual report of the Poplar River Bilateral Monitoring Com- 

 mittee. 



Yours sincerely, 



<y.)K- \\A^^Cfcr 



J. R. Knapton R. A. Halliday 



Chair, United States Section Chair, Canadian Section 



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A. Wittich D. D. Nargang 



Member, United States Section Member, Canadian Section 



