- 25 - 



(a) Boron-Three Month Moving Flow-Weighted Concentration 



from sample analyses 

 from regression 



4.0-- 

 S.B-- 

 S.S-- 

 S.4-- 



s.a- 



s.o- 



S.8- 



2.S- 



2.4- 



a.a-- 



2.0- 



■-- 



g ' 



(b) Boron Five-Year Moving Flow-Weighted Concentration 



Long-Term Objective (2.6 mg/L) 



Figure 6. East Poplar River at International Boundary: 



(a) Boron Three-Month Moving Flow-Weighted Concentration, 



(b) Boron Flve-Year Moving Flow-Weighted Concentration. 



