(a) 



- 23 - 

 TD8 Three-Month Moving Flow-Weighted Conoentration 



IBOOx 

 ISOO 



Short-Term Objective (1600 mo/O 



from sample analyses 

 from regression 



isooj (b) jDS Five-Year Moving Flow-Weighted Concentration 



UOO' 



iioo-f- 



1000 

 B00-- 

 800-- 

 700- - 

 600- - 



Long-Term Objective (1000 mg/L) 



Figure 4. East Poplar River at International Boundary: 



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



(b) TDS Five-Year Moving Flow-Weighted Concentration. 



