14 



Figure 3.7: Boron Concentrations for 1995 Grab Samples from 

 East Poplar River at the International Boundary 



2.5 



B 

 o 1.5 



o 



1 U 



S 



1 — 



0.5 



01 -Jan 02-Mar 01 -May 30-Jun 29-Aug 28-Oct 27-Dec 



31-Jan 01-Apr 31-May 30-Jul 28-Sep 27-Nov 



1995 



Figure 3.8: Three Month Moving Flow-Weighted Boron Concentrations for East Poplar 

 River at the International Boundary 



AJ 

 76 



77 i 78 I 79 i 80 I 81 j 82 j 83 j 84 j 85 j 86 ; 87 j 88 ; 89 I 90 j 91 j 92 j 93 i 94 



i 1 I i i i I i i _! ! J i i ! ! I 



Time 



— from regression — from sample analysis 



