- 61 - 



Locations 2b and 2c (north of the Polishing Pond) 



Piezometer C718 and C719 at location 2b and 2c, respectively, are in the 

 till. TDS have increased slightly in C719 and have been steady in C718. 

 CI results have been decreasing in C719 and steady in C718 as indicated 

 in Figure 47. C719 has shown an increasing trend for sulphates and also 

 an increase in uranium results until 1985 with a steady trend since then. 



160 i 

 140 } 

 120 T 

 100 



80 



60 



40 



20 







10/6/80 





A 



* . \ 



D-C 



■ C719 



-a C718 



L 



\ r 



j-LHJ 



2/18/82 7/3/83 11/14/84 3/29/86 8/11/87 12/23/88 5/7/90 9/19/91 

 SAMPLE DATE RANGE 



Figure 47. — Chloride in till piezometers C718 and C719 



Locations 24. 25. and 26 (North of Cell 3) 



Piezometers C714A and C714D in the till are at locations 24 and 25 

 respectively. TDS have increased in C714A and have been steady in C714D 

 as shown in Figure 48. Other water quality parameters have shown no 

 consistent changes. 



