- 64 - 



Locations 26. 27. and 28 (South of Cell #3) 



Piezometer C774B is in the oxidized till at location 26 and piezometer 

 C775A is in the oxidized till at location 27. TDS have shown no con- 

 sistent changes for these piezometers as noted in Figure 51. B concen- 

 trations have appeared to decrease with time for C775A as show in Figure 

 52 . CI concentrations as indicated in Figure 53 for both piezometers, 

 have been steady. 



Piezometer 775D is in the Empress Gravels at location 28. TDS, as shown 

 in Figure 54, have been steady since 1987 after a significant increase 

 from 1985 and 1986 results. CI shows trends similar to TDS as noted in 

 Figure 55. B results seem to be decreasing slightly as shown in Figure 

 56. Other water quality parameters show no significant changes. 



7000 T 

 6000 - 



5000 y 



< 4000 



E 



S 3000 

 2000 



1000 



f ^» 



3/29/86 



^ l - 



^H 



XT 



8/11/87 12/23/88 5/7/90 

 SAMPLE DATE RANGE 



- C774B 



- C775A 



9/19/91 



Figure 51. — TDS in till piezometers C774B and C775A. 



