- 53 - 



total dissolved solids (TDS) -vs-time is shown in Figure 35 for these 

 piezometers. Piezometer C726E, in the Empress Gravels, shows no 

 significant water quality changes. TDS-vs-time is plotted for this 

 piezometer in Figure 36. Water levels have decreased in C726E as shown 

 in Figure 37. This is consistent with water level results for 

 piezometers in the Empress Gravels at other locations. 



1400 



1200 



1000 



< 800 



E 



H 600 + 



400 



200 











C726C 

 C726A 



5/25/79 2/18/82 11/14/84 8/11/87 5/7/90 

 SAMPLE DATE RANGE 



1/31/93 



Figure 35. — TDS in till piezometers C726A and C726C, 



