22 20 -20 SOUTH BEACHES E DEEP MONITOR WELL 18 18 1550 1700 FEET C/-) J 16 C!) 14 _1 0 0 ---F ( 12 0 10 F 0 I 6 I I I I , AUG-88 JAN-89 JUL-89 JAN-90 JUL-90 JAN-91 JUL-91 JAN-92 DATE Figure 40. TDS values of the South Beaches well deep monitor zone (data from the DER Bureau of Drinking and Groundwater Resources).