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,N July 28, 1988 AGS Job No. 38012-2 <br /> ' Former UNOCAL Service Station, Stockton, California <br /> r„.t <br /> TABLE 4 <br /> GROUND-WATER ELEVATION DIFFERENCES <br /> MONITORING WELLS <br /> Former UNOCAL Service Station No. 2859 <br /> 1665 Pacific Avenue <br /> Stockton, California <br /> MONITORING STATIC WATER LEVEL <br /> WELL TOP OF CASING WATER BELOW BELOW <br /> NUMBER (FEET BELOW DATUM) LEVEL DATUM MW-3 <br /> June 24, 1988 <br /> MW-1 0.94 29.88 30.82 0.12 <br /> MW-2 0,41 30.37 30.78 0.08 <br /> MW-3 0.00 30,70 30.70 0.00 <br /> June 29, 1988 <br /> MW-1 0.94 30.11 31.04 0.09 <br /> MW-2 0,41 30.61 31.02 0.07 1 <br /> Mi-3 0.00 30.95 30.95 0.00 <br /> Measurements in feet <br /> Static water level measured in feet below top of casing <br /> Datum is elevation corresponding top of casing for well MW-3 <br /> contamination below laboratory limits of detection. Borings B-1 <br /> and B-3 were drilled at the north and west margins of the site, <br /> respectively. A soil sample from immediately above the ground <br /> water surface in boring B-2 contained 28 parts per million (ppm) <br /> TPH and 0.55 ppm benzene. Water from monitoring well <br /> MW-1 contained levels of TPH and BTEX below laboratory detection <br /> --- "- <br /> limits. Water from inanitorng-well-MW-3 contained 0.0010-ppm -- - -- - -- <br /> 16 <br /> ,4pav/ied �eo�'yste�ne <br />