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h� <br /> Y <br /> May 10, 1987 AGS 86103-2 <br /> Cardlock Station #27 - Stockton, California <br /> monitoring wells . The elevation differences were combined with <br /> measurements of the static water levels made with an electronic <br /> water level indicator to calculate the water level elevation <br /> ,u <br /> differences between the wells (Table 2) . <br /> . c <br /> V• 1+ <br /> } <br /> TABLE 2 <br /> GROUND WATER ELEVATION DIFFERENCES <br /> MONITORING WELLS <br /> CARDLOCK STATION #27, STOCKTON, CALIFORNIA <br /> MONITORING TOP OF CASING STATIC WATER LEVEL <br /> st WELL (FEET ABOVE DATUM) WATER BELOW BELOW <br /> NUMBER LEVEL* DATUM MW--2 <br /> 3/16/87 <br /> MW-1 0.00 38. 38 38. 38 0.13 <br /> MW-2 0. 55 38 . 80 38.25 0.00 <br /> f MW-3 1.00 39. 29 38.29 0.04 <br /> 4/13/87 <br /> ; - MW-1 0.00 40. 01 40.01 0.04 <br /> MW-2 0.54 39.97 39. 97 0. 00 <br /> MW-3 1.00 40. 98 39.98 0.01 <br /> MW-4 0.71 40.30 39. 59 -0.38 # <br /> Measurements in feet <br /> * Static water level measured in feet below top of casing <br /> Datum is elevation corresponding top of casing for MW-1 <br /> � # Data for MW--4 not consistent with other data <br /> These calculations were used to construct a Ground Water <br /> Potentiometric Surface Map across the site (Plate P-3) . This map <br /> t <br /> indicaes a <br /> � Y gradient of approximately 0. 34 feet per 100 feet <br /> k _ <br /> (18.0 feet per mile) on March 16, 1987, and 0.08 feet per 100 <br /> feet (4. 3 feet per mile) on April 13, 1987, _ The gradient implies <br /> BQ011002 <br /> -- �4v�o%led GeoSrstems <br />