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Quarterly Ground-Water Monitoring May 10, 1990 <br /> Beacon Station No. 502, Lodi, California AGS 86091-7 <br /> r <br /> TABLE 1 <br /> CUMULATIVE RESULTS OF LABORATORY ANALYSES <br /> Beacon Station No. 502 <br /> 35 North Cherokee Lane <br /> Lodi, California <br /> (page 2 of 2) <br /> Well Number Ethyl-- Total Depth to <br /> and Date Benzene Toluene benzene Xylenes TPH Water <br /> MW-4 <br /> 11/21/86 0.024 0. 157 0.003 0.022 0.305 <br /> 01/14/88 0. 0528 0.0041 0.0022 0. 0188 0.46 43.37 <br /> 06/07/88 0.0021 0.0294 0.0044 0.0208 1.07 44.70 <br /> 09/07/88 0.0121 0.0066 0.0015 0.0111 0.07 47.72 <br /> 12/06/88 0.0128 0.0060 0.0031 0. 0167 0.26 48.06 <br /> 03/03/89 0.0144 0.0041 0.0024 0. 03.40 0.46 47.62 <br /> 07/21/89 0.0150 0.0059 0.0036 0. 0440 <5.0 50.32 <br /> 09/28/89 0.048 0.0025 <0.0005 0.024 0.210 52.48 <br /> 12/15/89 '0.0005 <0.0005 <0.0005 <0. 0005 <0.050 53 . 16 <br /> 03/19/90 <0.0005 <0. 0005 <0.0005 <0.0005 <0.050 50.32 <br /> NW-5 <br /> 03/23/87 0.0034 0.0039 0.0007 0. 0043 0.0488 41.82 <br /> 01/15/88 <0. 0005 0.0007 <0.0005 <0. 0005 0.06 46.77 <br /> 06/07/88 <0. 0005 0.0021 0. 0009 0.0070 0.06 46.77 <br /> ► 09/07/88 <0.0005 <0. 0005 <0.0005 <0. 0005 0.03 49.88 <br /> 12/06/88 <0.0005 <0.0005 <0.0005 <0. 0005 0. 02 50. 11 <br /> 03/03/89 <0.0005 <0.0005 <0.0005 0. 0020 0.07 49.61 <br /> 07/21/89 0.0019 0.0032 0.0012 0. 00700 <5.0 52.60 <br /> 09/28/89 <0.0005 <0.0005 <0.0005 <0. 0005 <0.050 54.38 <br /> 12/14/89 <0.0005 <0.0005 <0.0005 <0.0005 <0.050 54.40 <br /> 03/19/90 <0.0005 <0.0003 <0.0005 <0. 0005 <0.050 52.60 <br /> Concentrations given in parts per million <br /> TPH = Total petroleum hydrocarbons as gasoline <br /> TPH was analyzed as total volatile hydrocarbons <br /> for 12/04/86 and 05/14/87 samples <br /> NA = Not analyzed <br /> < = Below detection limit for analytical method used <br /> * Depth to water not measured in these wells <br />