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f <br /> (' Third Quarter 1996*round Water Monitoring Report,Beacon#474 <br /> (�®+, 3440 East Main Avenue,Stockton,California <br /> Pape 2 <br /> I <br /> I <br /> GROUND WATER SAMPLING AND ANALYSES <br /> Ground water samples were collected from three monitoring wells. All samples were analyzed for .; <br /> concentrations of: <br /> r <br /> 0 TPH, as gasoline, by modified EPA Method 8015. <br /> • BTEX by EPA Method 602. <br /> Analytical results collected since December 1993 are summarized in Table 2, Figure 3 illustrates the <br /> inferred distribution of benzene in ground water based on the current data. The laboratory report <br /> and chain-of-custody form for the current sampling event are contained in Attachment C. Benzene <br /> was not present at detectable concentrations in ground water samples collected from monitoring wells <br /> MW-1 and MW-3. Benzene concentrations increased in the sample collected from monitoring well <br /> MW-2 compared to prior sampling. <br /> A copy of this quarterly monitoring report should be forwarded to: <br /> Mr. Michael Inform <br /> Environmental Health Division <br /> San Joaquin County Public Health Services <br /> Post Office Box 2009 <br /> Stockton, California 95201 <br /> Mr. Gordon Boggs <br /> California Regional Water Quality Control Board <br />{ Central Valley Region <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3098 <br /> 1 <br /> I <br /> 3 <br /> 1 <br /> i <br /> EI Dorado Environmental, Inc. <br />