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CRO <br /> Saoond QuaRar 1905 Groundwater Monh*dnq Repot 1 <br /> 3440 East Main Avenue.Stockton.California <br /> GROUNDWATER SAMPLING AND ANALYSES <br /> Groundwater samples were collected from three wells. All samples were analyzed for <br /> concentrations of: <br /> • TPH, as gasoline, by modified EPA Method 8015. <br /> • BTEX by EPA Method 602. <br /> Analytical results from December 1993 to date are summarized in Table 2. Figure 3 is a <br /> distribution map of benzene in groundwater based on the current data. The laboratory report and <br /> chain-of-custody form for the current sampling event are attached. Benzene concentrations <br /> remain nondetectable in wells MW-1 and MW-3. Concentrations decreased in well MW-2 <br /> compared to prior sampling. <br /> A copy of this quarterly monitoring report should be forwarded to the following parties: <br /> Mr. Michael Infurrna <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 /> Central Valley Regional Water Quality Control Board <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3098 <br /> i <br /> 9546-0021.474-2.QMR 2_ <br />