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8 <br /> Third grader 7984 Grourbd r for Monitooft RopoR Ban <br /> 900 South Cherokee Lana Lod, Caldomm , <br /> GROUNDWATER SAMPLING AND ANALYSES <br /> Groundwater samples were collected from six 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 February 1992 to date are summarized in Table 2 Historic analytical <br /> data are presented as an Attachment Figure 3 is a distribution map of benzene in groundwater <br /> based on the current data The laboratory report and chain-of-custody form for the current <br /> sampling event are attached Benzene concentrations remain nondetectable in wells MW-27, <br /> MW-28 and RW-1 Benzene concentrations decreased in wells MW-29 and RW-2, and increased <br /> in well MW-30 <br /> A copy of this quarterly monitoring report should be forwarded to the following parties <br /> Ms Linda Turkette <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 /> 94.8953 QMR 2 <br />