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BLAINE 1680 ROGERS AVENUE <br /> TECH SERVICES SAN JOSE CA 95112-1105 <br /> (408)573-7771 FAX <br /> E.NT r)Hy (408)573-0555 PHONE <br /> � a <br /> September 28, 1998 <br /> SND pd�ye�` i <br /> GROUNDWATER MONITORING AND SAMPLING <br /> Third Quarter, 1998 <br /> at the Former Texaco Service Station <br /> 440 West Charter Way <br /> Stockton, CA <br /> This report presents the results of groundwater monitoring and sampling conducted by Blaine Tech <br /> Services, Inc on August 11, 1998 at the site referenced above (see Figure 1, Site Vicinity Map) Based <br /> on groundwater level measurements, the areal hydraulic gradient was estimated to be east The gradient <br /> map has been reviewed by a registered professional (see Figure 2, Groundwater Gradient Map) TPHg <br /> and benzene concentrations are shown on Figure 3 Tables 1 and 2 list historical groundwater monitoring <br /> data and analytical results, respectively Well MW-16 was dry, and therefore, not sampled Well MW-8 <br /> was also not sampled, as it was inaccessible due to a different lock on the gate <br /> The certified analytical report, chain-of-custody, field data sheets, and bill of lading are in the Appendix <br /> Equilon Enterprises LLC's Standard Operating Procedures may be found in the first quarter, 1995 <br /> monitoring report <br /> l <br /> Deidre Kerwin <br /> Operations Manager <br /> Blaine Tech Services, Inc <br /> DK ck <br />