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1 <br /> Quarterly Groundwater Monitoring Report BSK Job No P92219 3 <br /> April 1995 May 10, 1995 <br /> Van Den Bergh Foods Page 5 <br /> Stockton Facility <br /> 1 <br /> CONCLUSIONS <br /> Analytical data indicate concentrations of TPH-D and BTEX in the groundwater are below <br /> laboratory detection limits in the samples collected from Monitoring Wells MW-4 and MW-6, <br />' located at the site <br /> TPH-diesel was detected in the groundwater sample from Well MW-5 at concentrations which <br />' may be considered insignificant (60 ug/L) During analysis, the chromatographs of the <br /> groundwater samples from Wells MW-5 indicate an inconsistent chromatographic curve as <br /> compare with a diesel standard The chromatographic curve had predominant peak(s) which are <br />' inconsistent with typical diesel chromatographs The sample was analyzed using gas <br /> chromatography/flame ionization detector, which does not have the capacity to identify <br /> compounds that have an atypical curve response <br />' Benzene was detected in thesarn roundwater le from MW-5 at concentrations which are below <br /> g P <br /> State maximum contarrunant levels Toluene was detected in the groundwater sample from <br />' MW-5 at concentrations which are below Federal ambient water quality criteria <br /> BSK appreciates this opportunity to be of service to Van Den Bergh Foods We look forward <br /> to our continued association Should you have questions, please contact us <br /> Respectfully submitted, <br /> BSK & Associates <br /> f <br />' Martin B Cline <br /> S ff Go st <br /> r <br /> R <br /> Alex Y Eskandan, P E <br />' Project Manager <br /> C E 38101 <br /> AYE MCIHHC (R"SU!NVT9221W92219Q 295) <br /> Attachments Figure 1, Vicinity Map <br />' Figure 2, Groundwater Elevation Contour Map <br /> Figure 3, Summary of Groundwater Elevations (MW-4) <br /> Figures 4-6, Well Field Logs <br /> Laboratory Data Sheets <br /> Level II QC Summary <br /> Chain-of-Custody Document <br /> t Distribution Van Den Bergh Foods Company 4 copies) <br /> g p Y ( P <br /> tAssociates <br />