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envtroso <br /> Additionally, a duplicate sample and an equipment blank were prepared and analyzed for <br /> quality control purposes <br /> Field monitoring and chemical analytical data are summarized in Table 1 Blaine's <br /> quarterly ground water monitoring report is presented in Appendix A <br /> As described in our Fourth Quarter 1996 report, sampling of Wells MW-1 and MW-2 was <br /> again performed and all well seals were inspected The sampling indicated that TPPH <br /> concentrations were ND and low levels of BTEX compounds were detected, which is <br /> consistent with 1996 fourth quarter data Surface seals were inspected on all wells and <br /> were reported to be in good condition with no evidence of surface cracking or seal <br /> contraction Additionally, the skimmer was removed from Well MW-3 <br /> We continue to wait for a right-of-entry agreement regarding property access to the south <br /> Upon receipt of all necessary right of entries, SJCPHS will be contacted to confirm the <br /> final scope of drilling activities prior to pernutting and performing the work <br /> Site monitoring and sampling will continue according to the established schedule <br /> If you have any questions regarding the contents of this document, please call <br /> Sincerely, <br />. Enviros, Inc <br /> Jeff Gaarder <br /> Project Geologist OFESSI� <br /> LU,v <br /> Diane M Lundquist, P <br /> Senior Engineer NO 06725 <br /> C46725 sl cfvk <br /> Attachments qTE OF CA1�F�� <br /> Table 1 Well Concentrations <br /> Plate l Site Vicinity Map <br /> Plate 2 Ground Water Contour/Benzene Concentration Map <br /> Appendix e—�ndix AA <br /> Blaine Quarterly Ground Water Monitoring Report <br /> cc Ms Mary Meays, San Joaquin County Environmental Health Division <br /> Ms Elizabeth Thayer, Central Valley Regional Water Quality Control Board <br /> 97374 2 <br />