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Starting in the third quarter of 1997, as required by the Central Valley Regional Water Quality <br /> • Control Board (CVRWQCB), samples were analyzed for Oxygenates by EPA Method 8260 The <br /> seven oxygenates which were sampled for are Di-isopropyl ether, Ethanol, Ethyl tert-Butyl Ether, <br /> Methanol, Methyl tert-Butyl Ether, Tert-Amyl Methyl Ether, Tert-Butanol A summary of select <br /> analytical sampling results are provided in Table 1, and a copy of the analytical laboratory report <br /> is contained in Appendix A <br /> CONCLUSION <br /> Thrifty plans to continue the current groundwater monitoring and sampling program, and is in the <br /> process of obtaining bids to re-survey the site including the well head elevations of each well <br /> Thrifty anticipates this work will be completed by the end of the 4th quarter 1998 <br /> Thrifty has submitted to the San Joaquin Air Pollution Control District (SJAPCD) a permit <br /> application to operate a remediation system at this site The SJAPCD sent Thrifty a letter which <br /> states the application appears to be complete, and is being processed A copy of this letter is <br /> enclosed in Appendix B <br /> All interpretations expressed in this report are based upon review of data collected by EMC <br /> Should you have any question or require additional information, please contact the undersigned at <br /> (562) 921-3581 <br /> Respectfully, <br /> (:;ay and C Frie richsen Bryan Van Wagner, RG, CH <br /> Project Manager Hydrogeologist <br /> cc ARCO Products Company <br /> File <br />• <br />