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Ms. Sandi Sarale `"� <br /> 16500,Clifton Court Rd. <br /> Page 2 oft <br /> MW-1 and MW-3; tert-amyl methyl ether (TAME) has consistently been detected <br /> in samples from MW-3. The lead scavenger 1,2-dichloroethane (1,2-DCA) has <br /> been commonly detected in samples from MW-1;,-MW-3-and MW-4.- Tert-butyl <br /> alcohol (TBA) has been detected in samples from MW-1 during the last. two <br /> monitoring events. TPH-g, benzene, MTBE and 1,2-DCA concentrations exceed <br /> the maximum contaminant levels (MCLs) for these substances in drinking water. <br /> AGE concludes that neither impacted soil nor ground water has been fully <br /> delineated and recommends preparation of a work plan addendum to complete <br /> the characterization of the site and the contaminants. EHD concurs with this <br /> recommendation and directs you to have a work plan addendum prepared to <br /> complete the vertical and lateral assessment of impacted soil and ground water <br /> on your site. Please submit the work plan addendum to this office by <br /> 18 September 2004. <br /> Questions or comments may be directed to the undersigned at (209) 468-3436. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> Nuel C. Henderson, Jr., RG Margaret Lagorio, REHS <br /> Unit IV - Site Mitigation, LOP Supervisor, Unit IV, LOP <br /> C: James L.L. Barton — CVRWQCB <br /> Donna Sexton - AGE <br />