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JCAJNA <br /> � Report Number : 40073 <br /> LYT/GAL Li-c Date : 9/17/2004 <br /> Subject : 5 Water Samples <br /> Project Name : Beacon <br /> Project Number : 3641 Stockton <br /> P.O. Number : 3641-106 <br /> Case Narrative <br /> Hydrocarbons reported as TPH as Gasoline do not exhibit a typical Gasoline chromatographic pattern for <br /> sample SW-1. <br /> The Method Reporting Limit for Methanol has been increased due to the presence of an interfering <br /> compound for samples MW-2 and MW-4. <br /> Tert-Butanol results for samples MW-2, MW-5 and SW-1 may be biased slightly high and are flagged with <br /> a U. A fraction of MtBE (typically less than 1%) converts to Tert-Butanol during the analysis of water <br /> samples. We consider this conversion effect to be mathematically significant in samples that contain <br /> MtBE1Tert-Butanol in ratios of over 20:1. <br /> r.+!r <br /> Approved By: <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 J e Kiff <br />