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.�� Report Number 37687 <br /> • ANALYTICAL ccc Date 04/08/2004 <br /> Subject 12 Water Samples <br /> Project Name Beacon <br /> Project Number 3641 Stockton <br /> P O Number 3641-106 <br /> Case Narrative <br /> Tert-Butanol results for samples MW-5 and VW-5 may be biased slightly high and are flagged with a V A <br /> fraction of MtBE (typically less than 1%) converts to Tert-Butanol during the analysis of water samples <br /> We consider this conversion effect to be mathematically significant in samples that contain <br /> MtBE/Tert-Butanol in ratios of over 20 1 <br /> Sample MW-1 was analyzed by EPA Method 8260B using a bottle that contained a headspace bubble <br /> greater than 1/4 inch in diameter <br /> Jj <br /> Approved By <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />