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JUL-02-97 WED 03.52 PCI WEST LAB FAX NO. 916-757-9610 P. 01/01 <br /> I <br /> July 2 7 <br /> 199 <br /> I <br /> Bob Marty <br />' Geological Audit Service <br /> 1803 March Lane <br /> Stockton, CA 95207 <br /> Dear Mr Marry <br />' RE WEST Sample Log 8994, Stewart's Beacon <br /> Samples MW-t, MW-2, MW-3, MW-4 03/25/94 <br /> f have examined the chromatograms you faxed me Based on my experience <br /> with the system WEST Lab used for analysis, I see no evidence of MTBE in any <br /> of the samples This compound would have appeared as one or two sharp <br /> I peaks near the far felt of the chromatograms Since we were not calibrating for <br /> MTBE at that time on the instrument used, I cannot put a value on that <br /> compound However, it is not unreasonable to think that similar limits to those <br /> that we currently use might apply (5 Oppb X Dilution Factor) <br /> If you need any other information regarding this subject, please feel free to <br /> contact me <br /> Stewart Podolsky <br /> Senior Chemist <br /> r <br /> • <br />