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ZSequoia <br />(N Analytical <br />0 11CO <br />Gettler-Ryan/Geostrategies(1) <br />6747 Sierra Court, Suite J <br />Dublin. CA 94568 <br />Sample Description <br />Laboratory Sample Number <br />Project Chevron(1) <br />Project Number Chevron 9-5775 <br />'roiect Manaeer Scott Polston <br />MP -1 <br />L007074-03 <br />1551 Industrial Road <br />San Carlos CA 94070-411 l <br />(650) 232-9600 <br />FAX (650) 232-9612 <br />www sequoialabs com <br />Sampled 7110100 <br />Received 7/11100 <br />Reported 7/19/00 <br />Batch Date Date Specific Method/ Reporting <br />Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br />Seauoia Analytical - San Carlos <br />Volatile Organic Oxygenated Com ounds by EPA Method 8260A <br />Ethanol 0070050 7/13/00 7/13/00 <br />1000 <br />ND ug/I <br />Tert-butyl alcohol <br />100 <br />ND " <br />Methyl Cert -butyl ether <br />200 <br />ND <br />Di -isopropyl ether <br />200 <br />ND <br />Ethyl tert-butyl ether <br />2 00 <br />ND <br />Tert-amyl methyl ether <br />200 <br />ND " <br />Surrogate 1 2-Dichloroethane-d4 " " " 760-114 <br />102 % <br />PJ <br />0 Sequoia Analytical - San Carlos *Refer to end of report for text of notes and definitions <br />Page 4 of 7 <br />