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Sequoia <br />� Analytical <br />404 N Wiget Lane <br />Walnut Creek CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequoialabs com <br />Gettler Rvan Inc -Dublin Proiett Chevron <br />6747 Sierra Court Suite J Projeu Number Chevron # 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 07 -Jun -00 10 12 <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analvzed Method Note: <br />EX -1 (W006058-01) Water Sampled 01.1un-0014 50 Received 02 -Jun -00 16 00 <br />tert-Butyl alcohol 290000 100000 ug/l 1000 OF06012 05 -Jun -00 05 -Jun -00 EPA 8260A <br />Methyl test-but%I ether 300000 2000 " <br />Di -isopropyl ether ND 2000 <br />Ethyl tert-butyl ether 7900 2000 " <br />tort -Amyl tnethvl ether 3200 2000 " <br />Surrogate Dibromofluoromethane <br />Surrogate 12-Dichloroethane-d4 <br />100% 50-150 <br />900% 50-150 <br />equola Analr tical - Walnut Creek The results in this report apply to the samples analvzed in accordance with the chain of <br />custody document This analytical report must be reproduced in its entirety <br />Page 3 of 6 <br />4 <br />