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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 secluoialabs corn <br />Gettler Ryan Inc -Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron #19-5775 Reported <br />Dublin CA, 94568 Project Manager Scott Polston 01 -Jun -00 1105 <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Andl�te Result Limit Units Dilution Batch Prepared Analvzed Method Notes <br />EX -1 (WO05732-01) Water Sampled 25 -May -00 15 15 <br />Received 26 -Ma -,-00 17 13 <br />tort -Butyl alcohol <br />ND <br />100000 ug/l 1000 OE30023 30 -May -00 30 -May -00 EPA 8260A <br />Methyl tert-butyl ether. <br />350000 <br />2000 " <br />Di -isopropyl ether <br />ND <br />2000 " <br />Ethyl tert-butyl ether <br />9300 <br />2000 " <br />tert-Amyl methyl ether <br />3200 <br />2000 " <br />Surrogate Di bromofluorom ethane <br />104% 50-150 <br />Surrogate 12-Diehloroethane-d4 <br />112% 50-150 " <br />• <br />Sequoia Analytical - Walnut Creek The resulis in this report apply to the samples analyzed in accordance with the chain 0imh <br />custody document. This analytical report must be reproduced in its enure <br />Page 3 of 7 <br />N" <br />= <br />