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QSequoia <br />� Analytical <br />Ciettler Ryan Inc -Dublin Project Chevron <br />6747 Sierra Court Suite J Projett Number Chevron #9-5775 <br />Dublin CA 94568 Project Manager Scott Polston <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />404 N Wiget lane <br />Walnut Creek CA 94598 <br />(925) 989-9600 <br />FAX (925) 988-9673 <br />www sequoWabscor„ <br />Reported <br />21 -Jun -00 11 57 <br />Reporting <br />knalyte Result Limit Units Dilution Batch Prepared Analyzed Method Note: <br />EX -1 (W006417-01) Water Sampled <br />15,iun-00 14 00 <br />Received 16-1un4)0 14 07 <br />tert-Butyl alcohol <br />ND <br />500000 ugfl 5000 OF15004 20 -Jun -00 20 -Jun -00 EPA 8260A <br />Methyl tert-butyl ether <br />200000 <br />10000 <br />Di-isopropvl ether <br />ND <br />10000 " <br />Ethyl tert-butyl ether <br />ND <br />10000 <br />tert-Amyl methyl ether <br />ND <br />10000 " <br />Surrogate Dibromofluoromethane <br />100 0 50-150 " <br />Surrogate 1,2-Dichloroethane-d4 <br />100% 50-150 <br />• <br />Sequoia Analvtical - Walnut Creek <br />0 <br />The results in this report apply to the smnples analyzed in accordance with the chain of <br />custody document This analytical report must be reproduced in its entirety <br />Page 3 of 6 <br />