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Sequoia <br />Analytical <br />404 N Wtget Lane <br />Walnut Geek CA 94598 <br />(925) 988-960D <br />FAX (925) 988-9673 <br />www segvotalans corn <br />R47 <br />ler Ryan hic - Dublin Project Chevron <br />Sierra Court Suite J Prolmt Number Chevron 119-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 21 -Jun -00 11 57 <br />volatile urganic Uompounds 13V ErA Method 8260A <br />Sequoia Analytical - Walnut Creep <br />Reporting <br />Lnalyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br />EX -1 (W006417-01) Water Sampled <br />15-1un-0014 00 <br />Received 16-1un-00 14 07 <br />tent -Butyl alcohol <br />ND <br />500000 ug,) 5000 OF15004 20 -Jun -00 20 -Jun -00 EPA 8260A <br />Methyl tent -butyl ether <br />200000 <br />10000 <br />Di-isopropvl ether <br />ND <br />10000 " <br />Ethyl tent -butyl ether <br />ND <br />10000 <br />tert-Amyl methyl ether <br />ND <br />10000 <br />Surrogate Dibromofluorom ethane <br />100% 50-150 <br />Surrogate 12-Dichloroethane-d4 <br />100% 50-150 <br />• <br />Sequoia Analytical - Watnut Creek <br />i <br />The resultr in dus report apply to the samples anal med in accordance with the chain of <br />custody document This analytical report must be reproduced in its entirety <br />Page 3 of 6 <br />