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Sequoia <br />� Analytical <br />404 N WiSer Lane <br />Walnut Creek CA 94598 <br />(925) 988-9640 <br />FAX (925) 988-9673 <br />www sequoialabs corn <br />er Rvan Inc -Dublin ProleLt Chevron <br />b747 Sierra Court Suite J ProleLt Number Chevron # 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 07 -Jun -00 10 12 <br />Volatile Organic Cotnnounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />lnalyte Result Limit Units Dilution Batch Prepared Analvzed Method Note <br />EX -1 (WO06058-01) Water Sampled 01 -Jun -00 14 50 <br />Received 02 -Jun -00 16 00 <br />tert-Butyl alcohol <br />290000 <br />100000 ug/l 1000 OF06012 05 Jun -00 05 Jun -00 EPA 8260A <br />Methyl tent -butyl ether <br />300000 <br />2000 " <br />Di-isopropvl ether <br />ND <br />2000 <br />EthN l tert-buts l ether <br />7900 <br />2000 <br />tert-Amyl methvl ether <br />3200 <br />2000 " <br />Surrogate DibromoJluoromethmie <br />100% 50-150 <br />Surrogate 1 2-Dichloroethane-d4 <br />900% 50-150 " <br />0 <br />Sequoia Anal-, tical - Walnut Creek The results in this report apply to the sampler analvred in accordance with the chain of <br />. custody document This analytical report must be reproduced in its entirety <br />Page 3 of 6 <br />0 <br />