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404 N Wiget Lane <br />Walnut Creek CA 94598 <br />Sequoia (925) 988.9600 <br />FAX (925) 988-9673 <br />�,,, <br />,5)— Analytical WWW �uowd& <br />Gettler Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Dubitn CA 94568 Project Manager Scott Polston 25 -Jul -00 10 44 <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analvte Result Limit Units Dilution Batch Prepared Analvzcd Method Notes <br />Eff(W007080-01) Water Sampled 06 -Jul -0011 30 Received 06 -Jul -00 13 45 <br />Ethanol <br />ND <br />500 ugll t 060701 s 07 -Jul -00 07 -Jul -00 EPA 8260A <br />tett-Butyl alcohol - <br />ND <br />100 <br />Methyl tent -butyl ether . <br />ND <br />20 <br />Di -isopropyl ether . <br />ND <br />20 <br />Ethyl tert-butvi ether • <br />ND <br />20 „ <br />Cert -Amyl methvl ether. <br />ND <br />20 " <br />1,2-Dichloroethane _ <br />ND <br />20 „ <br />Ethylene dibromide <br />ND <br />20 <br />Surrogate DtbromofIuoromethane <br />100% 50-150 " <br />Surrogate 1,2-Dtchloroethane-d4 <br />920% 50-150 <br />Dichlorodifluoromethane <br />ND <br />20 0008002 08 -Jul -00 08 -Jul -00 " <br />Chloromethane <br />ND <br />20 ^ » <br />Vinyl chloride <br />ND <br />20 <br />Bromomethane <br />ND <br />50 <br />Chloroethane <br />ND <br />20 ^ » <br />Trichlorofluoromethane <br />ND <br />20 <br />1,1-Dichloroethene <br />ND <br />20 <br />Methylene chlonde <br />ND <br />10 " <br />Methyl tett butyl ether <br />ND <br />20 ^ <br />» <br />trans-1,2-Dichloroethene <br />ND <br />20 « » <br />1,1-Dichloroethane <br />ND <br />20 <br />2,2-Dichloropropane <br />ND <br />50 <br />cts0,2-DwItloroethene <br />ND <br />20 " <br />Bromochloromethane <br />ND <br />20 <br />Chloroform <br />ND <br />20 <br />1,1,1 -Trichloroethane <br />ND <br />20 ^ ^ ^ <br />^ <br />Carbon tetrachlonde <br />ND <br />20 « » » <br />» <br />i,l Dicidoropropene <br />ND <br />20 " ^ • ^ » <br />^ <br />Benzene <br />ND <br />20 ^ ^ <br />1,2-Dichloroedme <br />ND <br />20 ^ ^ <br />Trichloroethene <br />ND <br />20 " <br />1,2 Dichloropropane <br />ND <br />20 <br />Dibromomethane <br />ND <br />20 ^ <br />" <br />Bromodichloromethane <br />ND <br />20 » <br />2,2,5,5-Tetiamethyltetrahydrofuran <br />ND <br />20 <br />cis-1,3-Dichloropropene <br />ND <br />20 <br />Toluene <br />ND <br />20 " <br />trans-l,3-Dtchloropropene <br />ND <br />50 <br />- Walnut Creek The results to this report apply to the samples analysed in accordance with tine <br />custody docwnena. This anaf ocal report must be reproduced rn its <br />Page 5 of 25 <br />