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QSequoia <br />� Analytical <br />Gettler Rvan Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project 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 W1get Lane <br />Walnut Creek CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequoialabs com <br />Reported <br />18 -Apr -00 11 39 <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analvzed Method Note: <br />Eff (15 15) (W004304-03) Air Sampled <br />12 -Apr -0015 15 <br />Received <br />13 -Apr -00 17 10 <br />trans-l,2-Dichloroethene <br />ND <br />50 inglm' Air 10 OD14016 14 -Apr -00 14 -Apr -00 EPA 8260A <br />12-Dichloropropane <br />ND <br />50 <br />" <br />I 3-Dichloropropane <br />ND <br />50 <br />2 2-Dichloropropane <br />ND <br />50 <br />^ ^ <br />1,1-Dichloropropene <br />ND <br />50 <br />Ethylbenzene <br />200 <br />5 0 <br />Hexachlorobutadiene <br />ND <br />5 0 <br />^ ^ <br />Isopropylbenzene <br />6 1 <br />5 0 <br />" <br />p-lsopropyttoluene <br />ND <br />5 0 <br />Methvlene chloride <br />ND <br />20 <br />Naphthalene <br />ND <br />10 <br />^ <br />n-Propylbenzene <br />20 <br />50 <br />" <br />Styrene <br />ND <br />5 0 <br />" <br />1,1,1,2 -Tetrachloroethane <br />ND <br />5 0 <br />" <br />1,1,2,2 -Tetrachloroethane <br />Tetrachloroethene <br />ND <br />ND <br />5 0 <br />5 0 <br />Toluene <br />730 <br />25 <br />" 50 <br />1,2,3-Tnchlorobenzene <br />ND <br />5 0 <br />10 " <br />1,2,4-Tnchlorobenzene <br />ND <br />50 <br />1,1,1-Tnchlomedme <br />ND <br />50 <br />1,1,2-Tnchloroethane <br />ND <br />50 <br />Tnchloioedmne <br />ND <br />50 <br />Tnchlorofluommethane <br />ND <br />10 <br />1,2,3-Tnchloropropane <br />ND <br />so <br />1,1,4-Trimethylbenzene <br />85 <br />so <br />1,3,5-Tnmethylbenzene <br />35 <br />50 <br />Vinyl chlonde <br />ND <br />50 <br />Total Xylenes <br />410 <br />5 0 <br />" <br />Surrogate Dibromofluoromethane <br />104% <br />70-130 " <br />Surrogate 12-Dichloroethane-0 <br />960% <br />,'0-130 " <br />Surrogate Toluene -d8 <br />154% <br />70-130 9 04 <br />Surrogate 4-Bromofluorobenzene <br />960% <br />70-130 " <br />Sequoia Analytical - Walnut Creek The remlir in this report apply to the samples analyzed ut accordance with the chain of <br />custody document This analytical report must be reproduced in its enizr, <br />Page 9 of 22 <br />w <br />