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Sequoia <br />� Analytical <br />404 N Wiget Lane <br />Walnut Creek CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequoialabs com <br />Gettler Ryan Ing - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Che%ron 4 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 18 -Apr -00 11 39 <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />lnalvte Result Limit Units Dilution Batch Prepared Analvzed Method Note <br />Inf (15 25) (W004304-04) Air Sampled 12 -Apr -00 15 25 Received 13 -Apr -00 17 10 <br />Benzene <br />2000 <br />50 melm'Atr 100 OD14016 14 -Apr -00 14 -Apr -00 EPA ?260A <br />Bromobenzene <br />ND <br />50 <br />Bromochloromethane <br />ND <br />50 <br />Bromodichloromethane <br />ND <br />50 <br />Bromolorm <br />ND <br />50 <br />Bromomethane <br />ND <br />100 <br />,i-Butvibenzene <br />ND <br />50 <br />pec-Butvibenzene <br />ND <br />50 " <br />tert-Butvlbenzene <br />ND <br />50 <br />Carbon tetrachlonde <br />ND <br />50 <br />Chlorobenzene <br />ND <br />50 <br />Chloroethane <br />ND <br />100 " <br />Chloroform <br />ND <br />50 <br />Chloromethane <br />ND <br />100 <br />orotoluene <br />ND <br />50 ry <br />orotoluene <br />ND <br />50 " <br />Dibromochlorotnethane <br />ND <br />50 <br />1,2-Dibromoethane <br />ND <br />50 <br />Dibromomethane <br />ND <br />50 <br />1,2-Dtbromo-3-chloropropane <br />ND <br />100 <br />1,2 -Dichlorobenzene <br />ND <br />50 <br />1,3 -Dichlorobenzene <br />ND <br />50 <br />1,4-Dichlombenzene <br />ND <br />50 <br />Dtchlorodifluommethane <br />ND <br />100 <br />113-Dtehloroethaite <br />ND <br />50 <br />1,2-Dichloroethane <br />ND <br />50 " <br />1,11-Dichloroethene <br />ND <br />50 " <br />cis-1,2-Dichloroethene <br />ND <br />50 " <br />trans-l.2-Dichloroethene <br />ND <br />50 " <br />1.2-Dichloropropane <br />ND <br />50 " <br />1,3-Dichioropropane <br />ND <br />50 <br />2,2-Dichioropropane <br />ND <br />50 " <br />I 1-Dichloropropene <br />ND <br />50 " <br />Ethylbenzene <br />76 <br />50 " <br />Herachlorobutadiene <br />ND <br />50 <br />Isopropylbenzene <br />ND <br />50 <br />p-Isopropyltoluene <br />ND <br />50 <br />Methylene chloride <br />ND <br />200 " <br />oia Analytical - Walnut Creek The results in this report apply to the samples mialv--ed in accordance with the chain of <br />eustody document This analytical report must be reproduced in its entirety <br />Page 10 of 22 <br />