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QSequoia <br />� Analytical <br />404 N Wiget Lane <br />Walnut Creek CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequoialabs corn <br />ettler Rvan laic - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 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 />Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note: <br />EX -1 (WO043044)5) Water Sampled <br />12 -Apr -00 16 23 <br />Received 13 -Apr -00 17 10 <br />111 -Trichloroethane <br />ND <br />100 ug/1 50 OD13012 13 Apr 00 14 -Apr 00 EPA 8260A <br />Carbon tetrachloride <br />ND <br />100 <br />1,1-Dwhloropropene <br />ND <br />100 <br />Benzene <br />28000 <br />500 500 <br />1,2-Dichloroethane <br />ND <br />100 50 <br />Trichloroethene <br />ND <br />100 <br />l2-Dichloropropane <br />ND <br />100 <br />Dibromomethane <br />ND <br />100 <br />B romodichloro methane <br />ND <br />100 <br />2 2 5 5-Tetramethyltetrahydroluran <br />ND <br />100 " <br />cis-l3-Dichloropropene <br />ND <br />100 <br />Toluene <br />500 <br />100 <br />trans-1,3-Dichloropropene <br />ND <br />250 <br />11,2-Tnchloroethane <br />ND <br />100 <br />ft hloroethene <br />ND <br />100 <br />ichloropropane <br />ND <br />100 " <br />Dibromochloromethane <br />ND <br />100 " <br />1,2-Dbromoethane <br />ND <br />100 <br />Chlorob=ene <br />ND <br />100 " <br />Ethylbenzene <br />1100 <br />100 <br />Total Xylenes <br />700 <br />loo <br />1,1,1.2 -Tetrachloroethane <br />ND <br />loo " « <br />Styrene <br />ND <br />100 " <br />Bromoform <br />ND <br />100 " <br />Isopropy%enzene <br />ND <br />100 <br />1,1,2,2 -Tetrachloroethane <br />ND <br />100 <br />Bromobenzene <br />ND <br />100 » » <br />n-Propylbenzene <br />ND <br />100 " <br />11,3-Tnchloropropane <br />ND <br />100 " <br />2-Chlorotoluene <br />ND <br />100 " <br />l 3 5-Tnmethvlbenzene <br />ND <br />100 <br />4-Chlorotoluene <br />ND <br />100 " <br />tert-Butylbenzene <br />ND <br />100 " <br />1,2,4-Trimethylbenzene <br />130 <br />100 " <br />sec-Butylbenzene <br />ND <br />100 <br />p-Isopropyltoluene <br />ND <br />100 <br />I3 -Dichlorobenzene <br />ND <br />100 <br />14 -Dichlorobenzene <br />ND <br />100 <br />6 oia Anah tical - Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br />custodv document This analytical report must he reproduced in its entirety <br />Page 12 of 22 <br />AN <br />