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Sequoia <br />� Analytical <br />Gettler Ryan Inc -Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron #J 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 Wiget Lane <br />Walnut Creek CA 94598 <br />(925)988-9600 <br />FAX (925) 988-9673 <br />www sequoiaiabs com <br />Reported <br />18 -Apr -00 11 39 <br />Reporting <br />lnalyte Result Limit Units Dilution Batch Prepared Analvzed Method Note <br />Inf (15 25) (WO04304-04) Air <br />Sampled 12 -Apr -00 15 25 <br />Received 13 -Apr -00 17 10 <br />Naphthalene <br />ND <br />100 mg/m' Air 100 OD14016 14 -Apr -00 14 -Apr -00 EPA 8260A <br />n-Propylbenzene <br />ND <br />50 <br />Styrene <br />ND <br />50 " <br />1,11,2 -Tetrachloroethane <br />ND <br />50 <br />1,1,2,2 -Tetrachloroethane <br />ND <br />50 <br />Tetrachloroethene <br />ND <br />50 " <br />Toluene <br />1200 <br />50 " <br />1,2,3-Tnchlorobenzene <br />ND <br />50 " <br />1,2,4-Tnchlorobenzene <br />ND <br />50 <br />111 -Trichloroethane <br />ND <br />50 " <br />1,1.2-Tnchloroethane <br />ND <br />50 " <br />Tnchloroethene <br />ND <br />50 " <br />Trichlorofluoromethane <br />ND <br />100 " <br />12,3-Tnchloropropane <br />ND <br />50 " <br />1,2,4-Tnmethylbenzene <br />ND <br />50 " <br />1,3,5-Tnmethylbenzene <br />ND <br />50 " <br />Vmyl chloride <br />ND <br />50 " <br />Total Xylenes <br />300 <br />50 <br />Surrogate Dibromofluoromethane 106% 70-130 " <br />Surrogate 12-Dtchloroethane,d4 980% 70-130 " <br />Surrogate Toluene -d8 980% 70-130 " <br />Surrogate 4-Bromofluorobenzene 960% 10-130 <br />EX-1(WO04304-05) Water Sampled 12 -Apr -00 16 23 Received 13 -Apr -0017 10 <br />Dichlorodifluoromethane <br />ND <br />100 agll 5o OD13012 13 -Apr -00 14 -Apr -00 EPA 8260A <br />Chloromethane <br />ND <br />100 " <br />Vmyl chloride <br />ND <br />100 <br />Bromomethane <br />ND <br />250 " <br />Chloroethane <br />ND <br />100 " <br />Tnchlorofluoromethane <br />ND <br />100 " <br />IJ-Dichloroethene <br />ND <br />100 <br />Methylene chloride <br />ND <br />500 " <br />trans-l,2-D>chloroethene <br />ND <br />100 <br />l,i-Dichloroethane <br />ND <br />100 <br />2 2-Dichloropropane <br />ND <br />250 " <br />cis-l2-Dichloroethene <br />ND <br />100 " <br />Bromochloromethane <br />ND <br />100 " <br />Chloroform <br />ND <br />100 " <br />Sequoia Analytical - Walnut Creek <br />• <br />The results in this report apply to the samples analyzed in accordance with the chain of <br />custody document This analytical report must be reproduced in its entire* <br />Page 11 of 22 <br />