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Sequoia <br />i s Analytical <br />� <br />404 N Wlget Lane <br />Walnut Creek CA 94598 <br />(925)9W9600 <br />FAX (925) 988-9673 <br />www sequolalabs com <br />Gettler Ryan, Inc -Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 25 -Jul -00 10 44 <br />Volatile Organic Compounds by EPA Method 8260A - Quality Control <br />Sequoia Analytical - Walnut Creek <br />Repotting Splice Source %REC RPD <br />Analyte Result Limit Units Level Result %REC Limits RPD L=t Notes <br />Batch 0G08002 - EPA 5030B JP/TJ <br />Blank (OG08002-BLKl) Prepared & Analyzed 06 -Jul -00 <br />Dichlorodifluoromethane <br />ND <br />20 ug/I <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 />Tnchlorotluoromethane <br />ND <br />20 " <br />1,1-Dichloroethene <br />ND <br />20 " <br />Methylene chloride <br />ND <br />10 <br />Methyl tert butyl ether <br />ND <br />20 " <br />trans -1 2-Dichloroethene <br />ND <br />20 " <br />l,l-Dichloroethane <br />ND <br />20 <br />Dichloropropane <br />ND <br />50 " <br />us 1,2 Dic.hloroethene <br />ND <br />20 <br />Bromochloromethane <br />ND <br />20 " <br />Chlorotorm <br />ND <br />20 " <br />1,1,1 Trichloroethane <br />ND <br />20 " <br />Carbon tetrachlonde <br />ND <br />20 " <br />1,1-Dichloropropene <br />ND <br />20 <br />Benzene <br />ND <br />to <br />1,2-Dichloroethane <br />ND <br />2 0 " <br />Trichloroethene <br />ND <br />2 0 <br />1,2-Dichloropropane <br />ND <br />20 " <br />Dibromomethane <br />ND <br />2 0 " <br />Bromodichloromethane <br />ND <br />2 0 <br />2,2,5,5 Tetramethyltetrahydrofuran <br />ND <br />2 0 " <br />cis-1,3-Dichloropropene <br />ND <br />2 0 " <br />Toluene <br />ND <br />20 " <br />trans 1 3-Dichloropropene <br />ND <br />50 " <br />1,1,2 -Trichloroethane <br />ND <br />20 " <br />Tetrachloroethene <br />ND <br />2 0 " <br />1,3-Dichloropropane <br />ND <br />2 0 " <br />Dibromochloromethane <br />ND <br />2 0 " <br />1,2-Dibromoethane <br />ND <br />2 0 " <br />Chlorobenzene <br />ND <br />2 0 " <br />equoia Analytical - Walnut Creek <br />The results in this report apply to rhe samples analyzed rn accordance wah the chain of <br />custody document This analytical report must be reproduced in its entirety <br />Page 18 of 25 <br />