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Sequoia <br />Analytical <br />404 N Wlget Lane <br />Walnut Creek CA 94598 <br />(925) 988-9600 <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 Deanna L Harding 29 -Jul -00 17 31 <br />Industrial Solvents by EPA Method 8015 (modified) <br />Sequoia Analytical - Morgan Hill <br />Reporting <br />Analyte Result Lunt Units Dilution Batch Prepared Analyzed Method Notes <br />MW -7 (WO07484-08) Water <br />Sampled 24 -Jul -00 16 59 Received 25 -Jul -00 14 30 <br />Methanol <br />ND <br />100 <br />mgA I <br />OG26009 26 -Jul -00 26 -Jul -00 EPA 8015M <br />Surrogate 1 pentanol <br />124% <br />55-157 <br />" <br />Surrogate 1 pentanol (dbwax) <br />110% <br />57-170 <br />lo" <br />MW -8A (WO07484-09) Water <br />Sampled 24 -Jul -00 13 36 <br />Received 2540-00 14 30 <br />Methanol <br />ND <br />100 <br />mg/l 1 <br />OG26009 26 -Jul -00 26 -Jul -00 EPA 8o15M <br />Surrogate 1 pentanol <br />126% <br />55-157 <br />" <br />Surrogate 1 pentanol (dbwax) <br />112% <br />57-170 <br />" <br />MW -8B (WO07484-10) Water <br />Sampled 24 -Jul -00 10 45 <br />Received <br />254ul-00 14 30 <br />Methanol <br />ND <br />100 <br />mg/l 1 <br />OG260O9 26 -Jul -00 26 -Jul -00 EPA 8015M <br />Surrogate 1 pentanol <br />127% <br />55-157 <br />" " <br />Surrogate 1 pentanol (dbwax) <br />Ill % <br />57-170 <br />" <br />MV - (WO07484-11) Water <br />Sampled 24 -Jul -00 14 07 <br />Received <br />25 -Jul -00 14 30 <br />M l <br />ND <br />100 <br />mg/1 1 <br />OG26009 26 -Jul -00 27 -Jul -00 EPA 8015M <br />Surrogate 1 pentanol <br />117% <br />55-157 <br />Surrogate 1 pentanol (dbwax) <br />111 % <br />57-170 <br />MW -10A (W007484-12) Water Sampled 24Jul-W 13 35 Received 25 -Jul -00 14 30 <br />Methanol <br />ND <br />100 <br />mgll 1 <br />OG26009 26 -Jul -00 27 -Jul -M EPA 8015M <br />Surrogate 1 pentanol <br />129% <br />55-157 <br />" <br />Surrogate 1 pentanol (dbwax) <br />118% <br />57-170 <br />" <br />MW -10B (W007484-13) Water Sampled 24-J W010 35 Received 25Ju1-0014 30 <br />Methanol <br />ND <br />100 <br />mgfl t <br />OG26009 26 -Ad -00 27 -Jul -00 EPA 9015M <br />Surrogate 1 pentanol <br />121% <br />55-157 <br />Surrogate I pentanol (dbwax) <br />107 % <br />57-170 <br />S to Analytical - Walnut Creels The results in tins report apply to the samples analyzed to accordance with the chan of <br />custody document Tins analytical report must be reproduced in its entirety <br />Page 16 of 26 <br />