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Sequoia <br />Analytical <br />SECOR International - Rancho Cordo%a <br />3017 Kilgore Road Suite 100 <br />Rancho Cordova CA 95670 <br />Proio t Chevron 9-5775 Lodi CA <br />Project Number 077 41991 043 <br />Project Manager Ronald Chinn <br />Volatile Oxygenate Compounds by EPA Method 8260A - Quality Control <br />Sequoia Analytical - Sacramento <br />819 Striker Avenue Suite 8 <br />Sacramento CA 95834 <br />(916)921-9600 <br />FAX (916) 921 0100 <br />www sequoialabs com <br />Reported <br />11/28/0017 58 <br />IReporting Spik. Source °oREC RPD <br />Ankle R�suh Limn thugs I Cid Result %R1 C I imps RPD l unit Nobs <br />Batch 0110092 - EPA 50308 [P/TJ <br />Blank (0110092-BLK1) <br />l'rc.parc,d & Analyrt,d <br />11/17/00 <br />Fert-butyl alcohol <br />ND <br />200 <br />ug/l <br />Methyl ten -butyl ether <br />ND <br />200 <br />Di -isopropyl ether <br />ND <br />200 <br />Ethyl tent -butyl ether <br />ND <br />200 <br />Fert-amyl methyl ethu <br />ND <br />200 <br />Ethanol <br />ND <br />3000 <br />1,2-Dichloroethane <br />ND <br />200 <br />Ethylene dibromtde <br />ND <br />200 <br />Surrogate 12 -DCA -d4 <br />469 <br />500 <br />938 60-140 <br />10092-BS1) <br />Prepared &Analyzed <br />l i/17100 <br />Me n -butt'! ether <br />489 <br />200 <br />ugll <br />S0 0 <br />- <br />97 8 70-130 <br />gate 12 -DCA -d4 - - <br />502 <br />- <br />500 <br />100 60-140 <br />Matrix Spike (0110092 -MSI) <br />_ _ Source 5011231-01 <br />Prepared & Analyzed <br />11/17/00 <br />Methyl tert-butyl ether <br />492 <br />200 <br />ugA <br />500 ND <br />984 60-140 <br />Surrogate 12 -DCA -d4 - --- - - <br />_ 469 <br />500 <br />938 60-140 <br />M_atrt: SQke Dup (0110092_-_M_SDI) _ <br />_ <br />_ Source <br />S_01123.1_-01 <br />Prepared & Analyzed <br />11/17/00 ____ <br />Methyl tat -butyl ether <br />507 <br />200 <br />ugn <br />50 0 ND <br />101 60-140 300 25 <br />Sw►ojgate 11-DCAd4 ' - � -- <br />- 490 — <br />-- ^ <br />"- <br />- SO 0 <br />980 60-140 <br />Batch 0110345 - EPA 50306 PIT <br />Blank (0110345-BLKI) <br />T <br />_ <br />Prepared & Analyzed <br />11/20/00 <br />Tat -butyl alcohol <br />ND <br />200 <br />ug/I <br />Methyl ten -butyl ether <br />ND <br />200 <br />" <br />Dt-nopropyl ether <br />ND <br />200 <br />" <br />Ethyl tort -butyl ether <br />ND <br />200 <br />" <br />Tert-amyl methyl ether <br />ND <br />200 <br />" <br />Ethanol <br />ND <br />3000 <br />" <br />1,2-Diehloroethane <br />ND <br />200 <br />Ethylene dibromtde <br />ND <br />200 <br />" <br />- - - - <br />- -- - - - <br />Surrogate 1 2 -DCA -d4 <br />542 <br />_ <br />500 <br />108 60-140 <br />"Wta Analvttcal - Sacramento <br />The results in this report apply to the samples analysed to accordance with the chain of <br />custody document This analytical report must be reproduced in Ns entirety <br />WPM <br />Page 7 of l0 <br />