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Sequoia <br />Analytical <br />SECOR International - Rancho Cordova <br />3017 Kilgore Road, Suite 100 <br />Rancho Cordova, CA 95670 <br />Project Chevron 9-5775, Lodi, CA <br />Project Number 077 41991 043 <br />3roiect Manaeer Rover Hoffmore <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />819 Striker Avenue Suite 8 <br />Sacramento CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www sequoialabs com <br />Sampled 7112100 <br />Received 7/12100 <br />Reported 7/13-14, 17/00 <br />Batch Date Date Specific Reporting <br />Number Prepared Analyzed Method Limit Result Units <br />MW -10A <br />S007095-01 <br />Water <br />Ethanol <br />OG13020 7/13/00 7113100 EPA 8260A <br />500 <br />ND <br />ug/l <br />tert-Butyl alcohol <br />EPA 8260A <br />100 <br />ND <br />Methyl tert-butyl ether <br />EPA 8260A <br />20 <br />ND <br />Di -isopropyl ether <br />EPA 8260A <br />20 <br />ND <br />" <br />Ethyl tert-butyl ether <br />EPA 8260A <br />20 <br />ND <br />" <br />tert-Amyl methyl ether <br />EPA 8260A <br />20 <br />ND <br />" <br />1,2-Dichloroethane <br />EPA 8260A <br />20 <br />ND <br />" <br />Ethylene dibromide <br />EPA 8260A <br />20 <br />ND <br />" <br />Surrogate Dibromofluoromethane <br />" " 50-150 <br />101 <br />%� <br />Surrogate 1,2-Dichloroethane-d4 <br />" " " 50-150 <br />940 <br />" <br />MW -10B <br />S007095-02 <br />Water <br />Ethanol <br />OG13020 7113100 7/13/00 EPA 8260A <br />500 <br />1400 <br />ug/l <br />-Butt'! alcohol <br />to EPA 8260A <br />100 <br />ND <br />" <br />hyl tert-butyl ether <br />" EPA 8260A <br />20 <br />52 <br />" <br />-isopropyl ether <br />EPA 8260A <br />20 <br />ND <br />Ethyl tert-butyl ether <br />EPA 8260A <br />20 <br />ND <br />" <br />tert-Amyl methyl ether <br />EPA 8260A <br />20 <br />ND <br />1,2-Dichloroethane <br />EPA 8260A <br />20 <br />ND <br />Ethylene dibromide <br />" " " EPA 8260A <br />20 <br />ND <br />It <br />Surrogate Dibromofluoromethane <br />50-150 <br />102 <br />Surrogate 1,2-Dichloroethane-d4 <br />50-150 <br />920 <br />" <br />MW -12A <br />S007095-03 <br />Water <br />Ethanol <br />OG13020 7/13/00 7113100 EPA 8260A <br />500 <br />ND <br />ug/l <br />tert-Butyl alcohol <br />" "11EPA 8260A <br />100 <br />ND <br />" <br />Methyl tert-butyl ethcr <br />Itit EPA 8260A <br />20 <br />ND <br />I. <br />Di -isopropyl ether <br />EPA 8260A <br />20 <br />ND <br />Ethyl tert-butyl ether <br />EPA 8260A <br />20 <br />ND <br />tert-Amyl methyl ether <br />EPA 8260A <br />20 <br />ND <br />1,2-Dichloroethane <br />EPA 8260A <br />20 <br />ND <br />Ethylene dibromide <br />to EPA 8260A <br />20 <br />ND <br />" <br />Surrogate Dibromofluoromethane <br />1150-150 <br />102 <br />% <br />Surrogate 12-Dichloroethane-d4 <br />" " " 50-150 <br />940 <br />or <br />MW -12B <br />5007095-04 <br />Water <br />Ethanol <br />OG13020 7/13/00 7/13/00 EPA 8260A <br />500 <br />2000 <br />ug/l <br />tert-Butyl alcohol <br />EPA 8260A <br />100 <br />ND <br />Methyl tert-butyl ether <br />EPA 8260A <br />20 <br />ND <br />Di -isopropyl ether <br />EPA 8260A <br />20 <br />ND <br />" <br />may] tert-butyl ether <br />EPA 8260A <br />20 <br />ND <br />" <br />is Analytical - Sacramento <br />•Rejer to end of report Jor text of notes ana <br />Notes* <br />Page 4 of 13 <br />