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Sequoia <br />Analytical <br />885 Jarvis Dave <br />Morgan Hill CA 95037 <br />(408) 776-9600 <br />FAX (408) 782-6308 <br />3Iaine Tech Services (Chev) <br />Project <br />Chevron 9-5775 (301 w hettleman Lri , Lodi) <br />Sampled <br />12/3/99 <br />680 Rogers Avenue <br />Project Number <br />991203 R-2 <br />Received <br />12/6/99 <br />;an Jose, CA 95112 <br />Project Manager <br />Scott Boar <br />Reported <br />12/22/99 <br />Volatile Organic Oxygenate&Compounds by EPA Method 8260A/Quality Control <br />Sequoia Analytical - San,Carlos <br />Date Spike Sample QC Reporting Limit Recov RPD RPD <br />Analvte Analvzed Level Result Result Units Recov Limits % Limit % Notes* <br />Blank continued <br />9120042-BLK1 <br />ND <br />200 <br />ND <br />200 <br />ND <br />200 <br />Tert-amyi methyl ether <br />12/8/99 <br />ND <br />200 <br />ND <br />ug/l <br />200 <br />Surrogate 1,2-Dtchloroethane-d4 <br />500 <br />520 <br />760-114 <br />104 <br />LCS <br />9120042 -BSI <br />Di -isopropyl ether <br />ND <br />Methyl tent -butyl ether <br />12/8/99 <br />500 <br />472 <br />ug/l <br />700-130 <br />944 <br />Surrogate 12-Dtchloroethane-d4 <br />" <br />-500 <br />526 <br />76 0-114 <br />105 <br />Matrix Spike <br />9120042 -MSI <br />500 <br />L912050-17 <br />760-114 <br />856 <br />LCS <br />Methyl tert-butyl ether <br />12/8/99 <br />500 <br />ND <br />508 <br />ug/l <br />600-140 <br />102 <br />Surrogate 1 2-Dtchloroethane-d4 <br />" <br />500 <br />700-130 <br />533 <br />Surrogate 12-Dtchloroethane-d4 <br />760-114 <br />107 <br />Matrix Spike Dup <br />9120042-MSD1 <br />L912050-17 <br />938 <br />LCS <br />9120045-BS2 <br />ethyl tert-butyl ether <br />12/8/99 <br />500 <br />ND <br />434 <br />ugll <br />600-140 <br />868 250 161 <br />rogate 1 2-Dtchloroethane-d4 <br />11Soo <br />898 <br />rogate 12-Dtchloroethane-d4 <br />534 <br />11 <br />760-114 <br />107 <br />Batch 9120045 <br />Blank <br />Ethanol <br />Tert-butyl alcohol <br />Methyl tert-butyl ether <br />Di -isopropyl ether <br />Ethyl tert-butyl ether <br />Tert-amyl methyl ether _ <br />Surrogate 12-Dtchloroethane-d4 <br />Date Prepared 1219/99 <br />9120045-BLKI <br />12/9/99 <br />500 <br />Extraction Method EPA 5030E IP/Tl <br />ND ug/l <br />1000 <br />ND <br />200 <br />ND <br />200 <br />ND <br />200 <br />ND <br />200 <br />ND <br />200 <br />454 <br />760-114 908 <br />Blank <br />9120045-BLK2 <br />Ethanol <br />12/13/99 <br />ND <br />ug/l <br />1000 <br />Tert-bury) alcohol <br />ND <br />200 <br />Methyl tert-butyl ether <br />ND <br />200 <br />Di -isopropyl ether <br />ND <br />200 <br />Ethyl tert-butyl ether <br />ND <br />200 <br />Tert-amyl methyi ether <br />ND <br />200 <br />Surrogate 1 2-Dtchloroethane-d4 <br />500 <br />428 <br />760-114 <br />856 <br />LCS <br />9120045-13S] <br />Methyl tert-butyl ether <br />_ 12/9/99 <br />500 <br />454 <br />ug/l <br />700-130 <br />908 <br />Surrogate 12-Dtchloroethane-d4 <br />500 <br />469 <br />760-114 <br />938 <br />LCS <br />9120045-BS2 <br />,Akthyl tert-butyl ether <br />12/13/99 <br />500 <br />449 <br />ug/l <br />700-130 <br />898 <br />rogate 12-Dtchloroethane-d4 <br />500 <br />438 <br />760-114 <br />876 <br />Sequoia Analytical Morgan Hill <br />*Refer to end of report for text of notes and definitions <br />Page 9of11 <br />