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.�� Sequoia <br />Analytical <br />•�,,,� <br />885 Jarvis Drive J <br />Morgan Hill CA 95037 <br />(408) 776-9600 <br />FAX (408) 782-6308 <br />Blaine Tech Services (Chew) <br />Project <br />Chevron 9-5775 (301 W kettieman Ln Lodi) <br />Sampled <br />12/3/99 <br />1680 Rogers Avenue <br />Project Number <br />99120312-2 <br />Received <br />12/6/99 <br />San Jose, CA 95112 <br />Project Manager <br />Scott Boor <br />Reported <br />12/22/99 <br />Volatile Organ WOxygenated'Compounds by EPA MethodM60A/Quality Control <br />�Sequota Analytical - San=Carlos , <br />Date Spike Sample QC Reporting Limit Recov RPD RPD <br />Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br />Batch 9120033 <br />Date Prepared <br />12/7/99 <br />Extraction Method EPA 5030E PIT <br />Blank <br />9120033-BLK1 <br />Ethanol <br />12/7/99 <br />ND <br />ug/l <br />1000 <br />Teri -butyl alcohol <br />ND <br />200 <br />Methyl tert-butyl ether <br />ND <br />200 <br />Di -isopropyl ether <br />ND <br />200 <br />Ethyl tent -butyl ether <br />ND <br />200 <br />Tert-amyl methyl ether <br />ND <br />200 <br />Surrogate 12-Dichlaroethane-d4 <br />500 <br />428 <br />760-114 <br />85 6 <br />Blank <br />9120033-BLK2 <br />Ethanol <br />12/9/99 <br />ND <br />ug/l <br />1000 <br />Tert-butyl alcohol <br />ND <br />200 <br />thy] tert-butyl ether <br />ND <br />i <br />200 <br />isopropyl ether <br />ND <br />200 <br />Ethyl tert-butyl ether <br />ND <br />200 <br />Tert-amyl methvl ether <br />ND <br />200 <br />Surrogate 1 2-Dichloroethane-d4 <br />Soo <br />454 <br />760-114 <br />908 <br />LCS <br />9120033-BS1 <br />Methyl tert-butyl ether <br />12/7/99 <br />500 <br />454 <br />ug/l <br />700-130 <br />908 <br />Surrogate 1 2-Dichloroethane-d4 <br />11.500 <br />452 <br />760-114 <br />904 <br />LCS <br />9120033-BS2 <br />Methyl tett-butyl ether <br />1219/99 <br />500 <br />454 <br />ug/l <br />700-130 <br />908 <br />Surrogate 12-Dichloroethane-d4 <br />11500 <br />469 <br />760-114 <br />938 <br />Matrix Spike <br />9120033 -MSI <br />L912044-03 <br />Methyl tert-butyl ether <br />12/7/99 <br />500 ND <br />464 <br />ug/l <br />600-140 <br />928 <br />Surrogate 12-Dichloroethane-d4 <br />500 <br />432 <br />760-114 <br />864 <br />Matrix Spike Dup <br />9120033-MSD1 L912044-03 <br />Methyl tert-butyl ether <br />12/7/99 <br />500 ND <br />464 <br />ug/l <br />600-140 <br />928 25 0 0 <br />Surrogate 1 2-Dichloroethane-d4 <br />" <br />Soo <br />428 <br />" <br />760-114 <br />856 <br />Batch 9120042 <br />Date Prepared <br />1218/99 <br />Extraction Method EPA 5030B[P/TI <br />Blank <br />9120042-BLK1 <br />Ethanol <br />12/8/99 <br />ND <br />ug/l <br />1000 <br />Tert-butyl alcohoi <br />ND <br />200 <br />Methyl tert-butyl ether <br />ND <br />200 <br />ether <br />ND <br />200 <br />�isopropyl <br />yl tert-butyl ether <br />ND <br />200 <br />Sequoia Analytical - Morgan Hi 11 *Refei to end of report for text of notes and definitions <br />Page 8of11 <br />