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Sequoia <br /> 885 JarDrivevis Morgan Hill CA 950375037 <br /> � <br /> (40a) 776-9600 <br /> Iwo Analytical <br /> FAX (408) 782-6308 <br /> Blame Tech Services(Chev) Project Chevron 9-8264(3775 Tracy Blvd,Tracy) Sampled 11/23/99 <br /> 1680 Rogers Avenue Project Number 9-8264/3775 Tracy Blvd,Tracy Received 11/24/99 <br /> San Jose CA 95112 Project Manager Scott Boor Reported 12/16/99 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 80ISM/8020M/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analvzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9120145 Date Prepared 1217/99 Extraction Method EPA 5030 waters <br /> Blank 9120145-BLK1 <br /> Gasoline 12/7199 ND ug/1 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 2 50 _ <br /> Surrogate a,a,a-Trrfluorotoluene 300 297 650-135 990, <br /> Surrogate 4-Bromofluorobenzene 300 311 6.50-135 104 <br /> LCS 9120145-BSI <br /> Lsasoline _ 12/7/99 1000 1030 ug/l_ _ _ 65 0-135 103 <br /> Surrogate 4-Bromofluorobenzene 300 304 650-135 <br /> trix S ike 9120145-MSI P912111-08 <br />'quffasohne _ _ 12/7/99 _ 1000 ND 1040 ug/l_ 65 0-135 104_ <br /> ,Surrogate f-Bromofluorobenzene 300 312 _ 650-135 104 <br /> Matrix Spike Dun 9120145-MSD/ P912111-08 <br /> (msolme _ 12/7/99 1000 _ ND _ _ 1050 ug/1 _ 65 0-135 105 20 0 0 957___ <br /> Surrogate 4-Bromofluorobenzene300 315 650-135 105 <br />'OTequoia Analytical- Morgan Hill *Refer to end of report for text of notes and definitions <br /> Page 19 of 20 <br />