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0A <br /> STLSubmission#: 2003-01-0323 <br /> Gas/BTEXFuel Oxygenates by 8260B <br /> San Joaquin Company, Inc. <br /> Attn.: Dai Watkins <br /> 1120 Hollywood Ave, Suite 3 <br /> Oakland, CA 94602-1459 <br /> Phone: (510) 336-1772 Fax: (51 G) 336-9119 <br /> Project: 9902.013 Received: 01/20/2003 16:24 <br /> C. Navarra <br /> Site: 7500 W. 11th St. <br /> Tracy, CA <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260FAB <br /> `. Matrix Spike f MS l MSD Water QC Batch:#2003/01122-01.27 <br /> MW-1 » MS Lab ID: 2003-01-0323 - 001 <br /> MS: 2003101!22-01:27-011 Extracted:01/22/2003 Analyzed: 011221200315:31 <br /> Dilution: 1.00 <br /> MSD: 2003101122-01.27-012 Extracted:01/22/2003 Analyzed: 011221200315:53 <br /> Dilution: 1.00 <br /> Compound Conc. ug/L S k.Level Recovery Limits% Flags <br /> MS MSD Sample uglL M5 MSD RPD Rec. RPD M5 MSD <br /> Benzene 21"1 20,9 NO 25.0 84.4 83.6 1"0 69-129 20 <br /> Toluene 21.8 21.9 ND 25.0 87,2 87.6 0.5 70-130 20 <br /> Methyl lert-butyl ether 24.1 24.1 ND 25.0 96"4 96.4 0.0 65-165 20 <br /> f <br /> surrogate(s) <br /> 1,2-Dichloroethane-d4 471 479 500 94,1 95.8 76.114 <br /> Toluene-d8 489 481 500 97.8 96.2 88-110 <br /> 1 Severn Trent Laboratories, Inc. 01!291200311:03 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn Tfent Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com"CA DHS FLAP*2496 Page 22 of 24 <br /> irXl <br />