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STLSubmission#: 2003-01-0323 <br /> -f 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: (510) 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 /> =3 Batch QC Report <br /> Prep(s): 50308 :Test(s): 8260FAB <br /> Matrix Spike (MS I MSD ) Water QC Batch#2003101126-01.27 <br /> MW-3A » MS Lab ID: 2003-01-0323 - 004 <br /> !" `I MS: 2003101126-01.27-007 Extracted:01/26/2003 Analyzed: 01/26/2003 17:47 <br /> -'i <br /> Dilution: 1.00 <br /> MSD: 2003101126-01.27-008 Extracted:01/26/2003 Analyzed: 011261200318:08 <br /> . , Dilution: 1.00 <br /> Compound Cone. ug/L Spk.Level Recovery Llmits% Flags <br /> _r7 MS MSD Sample ug/L MS MSD RPD Rec. RPD M5 MSD <br /> )=` Benzene 20.3 20.3 ND 25.0 81.2 81.2 0.0 69-129 20 <br /> Toluene 21.2 21.2 ND 25.0 84.8 84.8 0.0 70-130 20 <br /> Methyl tert-butyl ether 22.7 22.7 ND 25.0 90.8 90.8 0.0 65-165 20 <br /> surrogate(s) <br /> f, <br /> 1,2-Dichloroethane-d4 493 494 500 98.6 96.8 76-114 0 <br /> Toluene-de 495 496 500 99.0 99.2 1 88-110 1 D <br /> I <br /> `i <br /> _ I <br /> i <br /> 01/29/2003 11:03 <br /> Severn Trent Laboratories, Inc. <br /> f STL San Francisca"1220 Quarry Lane,Pleasanton,CA 94566 <br /> - A part of Sevem Tlenl Plc Tel 925 484 1919 Fax 925 484 1096`www.stl-inc.com*CA DHS ELAP#2496 Page 23 of 24 is <br /> F <br />