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Submission#: 2002-10-0555 <br /> Gas/BTEXFuel Oxygenates by 82608 <br /> San Joaquin Company, Inc. STL San Francisco <br /> 1220 Quarry Lane <br /> Attn.: Dai Watkins Pleasanton,CA 94566 <br /> 1120 Hollywood Ave, Suite 3 <br /> Oakland, CA 94602-1459 Tel:(925)484-1919 <br /> Phone: (510) 336-1772 Fax: (510) 336-9119 Fax:(925)484-1096 <br /> www.st14nc.com <br /> Project: 9902.013 Received: 101251200218:55 www.chromaiab.com <br /> C. Navarra 7500 W. 11 th St. <br /> Site: Tracy CA DHS ELAP#2496 <br /> Batch QC Report <br /> Prep(s): 50306 Test(s).8.260FAB <br /> i Matrix Spike{M51 MSD.) Water. pC Batch k2610,2/1.0/31-01,27 <br /> _...f <br /> MW-8 . » IVIS:. Lab.ID: 200210=0555-'009. <br /> i MS: 2002/10/31-01.2l'-.022 Extracted: 10/31/2002' Analyzed; 10/31/200217:49 <br /> Dilution: ._ 1:00 <br /> MSD: 2002110131-01.27-023. Extracted: 10/31/2002 Analyzed: 10131!200218:14 <br /> Dilution: 1:00 <br /> Compound Cone. ug/L Spk.Leve Recovery Limits% Flags <br /> MS MSD Sample ug/L MS MSD RPD Rec. RPD MS MSD <br /> Benzene 24.7 25.9 NO 25.0 98.8 103.6 4.7 69-129 20 <br /> Toluene 24.9 26.5 NO 25.0 99.6 106.0 6.2 70-130 20 <br /> Methyl tert-butyl ether 29.1 29.6 NO 25.0 116.4 118.4 1.7 65-165 20 <br /> lf= <br /> Surrogate(s) <br /> 1,2-Dirhloroethane-d4 544 526 500 108.8 105.1 76-114 <br /> Toluene-d8 521 523 500 104.2 104.6 88-110 <br /> =J. <br /> 11/04/2002 10:37 STL San Francisco is part of Severn Trent Laboratories,Inc. Page 21 of 22 <br /> V- <br />