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Submission: 2005.04-0633 <br /> STL <br /> Fuel Oxygenates by 8260B <br /> Treadwell &Rollo-San Francisco <br /> Attn.: David Dixon <br /> 555 Montgomery Street.Suite 1300 <br /> San Francisco,CA 94111-2554 <br /> Phone: (415)955-9040 Fax: (415)955-9041 <br /> Project: 2597.10 Received: 04/20/2005 14:00 <br /> Carando <br /> Batch QC Report <br /> i <br /> Prep(s): 5030B Test(s):8260B <br /> Matrix Spike( MS/MSD) Soil QC Batch#2005/04/28-03.62 <br /> MS/MSD Lab ID: 2005-04=0612-002 <br /> MS: 2005/04/28-03.62-031 Extracted:04/28/2005 Analyzed: 04/28/2005 20:31 <br /> Dilution: 1.00 <br /> MSD: 2005/04/28-03.62-057 Extracted:04/28/2005 Analyzed: 04/28/2005 20:57 ` <br /> Dilution: 1.00 <br /> Compound Cone. ug/Kg pkIevell Recove % Limits% Flags, <br /> MS MSD Sample ug/Kg MS MSD RPD Rec. RPD MS MSD <br /> Methyl tert-butyl ether 37.3. 43.5 ND 46.8 79:7 93.1 15.5 65-165 20 <br /> f Benzene 46.9 56.2 ND 46.8 100.2 120.3 18.2 69-129 20 <br /> Toluene 49.9 57.3 ND 46.8 106.6 122.7 14.0 70-130 20 <br /> I Surrogate(s) <br /> 1,2-Dichloroethane-d4 532 514 500 106.4 102.8 72-124 <br /> Toluene-d8 532 527 500 106.4 105.4 75-116 <br /> I <br /> i <br /> Severn Trent Laboratories, Inc. 05/04/200513:06 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn hent Plc Tel 925 484 1919 Fax 925 484 1096*www.sti-ine.com*CA DHS ELAP#2496 Page 14 of 15 <br />