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ST L Submission: 2004-12-0056 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience- Imine <br /> Attn.: Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone: (949)341-7440 Fax: (949)753-0111 <br /> Project: 41050001 FA20 Received: 11/30/2004 16:07 <br /> Conoco Phillips#11195 <br /> Site: 16500 S. interstate 5 <br /> Batch QC Report <br /> Prep(s): 50308 Test(s):8260FAB. <br /> Matrix Spike(MS 1 MSD ) Water QC Batch#2004/12108-1 S.64 <br /> MS/MSD Lab ID: 2004-12-0137 002 <br /> MS: 2004112108-1S.64-018 Extracted:12/08/2004 Analyzed: 121061200410:18 <br /> Dilution: 1 A0 <br /> MSD: .2004/12/08-1 S.64-040 Extracted: 12/08/2004 Analyzed: 12/081200410:40 <br /> Dilution: 1..00 <br /> Compound Conc. ulL Spk.Levell Recovery% Limits% Flags <br /> MS MSD Sample ug1L I MS MSD I RPD Rec. RPD MS MSD <br /> Benzene 25.6 24.6 ND 25 102.4 98.4 4.0 69-129 20 <br /> Toluene 25.4 24.6 ND 25 101.6 98.4 3.2 70-130 20 <br /> Methyl tert-butyl ether 25.3 24.8 ND 25 101.2 99.2 2.0 65-165 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 461 458 500 92.2 91.6 73-130 <br /> Toluene-d8 463 466 500 92.6 93.2 81-114 <br /> Severn Trent Laboratories, Inc. 1211412004 1137 <br /> STL Sart Francisco* 1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part d Severn hent Pk Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com*CA DHS FLAP#2496 Page 46 of 50 <br />