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S1 L <br /> Submission: 2005-07-0597 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience- Irvine <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: 07/21/2005 14:20 <br /> Conoco Phillips#01205 <br /> Site: 16470 Cambridge Dr. Lathrop <br /> ` <br /> Batch QC Report, <br /> Preps) 50308 Tests) 8260B <br /> Matrix Spike ( MS 1 MSD ) Water QC Batch#2005/08/01A B.65,: <br /> MS/MSD <br /> - Lab EDF <'2005-07-0671. <br /> S: 2005/08/01 2005/08/01 18 65-033 Extracted:08/01/2005 Analyzed. 08/01/2005 10.33':= <br /> ms <br /> Dfluti,on 5 00 <br /> MSD 2005/08/01 18 65=059 Exfracted 08/0112005 °Analyzed 08/01/2005 10 59.;` <br /> Dilution .�5 00 <br /> Compound Conc. uglt pk.Leve Recovery% Limits% Flags <br /> Ms MSD Sample ug/L MS MSD RPD Rec, RPD MS MSD <br /> Methyl tert-butyl ether 158 247 105 125 42.4 113.6 91.3 65-165 20 M5 R1 <br /> Benzene 177 202 87.8 125 71.4 91.4 24.6 69-129 20 R1 <br /> Toluene 108 120 8.18 125 79.9 89.5 11.3 70-130 20 <br /> Surrogates) <br /> 1,2-Dichloroethane-d4 378 495 500 75.6 99.0 73-130 <br /> Toluene-d8 454 453 A 1 500 90.8 190.6 1 181-114 <br /> Severn Trent Laboratories, Inc. 08/03/2005 14:42 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A Part of S-OM Tom„t Pic Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com"CA DHS ELAP#2496 Page 30 of 33 <br />