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�7 1 <br /> T Submission 2005-02-0795 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience- Irvine <br /> Attn Antu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Protect 41050001/FA20 Received 02/24/2005 15 10 <br /> Conoco Phillips#5886 <br /> Site 2701 W March Ln , Stockton <br /> Batch QC Report <br /> Prep(s) 50306 _ _ Test(s) 82606 <br /> Matrix Spike ( MS l MSD ) Water QC Batch,#2005/03/08-113 64 <br /> MS/MSD - _ Lab ID 2005-02-0850-001 <br /> MS 2005/03108-18 64-053 Extracted 03/08/2005 Analyzed - 03/08/2005 10 53 <br /> �r Dilution w 4 1 00 <br /> --MSD 2005103108-1B 64-015-- — n- - Extracted 03/08/2005- `-- =- Analyzed X03108/2005-11-15- <br /> Dilution <br /> 11-15- <br /> Dilution r- �1 00 <br /> Compound Conc u /L Spk Level Recove % Limits% Fla s <br /> MS MSD Sample u /L MS MSO RPD Rec RPD MS MSD <br /> Methyl ter!-butyl ether 286 282 NO 25 1144 1128 14 65-165 20 <br /> Benzene 267 265 NO 25 1068 1060 0 8 69-129 20 <br /> Toluene 289 285 NO 25 1156 1140 14 70-130 20 <br /> Surrogate(s) <br /> 1 2-Oichloroethane-d4 503 516 500 1006 1032 73-130 <br /> Toluene-d8 505 517 500 101 D 11034 81-114 <br /> • <br /> Severn Trent Laboratories, Inc 03/11/2005 15 26 <br /> STL San Francisco'1220 Quarry Lane, Pleasanton,CA 94566 <br /> A pan.1 S—em Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc com'CA DHS FLAP#2496 Page 29 of 31 <br />