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Submission 2004-11-0844 <br /> NVINNILMIll <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 11/29/2004 18 20 <br /> Conoco Phillips#5886 <br /> Site 2701 West March Lane <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FAB <br /> Matrix Spike ( MS 1 MSD ] Water QC Batch#2004112104-2B 66 <br /> MS/MSD Lab ID 2004-12-0041 -004 <br /> MS 2004112104-28 66-001 Extracted 12/05/2004 Analyzed 12/05/2004 02 01 <br /> Dilution 1 00 <br /> MSD - 2004/12104-2B 66-023__-- Extracted_1 2/05/2004--Analyzed 12/05/2004 02 23 <br /> Dilution 100 <br /> Compound Conc u tL 4k Leve Recwve % Limits% Fla s <br /> MS MSD Sample u /L MS MSD RPD Rec RPD MS MSD <br /> Benzene 277 285 ND 25 1108 1140 28 69-129 20 <br /> Toluene-_- r - - 31 3 - 33 1-- ND 25 -- 1252- 1324 56 = 70-130 - -20 - M4- <br /> Methyl tert-butyl ether 276 295 ND 25 1100 1180 7 0 65-165 20 <br /> —Surrogate(s) <br /> 1 2-Dichloroethane-d4 444 459 500 888 918 73-130 <br /> Toluene-d8 506 524 500 1012 104 8 81-114 <br /> Severn Trent Laboratories, Inc 12/08/2004 19 040 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn rrern Pic Tel 925 484 1919 Fax 925 484 1 096'www stl-inc com a CA DHS ELAP#2496 Page 15 of 16 <br />