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W Submission 2005-02-0795 <br /> STL i <br /> GasIBTEX 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 02/24/2005 15 10 <br /> Conoco Phillips#5886 <br /> Site 2701 W March Ln , Stockton <br /> Batch QC Report <br /> Prep(s) 50308 Test(s) 82606 <br /> Matrix Spike ( MS 1 MSO ) Water QC Batch #2005103109-01 07 <br /> MS/MSD Lab ID 2005-03-0012 -002 <br /> MS 2005/03/09-01 07-006 Extracted 03/09/2005 Analyzed 03/09/2005 18 55 <br /> Dilution 1 00 <br /> MSD 2005103/09-01 07-007 Extracted 03/09/2005 Analyzed 03/09/2005 19 26 <br /> Dilution 1 00 <br /> Compound Conc ug/L Spk Level Recove % Limits% Flags <br /> MS MSD Sample ug/L MS I MSD I RPD Rec RPD MS MSD <br /> Benzene 251 25 6 349 250 864 1024 1169 69-129 20 <br /> Toluene 251 255 179 25 0 932 1020 90 70-130 20 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-d4 491 1454 500 98 2 908 73-130 <br /> Severn Trent Laboratories, Inc 03/11/2005 15 26 <br /> STL San Francisco"1220 Quarry Lane Pleasanton CA 94566 <br /> Apert at Severn Trent Pic Tel 925 484 1919 Fax 925 484 1096'www stl-inc com'CA DHS€LAP#2496 Page 30 of 31 <br />