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STLSubmission # 2003-07-0859 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> Gettler Ryan <br /> Attn Deanna Harding <br /> 6747 Sierra Court Suite J <br /> Dublin, CA 94568 <br /> Phone (925) 551-7444 Fax (925) 551-7899 <br /> Protect 180238 80 Received 07/29/2003 10 15 <br /> Conoco #4409 <br /> Site 1502 N Fl Dorado St , Stockton, CA <br /> Batch QC Report <br /> Prep(s) 5030E Test(s) 8260FAB <br /> Matrix Spike ( MS 1 MSD ) Water QC Batch#2003108109-18.64 <br /> MW-14 >> M5 Lab ID 2003-07-0859-014 <br /> MS 2003108109-1 B 64-025 Extracted 08/09/2003 Analyzed 08/09/2003 18 25 <br /> Dilution 1 00 <br /> MSD 2003108109-1 B 64-047 Extracted 08/09/2003 Analyzed 08/09/2003 18 47 <br /> Dilution 1 0 <br /> Compound Conc u IL Spk Leve Recove % Limits% Flags <br /> Ms MSD Sam le u /L MS MSD RPD Rec RPD MS MSD <br /> Benzene 26 0 269 ND 25 104 0 1076 34 69-129 20 <br /> Toluene 25 2 267 ND 25 1008 1068 58 70-130 20 <br /> Methyl tert-butyl ether 264 252 ND 25 1056 1008 47 65-165 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 582 550 500 1163 109 9 76-114 sh <br /> Toluene-d8 484 506 500 968 1012 88-110 <br /> Severn Trent Laboratories, Inc 08/12/200310 55 <br /> STL San Francisco' 1220 Quarry Lane,Pleasanton,CA 94566 <br /> Apart of Severn Trent Pic Tel 925 484 1919 Fax 925 484 1096*www stl-inc com*CA DHS FLAP#2496 Page 21 of 22 <br />