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STLSubmission 2005-01-0758 <br /> iGas/BTEX Fuel Oxygenates by 8260B <br /> SECOR-Sacramento <br /> Attn Amy Draffan <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> Phone (916)861-0400 Fax (916) 861-0430 <br /> Project 77CP 60004 01 0192 Received 01/27/2005 14 55 <br /> Conoco Philips Site#11192 <br /> Site 1403 Country Club Dr , Stockton, CA <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 82608 <br /> Matrix Spike ( MS 1 MSD ) Water QC Batch #2005102104-1A 68 <br /> MW-4 » MS Lab ID 2005-01-0758- 002 <br /> MS 2005102104-1A 68-012 Extracted 02/04/2005 Analyzed 02/04/2005 11 12 <br /> Dilution 100 <br /> MSD 2005102104-1A 68-030 Extracted 02/04/2005 Analyzed 02/04/2005 11 30 <br /> . Dilution 100 <br /> Compound Conc ug!L S k Leve Recove % Limits% Flags <br /> MS MSD Sample u 1L MS MSD RPD Rec RPD MS MSD <br /> Methyl tent-butyl ether 384 354 29 25 1420 1300 88 65-165 20 <br /> Benzene 327 31 6 NO 25 1308 1264 34 69-129 20 M4 <br /> Toluene 349 320 NO 25 1396 1280 87 70-130 20 M4 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 485 496 500 970 992 73-130 <br /> Toluene-d8 574 524 1 500 11148 11048 1 81-114 1 1 S7 <br /> Severn Trent Laboratories, Inc 02/10/200512 35 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A pal of Sevem Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc com"CA DHS FLAP#2496 Page 8 of 10 <br />