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1 <br /> iSTL Submission: 2005-02-0734 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> 1 SECOR-Sacramento <br /> Attn.: Clint Harms <br /> i3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> i Phone: (916)861-0400 Fax: (916)861-0430 <br /> Project: Conoco Philips Site#Circle K Store#1205 Received: 02/24/2005 15:10 <br /> Site: 16470 Cambridge Drive, Lathrop, CA <br /> i <br /> Batch QC Report <br />' Prep(s): 5030E Test(s): 82606 <br /> Matrix Spike ( MS/MSD ) Soil QC Batch#2005103101-1A.69 <br />' DGP-2 0-68 >> MS Lab ID: 2005-02-0734-005 <br /> MS: 2005103101-1A.69-004 Extracted:03/01/2005 Analyzed: 0310'1/200514:04 <br />' Dilution: 1.00 <br /> MSD: 2005103101-1A.69-023 Extracted:03/01/2005 Analyzed: 031011200514:23 <br /> Dilution: 1.00 <br /> lieCompound Conc. m !K S k.Leve Recove % Limits Flags <br /> MS MSD Sample mg/Kg mg/KgMS MSD RPD Rec. RPD MS MSI)— <br /> Methyl <br /> SDMethyl kart-butyl ether 0.0463 0.0411 ND 0.048828 94.8 88.0 7.4 65-165 20 <br />' Benzene 0.0531 0.0422 ND 0.048828 108.7 90.3 18.5 69-129 20 <br /> Toluene 0.0544 0.0459 ND 0.048828 111.4 98.2 12.6 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 440 425 500 88.0 85.0 72-124 <br /> Toluene-d8 548 504 1 1 500 109.6 100.8 1 75-116 <br /> i <br /> 1 <br /> i <br /> 1 <br /> Severn Trent Laboratories, Inc. 03/11!200516:07 <br /> i STL San Francisco" 1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pen of Severn 7rwL Plc Tel 925 484 1919 Fax 925 484 1096-www.sti-inc.com"CA DWS FLAP#2496 Page 12 of 13 <br /> i <br />