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i <br />' STL Submission: 2005-02-0734 <br /> t� <br /> GasIBTEX Fuel Oxygenates by 8260B <br /> SECOR-Sacramento <br /> Attn.: Clint Harms <br /> i3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br />' 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 />' Batch QC Report <br /> Prep(s): 50306 Test(s): 8260B <br />' Matrix Spike ( MS /MSD ) Soil QC Batch #2005102128-2A.69 <br /> MS/MSD Lab ID: 2005-02-0744-001 <br /> MS: 2005102128-2A.69-024 Extracted:02/28/2005 Analyzed: 02/28/2005 09:24 <br />' Dilution: 1.00 <br /> MSD: 2005102128-2A.69-043 Extracted:02/28/2005 Analyzed: 02/28/2005 09:43 <br /> Dilution: 1.00 <br /> ie <br />' Compound Conc. m Kg S k.Leve Recove % Limits% Flags <br /> MS MSD Sample mg/Kg mg/KgMS MSD RPD Rec. RPD M5 MSD <br />' Methyl Cert-butyl ether 0.0380 0.0407 ND 0.046729 81.3 90.4 10.6 65-165 20 <br /> Benzene 0.0475 0.0487 ND 0.046729 101.6 108.1 6.2 69-129 20 <br /> Toluene 0.0510 0.0492 ND 0.046729 109.1 109.2 0.1 1 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 472 462 500 94.4 92.4 72-124 <br /> Toluene-d8 502 501 1 500 100.4 100.2 75-116 <br /> I <br /> Severn Trent Laboratories, Inc. 03/11/200516:07 <br /> STL San Francisco' 1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pert of Sewn Trent Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com"CA DHS FLAP#2496 Page 11 of 13 <br />