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STLSubmission: 2005-03-0709 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> SECOR-Sacramento <br /> Attn.: Clint Harms <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> Phone: (916) 861-0400 Fax: (916) 861-0430 <br /> Project: 77CP.67425.00.0002 Received: 03/22/2005 18:00 <br /> Conoco Philips Site#2787245 <br /> Site: 1206 East March Lane, Stockton, CA <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260B <br /> Laboratory Control Spike Soil QC Batch#2005/03/25-2A.69 <br /> LCS 2005/03/25-2A.69-044 Extracted: 03/25/2005 Analyzed: 03/25/200510:44 <br /> LCSD <br /> Compound Conc. mg/Kg Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 0.0577 0.05 115.4 65-165 20 <br /> Benzene 0.0552 0.05 110.4 69-129 20 <br /> Toluene 0.0626 0.05 125.2 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 482 500 96.4 72-124 <br /> Toluene-d8 561 500 112.2 75-116 <br /> Severn Trent Laboratories, Inc. 03/28/200517:17 <br /> STL San Francisco' 1220 Quarry Lane,Pleasanton,CA 94566 <br /> A u rl of S.—T—(Pk Tel 925 484 1919 Fax 925 484 1096'www.stl-ine.com'CA DHS ELAP#2496 Page 14 of 17 <br />