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ST L Submission: 2005-03-0709 <br /> Gas/BTEXFuel Oxygenates by 8260B (High Level) <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#2005/03/25-3B.62 <br /> LCS 2005/03/25-3B.62-021 Extracted: 03/25/2005 Analyzed: 03/25/200512:21 <br /> LCSD 2005/03/25-38.62-047 Extracted: 03/25/2005 Analyzed: 03/25/200512:47 <br /> Compound Conc. mg/Kg Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Benzene 11.3 10.5 10 113.0 105.0 7.3 69-129 20 <br /> Toluene 12.0 11.2 10 120.0 112.0 6.9 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 11.0 9.16 10 110.0 91.6 18.3 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 253 234 250 101.2 93.6 53-129 <br /> Toluene-d8 280 254 250 112.0 101.6 47-136 <br /> Severn Trent Laboratories, Inc. 03/28/2005 17:18 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A Psi of SO—Trent Pic Tel 925 484 1919 Fax 925 484 1096"www.sti-inc.com'CA DHS ELAP#2496 Page 5 of 6 <br />