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STLSubmission 2005-01-0757 <br /> Gas/BTEX/MTBE by 826OB <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 5886 Received 01/27/2005 14 55 <br /> Conoco Philips Site#5886 <br /> Site 3701 W March Lane, Stockton, CA <br /> Batch QC Report <br /> Prep(s) 50306 Test(s) 82606 <br /> Laboratory Control Spike Water QC Batch #2005102107-1 B 62 <br /> LCS 2005/02/07-1 B 62-041 Extracted 02/07/2005 Analyzed 02/07/2005 07 41 <br /> LCSD <br /> Compound Conc ug/L Exp Conc Recovery% RPDJ Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % I Rec I RPD LCS I LCSD <br /> Methyl tert-butyl ether(MTBE) 290 25 1160 65-165 20 <br /> Benzene 24 0 25 960 69-129 20 <br /> Toluene 258 25 1032 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 476 500 952 73-130 <br /> Toluene-d8 487 500 974181-1141 1 <br /> Severn Trent Laboratories, Inc 02/10/2005 1519 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of 5"em Trent Plc Tel 925 484 1919 Fax 925 484 1096*www sti-inc corn*CA DHS ELAP#2496 page 8 of 11 <br />