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MEN <br /> STL Submission 2005-01-0008 <br /> Gas/BTEX Fuel Oxygenates by 8260B <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 0192 Received 12/30/2004 14 00 <br /> Conoco Philips Site#11192 <br /> Site 1403 Country Club Dr , Stockton, CA <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260B <br /> Laboratory Control Spike Water QC Batch#2005101107-1 B 64 <br /> LCS 2005101107-1 B 64-001 Extracted 01/07/2005 Analyzed 01/07/2005 07 01 <br /> LCSD <br /> Compound Conc ug/L Exp Conc Recovery%' RPDJ Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPR LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 220 25 880 65-165 20 <br /> Benzene 226 25 904 69-129 20 <br /> Toluene 230 25 92 0 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 483 500 96 6 73-130 <br /> Toluene-d8 485 500 97 0 81-114 <br /> Severn Trent Laboratories, Inc 01/14/2005 16 24 <br /> STL San Francisca`1220 Quarry Lane Pleasanton CA 94566 <br /> A W Severn Trent PIC Tel 925 484 1919 Fax 925 484 1096'www sti-ane com'CA DHS FLAP#2496 Page 7 of 10 <br />