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STLSubmission 2005-01-0006 <br /> Gas/BTEX Fuel Oxygenates by 82608 <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 6981 Received 12/30/2004 14 00 <br /> Conoco Philips Site#6981 <br /> Site 4707 Pacific Ave ,Stockton, CA <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 82606 <br /> Laboratory Control Spike Water QC Batch#2005101105-1B 62 <br /> LCS 2005101105-1 B 62-029 Extracted 01/05/2005 Analyzed 01/05/2005 07 29 <br /> LCSD <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS I LCSD <br /> Methyl tert-butyl ether(MTBE) 215 25 860 65-165 20 <br /> Benzene 222 25 888 69-129 20 <br /> Toluene 225 25 900 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 419 500 1838 73-130 <br /> Toluene-d8 460 500 920 1 81-114 <br /> Severn Trent Laboratories, Inc <br /> 0111412005 16 16 <br /> STL San Francisco' 1220 Quarry Lane,Pleasanton,CA 94566 <br /> Aparta S"em Trent Plc Tel 925 484 1919 Fax 925 484 1096"www stl-inc com-CA DHS ELAP#2496 Page 6 of 9 <br />