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STLSubmission# 2004-05-0816 <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 Conoco Philips Site# 11192 Received 05/21/2004 12 35 <br /> Site 1403 Country Club Blvd, Stockton <br /> r <br /> Batch QC Report <br /> 3 - <br /> Prep(s) 50306 n Test(s) 8260FAB <br /> Laboratory Control Slilke Water- n { Y OC'Batch#2004106102-1C 66 <br /> LCS '2004/06/02-1 C 66-047} Extracted 10610212004 Analyzed{06/02/2004 06 47 <br /> LCSD f 2004106102-1 C 66-,011 Extracted X0610212004 AnalyzedM 06/02/2004 07 11 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 226 232 25 904 928 26 69-129 20 <br /> Toluene 236 23 8 25 94 4 952 08 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 215 220 25 860 880 23 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 468 478 500 936 956 72-128 <br /> Toluene-d8 521 519 500 104 2 103 8 1 180-1131 <br /> Laboratories, Inc 06/03/200410 <br /> Severn Trent L , <br /> STL. San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pert d seam Tml Plc Tel 926 484 1919 Fax 925 484 1096'www stl-inc com'CA OHS ELAP#2496 Page 7 of 8 <br />