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STL Submission# 2004-04.0042 <br /> r <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 2390SEC550/551 Received 04101/2004 15 40 <br /> Conoco Philips Site#11192 <br /> Site 1403 Country' Club Blvd , Stockton <br /> 3 ' <br /> Batch QC Re ort <br /> Prep(s) 50306 Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004104106-1 D 64 <br /> LCS 2004104/06-1 D 64-002 Extracted 04/06/2004 Analyzed 04/06/2004 08 02 <br /> LCSD 2004104106-1 D 64-024 Extracted 04/06/2004 Analyzed 04/0612004 08 24 <br /> Compound Conc ug/L Exp Conc Recovery % RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 222 227 25 888 90`8 22 65-165 20 <br /> Benzene 242 257 25 •, 968 1028 60 69-129 20 <br /> Toluene 24 9 239 25 996 95 6 41 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 425 420 500 850 84 0 76-114 <br /> Toluene-d8 460 11468 1500 92 0 193 6 88-110 <br /> Severn Trent Laboratories, Inc <br /> 04/09/2004 1�3 <br /> STL San Francisco" 1220 Quarry Lane Pleasanton CA 94566 <br /> A part of Sa,ern Trent Pic Tel 925 484 1919 Fax 925 484 1096`www stl-inc corn'CA DHS Ei AP#2496 page 6 of 8 <br />