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re <br /> Submission # 2004-04-0042 <br /> STL <br /> b <br /> GasIBTEX Fuel Oxygenates y 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 2390SEC550/551 Received 04/01/2004 15 40 <br /> Conoco Philips Site#11192 <br /> Site 1403 Country Club Blvd , Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004104107-1D 65 <br /> LCS 2004104/07-1 D 65-024 Extracted 04/07/2004 Analyzed 04/07/2004 09 24 <br /> LCSD 2004/04/07-1 D 65-048 Extracted 04/07/2004 Analyzed 04/0712004 09 48 <br /> 3 <br /> Compound Conc ug/L Exp Conc Recovery% JRPDJ Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 229 192 25 916 768 176 65-165 20 <br /> Benzene 232 227 25 92 8 908 2 2 69-129 20 <br /> Toluene 224 21 7 25 89 6 868 3 2 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 467 455 500 934 <br /> 91 0 76-114 <br /> Toluene-d8 494 512 500 988 102 4 88-110 <br /> • <br /> Severn Trent Laboratories, Inc 04109/2004 18 53 <br /> STL San Francisco" 1220 Quarry Lane Pleasanton CA 94566 Page 7 of 8 <br /> APen 015eve n Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc com"CA DHS ELAP#2496 <br />