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w STL <br /> Submission# 2004-01-0604 <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 /> Protect 11192 Received 01/22/2004 13 30 <br /> Site 1403 County Club Drive , Stockton, CA <br /> Batch QC Report <br /> Prep(s) 50306 Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004101/30-02 64 <br /> LCS 2004/01/30-02 64-014 Extracted 01/30/2004 Analyzed 01/30/2004 17 14 <br /> LCSD 2004/01130-02 64-036 Extracted 01/30/2004 Analyzed 01/30/2004 17 36 <br /> Compound Conc ug1L Exp Conc Recovery% RPDJ Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % I Rec RPD LCS LCSD <br /> Benzene 242 242 250 968 968 0 0 69-129 20 <br /> Toluene 247 252 25 0 988 1008 2 0 70-130 20 <br /> Methyl tent-butyl ether{MTBE) 228 237 250 91 2 948 3 9 65-165 20 <br /> Surrogates(s) <br /> Toluene-d8 482 479 500 96 4 95 8 88-110 <br /> 1,2-Dichloroethane-d4 456 463 500 91 2 1926 1 1 76-114 <br /> Severn Trent Laboratories, Inc 02/0312004 10 45 <br /> STL San Francisco* 1220 Quarry Lane Pleasanton CA 94566 <br /> A PM Of Severn T—i Pic Tel 925 484 1919 Fax 925 484 1096*www st1-inc corn*CA DHS ELAP#2496 Page 6 of 8 <br />