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STL Submission# 2004-01-0604 <br /> E <br /> Gas/BTEX Fuel Oxygenates by 82606 <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 11192 Received 01/22/2004 13 30 <br /> Site 1403 County Club Drive , Stockton, CA <br /> Batch QC Report <br /> i <br /> Prep(s) 50306 Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch #2004101131-1A 65 <br /> LCS 2004/01/31-1 A 65-058 Extracted 01/31/2004 Analyzed 01/31/2004 10 29 <br /> LCSD 2004/01/31-1A 65-057 Extracted 01/31/2004 Analyzed 01/3112004 09 57 <br /> Compound Cone ug/L Exp Conc Recovery% RPDJ Ctrl Limits%I Flags <br /> LCS LCSD LCS LCSD % Rec RPDI LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 282 233 25 1128 932 190 65-165 20 <br /> Benzene 1 255 228 25 1020 91 2 11 2 69-129 20 <br /> Toluene 250 232 25 1000 928 7 5 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 525, 502 500 1050 100 4L 76-114 <br /> Toluene-d8 502 515 500 100 4` 103 0 88-110 <br /> Severn Trent Laboratories, Inc 0210312004 045 <br /> STL San Francisco* 1220 Quarry Lane, Pleasanton CA 94566 Page 7 of 8 <br /> A part or Severn Trent Plc Tel 925484 1919 Fax 925 484 1096"www sti-inc com'CA DHS FLAP#2496 <br />