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Submission: 2004-09-0783 <br /> STL <br /> Gas/BTEX/MTBE 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# 11195 Received: 09/25/2004 09:55 <br /> Site: 16500 Louise, Lathrop, CA <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260B <br /> Laboratory Control Spike Water- QC Batch#2004110104-26.64 <br /> LCS 2004110104-26.64-002 . Extracted 10104/2004 Analyzed::1.010412004.18:02 <br /> LCSD 2004/10/04-2B.64-025 Extracted:1010412004. Analyzed: 10/0 /2004 18:25 <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) 27.8 24.5 25 111.2 98.0 12.6 65-165 20 <br /> Benzene 21.7 21.9 25 86.8 87.6 0.9 69-129 20 <br /> Toluene 25.3 25.9 25 101.2 103.6 2.3 70-130 20 <br /> Swogates(s) <br /> 1,2-Dichloroethane-d4 486 451 500 97.2 90.2 72-128 <br /> Toluene-d8 516 526 500 103.2 105.2 80-113 <br /> Severn Trent Laboratories, Inc. 10/06/200408:53 <br /> STL San Francisco-1220 Quarry Lane,Pleasanton,CA 94566 <br /> A ped of eevem Trenl Pk Tel 925 484 1919 Fax 925 484 1096-www,stl-inc.com-CA DHS FLAP#2496 Page 5 of 6 <br />