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STLSubmission: 2005-05-0417 <br /> ` Gas/BTEX/MTBE by 8260B <br /> �i <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: 77CP.60004.01.3621 Received: 05/13/2005 12:40 <br /> Conoco Philips Site#11195 <br /> Site: 16500 Louis Ave., Lathrop, California <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 82606 <br /> Laboratory Control Spike Water QC Batch#2005105122-1 B.64 <br /> LCS 2005105122-113.64-048 Extracted: 05/22/2005 Analyzed: 05/22/2005 07:48 <br /> LCSD <br /> Compound Conc. uglL Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 25.8 25 103.2 65-165 20 <br /> t Benzene 23.6 25 94.4 69-129 20 <br /> Toluene 28.2 25 112.8 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 561 500 112.2 73-130 <br /> Toluene-d8 536 500 107.2 81-114 <br /> i <br /> Severn Trent Laboratories, Inc. 05/24/2005 115:07 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton,CA 94566 j <br /> Apart or Sevem Tient Plc Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com"CA DHS ELAP#2495 Page 5 of 6 <br />