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M <br /> STLSubmission: 2005-01-0225 <br /> Gas/BTEXIMTBE by 8260B <br /> SECOR-Sacramento <br /> Attn.: Amy Draffan <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 is <br /> Phone: (916) 861-0400 Fax: (916)861-0430 <br /> Project: Conoco Philips Site# 11195 Received: 01/10/2005 14:08 <br /> Site: 16500 S. Harlan Rd, Lathrop, CA <br /> i; <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260B <br /> Laboratory Control Spike Water QC Batch#2005!01114-2B.64 ii <br /> i; <br /> LCS 2005101114-28.64-010 Extracted: 01/14/2005 Analyzed: 011141200517:10 s <br /> LCSD G' <br /> Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> Compound <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD EEJ <br /> i <br /> Methyl tert-butyl ether(MTBE) 23.6 25 94.4 65-165 20 <br /> Benzene 23.7 25 94.8 69-129 20 <br /> Toluene 26.1 25 104.4 70-130 20 E <br /> Surrogates(s) is <br /> 1,2-Dichloroethane-d4 456 500 91.2 73-130 <br /> Toluene-d8 505 500 101.0 81-114 s <br /> IJ <br /> 4. <br /> Y. <br /> [F�[ <br /> F� <br /> Fi <br /> Severn Trent Laboratories, Inc. 01/24/2005 14:58 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> Ap M ofS—T-1Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com`CA DHS ELAP#2496 Page 7 of 10 <br /> F <br />