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T'L <br /> Submission: 2005-09-0606 <br /> Sh <br /> Gas/BTEXIMTBE 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: 77CP.60004.04.0195 Received: 09/22/2005 07:25 <br /> Conoco Philips Site# 11195 <br /> Site: 16500 Louis Ave., Lathrop, California <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260B <br /> Laboratory Control Spike Water QC Batch #2005!09126-1D.68 <br /> LCS 2005109126-1 D.68-026 Extracted: 09/26/2005 Analyzed: 09/26/2005 08:26 <br /> LCSD <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) 25.6 25 102.4 65-165 20 <br /> Benzene 23.0 25 92.0 69-129 20 <br /> Toluene 25.2 25 100.8 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 413 500 82.6 73-130 <br /> Toluene-d8 526 500 105.2 81-114 <br /> Severn Trent Laboratories, Inc. 09/30/2005 17 33 <br /> STL San Francisco' 1220 Quarry Lane, Pleasanton,CA 94566 <br /> n ua,o sever,1, Fig Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.corn`CA DHS ELAP#2496 Page 5 of 7 <br />