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Mm m�40 S T L Submission: 2005-05-0809 <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geoscience- Irvine <br /> Attn.: Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92798 <br /> Phone: (949)341-7440 Fax: (949)753-0111 <br /> Project: 41050001 FA20 Received: 05/31/2005 16:13 <br /> Conoco Phillips# 11195 <br /> Site: 16500 South Interstate 5, Lathrop <br /> Batch QC Report <br /> Prep(s): 50306 Test(5). 82608 <br /> Laboratory Control Spike Water QC Batch#20051.06107-4B-69 <br /> LCS20051061076.69=024 Extracted 06/07/2005 Analyzed: 06/07/20051Z:24 <br /> Compound Cone. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyi Cert-butyl ether(MTBE) 26.0 25 104.0 65-165 20 ' == <br /> Benzene 25.6 25 102.4 69-129 20 '-`_3= <br /> Toluene 24.3 25 97.2 70-930 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 417 500 83.4 73-130 <br /> Toluene-d8 451 500 90.2 89-114 <br /> Severn Trent Laboratories, Inc. 06/14/2005 1161ir <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Sevem Trent Plc Tel 925 484 1919 Fax 925 484 1 096*www.stl-inc.com*CA QHS FLAP#2496 Page 25 of 33 <br /> I <br />