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ST L submission: 2005-05-0809 <br /> Gas/BTEK Fuel Oxygenates by 82608 <br /> TRC Alton Geoscience-Irvine <br /> Attn.: Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <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): 5030B - Test(s); 8260E <br /> Laboratmy Control Spike Water QC Batch#2005106108-113169 <br /> 20051LCS 8 ... Extradted.06/08/2005 Anal lyzed: 06/08/2005 08.59 <br /> Liws-CSD <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tort-butyl ether(MTBE) 22.5 25 90.0 65-165 20 <br /> Benzene 24.0 25 96.0 69-129 20 i=j <br /> Toluene 25.0 25 100.0 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 459 500 91.8 73-130 <br /> Toluene-d8 479 500 95.8 61-114 <br /> I <br /> Severn Trent Laboratories, Inc. 06/14/2005 16:1 j <br /> I <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part or 5"-m Tmm Plc Tel 925 484 1919 Fax 925 484 1096"www.stl-inc.com"CA DHS ELAP#2496 Page 27 of 33 <br />