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i <br /> R <br /> STT Submission: 2005-02-0540 <br /> iota <br /> Gas/BTEX Fuel Oxygenates by 8260B <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: 02/16/2005 12:18 <br /> Conoco Phillips# 11195 <br /> Site: 16500 S. Interstate 5 Lathrop <br /> Batch QC Report <br /> Prep(s): 50308 Test(s): 8260.B <br /> Laboratory Control Spike Water QC Batch#2005102!25-2A:62 <br /> LCS 2005102125-2A.62-008 Extracted: 02/25/2005 Analyzed: 0212512005-08:0.8. <br /> LCSD <br /> Compound Cone. ug1L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl Pert-butyl ether(MTBE) 23.6 25 94.4 65-165 20 <br /> Benzene 21.6 25 86.4 69-129 20 <br /> Toluene 21.2 25 84.8 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-& 512 500 102.4 73-130 <br /> Toluene-d8 537 500 107.4 81-114 <br /> G <br /> F <br /> 4 <br /> E <br /> I <br /> 03/0212005 17:58 <br /> Severn Trent Laboratories, Inc. <br /> STL San Francisco*1220 Quarry Lane,Pleasanlon,CA 94566 <br /> A part or Sevem Trent Plc Tel 925 484 1919 Fax 925 484 1096'www.sll-Inc.com"CA DHS ELAP#2496 Page 26 of 36 <br /> 1 <br />