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1 <br /> Submission: 2005-02-0540 <br /> STL <br /> GasBTEX 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: 4/050001 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): 50306 Test(s):8260B <br /> Laboratory Control Spike Water QC Batch#2005103101-1-B.65 <br /> LCS 20 0 510 310 1-1.B.65-048 Extracted:03/01/2005 Analyzed: 03/01/2005 08A8 <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) 27.7 25 110.8 65-165 20 <br /> Benzene 25.0 25 100.0 69-129 20 <br /> Toluene 24.8 25 99.2 70-130 20 =r=:: <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 438 500 87.6 73-130 <br /> Toluene-d8 1509 500 101.8 1 81-114 <br /> i <br /> i <br /> Severn Trent Laboratories, Inc. , <br /> 03/02/2005 17:58 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn Trenf Plc Tel 925 484 1919 Fax 925 4841096*www.stl-inc.com*CA DHS ELAP#2496 Page 29 or 36 <br /> I <br /> 4 <br /> E <br /> F <br /> F <br />