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__ _____ <br /> ST L Submission: 2005-06-0198 <br /> Gas/BTEX 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: 06/07/2005 16:50 <br /> Conoco Phillips# 11195 <br /> Site: 16500 S. Interstate 5 Lathrop <br /> Batch QC Report.' <br /> Prep(s); .' 50309.1 Testws 82606 <br /> Matrix.Spike( M51 MSD::).!.:;'..' . WaterQC:,i3atch#2005t06120-2G.62 <br /> MSIMS .. Lab ID: .2005-06-0297-001 <br /> MS <br /> 2006106/20-2C.62-0.34::- Extracted:06/20/2005 " Analyzed., 06/2012005:21-34 <br /> Dilution:. 1.00 <br /> T. MSD,2005106!20-2C.62 047 Extracted 06/20/2005 Analyzed 06/20/2005 22:00 <br /> pdutfon:. 1:00 <br /> Compound Conc. uglL Spk.Level Recovery% Limits% Flags <br /> MS MSD Sample ug/L MS MSD RPD Rec. RPD MS MSD <br /> Methyl tert-butyl ether 22.6 24.0 ND 25 90.4 96.0 6.0 65-165 20 <br /> Benzene 21.2 21.2 ND 25 84.8 84.8 0.0 69-129 20 <br /> Toluene 21.3 21.6 ND 25 85.2 86.4 1.4 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 557 572 500 111.3 114.4 73-130 <br /> Toluene-d8 515 505 500 102.9 101.0 1 81-114 <br /> I <br /> i <br /> I <br /> I <br /> f ` I <br /> Severn Trent Laboratories, Inc. 06/24/2005 17:30 <br /> STL San Francisco,1220 quarry Lane.Pleasanton,CA 94566 <br /> Apart of Sewm Tre[Plc Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com*CA DHS ELAP#2496 Page 12 of 13 <br />