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[w7 (ta <br /> Submission: 2004-10-0468 <br /> S T L <br /> Gas/BTEX Fuel Oxygenates by 8260B • <br /> TRC Alton Geoscience- Irvine <br /> Attn.:Anju Farfan <br /> 21 Technology Drive <br /> Irvine,-CA-927-18 <br /> Phone: (949) 341-7440 Fax: (949) 753-0111 <br /> Project: 41050001 FA20 Received: 10/14/2004 11:25 <br /> Conoco Phillips#01205 <br /> Site: 16470 Cambridge Street, Lathrop <br /> Batch QC Report <br /> Prep(s): 50308 Test(s): 8260B <br /> Laboratory Control Spike Water QC Batch#2004/10/24-1 B.66 <br /> LCS 2004/10/24-1 B.66-040 Extracted: 10/24/2004 Analyzed: 10/24/2004 07:40 <br /> LCSD <br /> r`,,..,....und I Conc. ua/L exo_Conr.. RarnvPry o IPPnJ C'tr1 I imitc o/1 Flana <br /> LCS LCSD LCS I LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 29.7 25 118.8 65-165 20 <br /> Benzene 27.4 25 109.6 69-129 20 <br /> Toluene 24.3 25 97.2 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichioroethane-d4 448 500 89.6 72-128 <br /> Toluene-d8 463 500 92.6_ 80_113_ <br /> Severn Trent Laboratories Inc. 10/28/2004 14:310 <br /> STL San Francisco'1220 Quarry Lane, Pleasanton,CA 94588 <br /> A part of Severn Tient Plc Tel 925 484 1919 Fax 925 484 1096"www.stl-inc.com'CA DWS FLAP#2496 Page 20 of 24 <br />