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® '!)TL Submission: 2005-01-0289 <br /> AB' � <br /> • GaslBTEX 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: 01/11/2005 17:17 <br /> Conoco Phillips#01205 <br /> Site: 16470 Cambridge St. Lathrop <br /> Batch QC Report <br /> Prep(s): 50306 Test(s): 8260E <br /> Matrix Spike ( MS/MSD ) Water QC Batch#2005/01119-1B.64 <br /> MS/MSD Lab ID: 2005-01-0351 -001 <br /> MS: 2005101119-1 B.64-038 Extracted:01/19/2005 Analyzed: 01/19/2005 08:38 <br /> Dilution: 1.00 <br /> MSD: 2005101119-1 B.64-019 Extracted: 01/19/2005 Analyzed: 01/19/2005 09:00 <br /> . Dilution: 1.00 <br /> Compound Conc. ug1L Spk.Level Recovery% Limits% Fla s <br /> MS MSD Sample ug/L MS MSD RPD Rec. RPD MS MSD <br /> Methyl ter!-butyl ether 39.5 42.5 16.1 25 93.6 105.6 12.0 65-165 20 <br /> Benzene 25.0 26.9 1.9 25 92.4 100.0 7.9 69-129 20 <br /> Toluene 25.2 27.0 0.707 25 98.0 105.2 7.1 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 483 516 500 96.6 103.2 73-130 <br /> Toluene-d8 534 550 500 106.8 110.0 81-114 <br /> 1 1— <br /> Severn Trent Laboratories, Inc. 01/24/2005 12:59 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> A W Of SaVern Trend Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com'CA DHS ELAP#2496 Page 26 of 27 <br />