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INS r-11111-11 <br /> lli11u �i SIL <br /> Submission: 2004-07-0631 <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: 07/20/2004 17:03 <br /> Conoco Phillips#01205 <br /> Site: 16470 Cambridge St. Lathrop <br /> Batch QC Report <br /> Prep(s): 50306 Test(s): 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004/07/30-2A.64 <br /> LCS 2004107!30-2A.64-002 Extracted: 07/3012004 Analyzed: 07/3012004 20:02 <br /> LCSD 2004107130-2A.64-024 Extracted: 07/30/2004 Analyzed: 07/30/2004 20:24 <br /> Compound Conc. ug/L F-xp.Conc. Recovery% RPD Ctrl.Limits % Rags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 28.8 29.6 25 115.2 118.4 2.7 65-165 20 <br /> Benzene 25.7 26.6 25 102.8 106.4 3.4 69-129 20 <br /> Toluene 28.1 29.1 25 112.4 116.4 3.5 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichioroethane-d4 516 500 500 103.2 100.0 72-128 <br /> Toluene-d8 542 528 1500 108.4 105.6 80-113 <br /> Severn Trent Laboratories, Inc. 08/02/2004 16:00 <br /> STL San Francisco'1220 Quarry Lane, Pleasanton,CA 94566 <br /> a-n arS.—,7,-1 P<< Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com'CA DHS EIRP#2496 Page 20 of 23 <br />