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STL <br /> Submission: 2004-10-0076 <br /> Fuel Oxygenates by 8260B <br /> ATC Associates Inc. <br /> Attn.: Victoria Ellsworth <br /> 6602 Owens Drive Suite 100 <br /> Pleasanton, CA 94588 <br /> Phone: (925)460-5300 Fax: (925) 463-2559 <br /> Project: 75.62503.3205 Received: 10/01/2004 12:15 <br /> L" Quik Stop#132 <br /> Site: 3555 West Hammer Lane, Stockton, CA <br /> +v. <br /> Batch QC Report <br /> Prep(s): 50308 Test(s): 8260E <br /> Laboratory Control Spike Water QC Batch#2004/10/13-01.62 <br /> LCS 2004110113-01.62-056 Extracted: 10/13/2004 Analyzed: 10/13/200418:56 <br /> LCSD 2004110113-01.62-017 Extracted: 10113/2004 Analyzed: 10113/200419:17 <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) 21.0 21.5 25.0 84.0 86.0 2.4 65-165 20 <br /> Benzene 23.9 28.4 25.0 95.6 113.6 17.2 69-129 20 <br /> Toluene 26.2 27.4 25.0 104.8 109.6 4.5 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 484 472 500 96.8 94.4 72-128 <br /> +r Toluene-d8 590 1636 1500 1118.0 1127.2 60-113 S5 S5 <br /> rl..+ <br /> V Severn Trent Laboratories, Inc. 101211200415:46 <br /> ... STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of S—Trenl Pk Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com a CA DHS ELAP#2496 Page 17 of 23 <br /> 1..r <br />