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S .1 L Submission: 2004-12-0565 <br /> (• Fuel Oxygenates by 8260B <br /> ATC Associates Inc. <br /> Attn.: John Love <br /> 6602 Owens Drive Suite 100 <br /> I <br /> Pleasanton, CA 94588 <br /> Phone: (925)460-5300 Fax: (925)463-2559 <br /> Project: 75.62503.3205 Received: 12/14/2004 15:50 <br /> Quik Stop#132 <br /> Site: 3555 West Hammer Lane, Stockton, CA <br /> Batch QC Report. ' <br /> ' Pre sP(.): 5030B <br /> Test(s):8260E <br /> Matrix Spike (MS 1-MSD,) Water QC Batch#-2004112118 2004/12118-&62' <br /> MIN-6 » M5 3Lab![3:._, . 2004=12=0565-006. <br /> MS: 2004/12/18-02.62-043 Extracted: 12/19/2004 Analyzed: 12/19120,04,01:41', <br /> 1 Dilution:. 1 00 <br /> MSD: 2004112/18-0.2:62-005 Extracted'. 12/19/2004 Analyzed 12/191200402:05. <br /> Dilution:. 1.00 '' <br /> Compound Conc. ug!L S k.Leve Recove % Limits% Flags <br /> MS MSD Sample u /L MS MSD RPD Rec. RPD MS MSD <br /> Methyl tert-butyl ether 29.3 29.2 ND 25.0 117.2 116.8 0.3 65-165 20 <br /> Benzene 26.9 29,4 ND 25.0 107.6 117.6 8.9 69-129 20 <br /> Toluene 27.4 28.7 ND 25.0 109.6 114.8 4.6 70-130 20 <br /> Surrogates) <br /> 1,2-Dichloraethane-d4 420 407 500 83.9 81.3 73-130 <br /> Toluene-d8 1421 428 500 84.2 185.5 81-114 <br /> I <br /> Severn Trent Laboratories, Inc. 12/28/2004 12:12 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A peh W 1.v Twl Plc Tel 925 484 1919 Fax 925 484 1096*www.stkinc.com*CA DHS ELAP#2496 Page 17 of 18 <br />