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S T L Submission 2005-04-0633 <br /> mom <br /> Fuel Oxygenates by 8260B . <br /> Treadwell & Rollo-San Francisco r <br /> Attn David Dixon <br /> 555 Montgomery Street Suite 1300 <br /> San Francisco, CA 94111-2554 <br /> Rhone (415) 955-9040 Fax (415) 955-9041 <br /> Protect 2597 10 Received 04/20/2005 14 00 t <br /> Carando <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260B , <br /> Laboratory Control Spike Soil QC Batch#2005104/24-0162 <br /> LCS 2005104124-01 62-018 Extracted 04/24/2005 Analyzed 04/24/2005 08 18 <br /> LCSD <br /> Compound Conc ug/Kg Exp Conc. Recovery% IRPD Ctrl Limits% Flags ' <br /> LCS LCSD LCS J LCSD % Rep RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 56 1 500 1122 65-165 20 <br /> Benzene 532 50 0 1064 69-129 20 <br /> Toluene 543 50 0 1086 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 498 500 996 72-124 <br /> Toluene-d8 1511 500 1022 75-116 <br /> 1 <br /> Severn Trent Laboratories, Inc 0510412011,316 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pail of Somm Trent Pk Tel 925 484 1919 Fax 925 484 1096*www stl-mc com*CA DHS FLAP#2496 Page 11 of 15 <br />