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STLSubmission 2004-10-0395 <br /> Gas/BTEX Compounds by 8015MI8021 <br />' Philip Services- Illinois <br /> Attn Mark Mllward <br />' 210 W Sand Bank Road <br /> Colombia, IL 62236 <br /> Phone (618)281-1547 Fax (618) 281-5120 <br /> Project C23484517B00 Received 10/12/2004 18 45 <br /> Sara Lee-Airport Way <br /> Batch QC Report <br /> iPrep(s) 5030 Test(s) 8021 B <br /> Laboratory Control Spike Water QC Batch#2004110119-01 05 <br /> LCS 2004110119-01 05-004 Extracted 10/1 912 004 Analyzed 10/19/20040807, <br /> LCSD 2004110119-01 05-005 Extracted 10/19/2004 Analyzed 10/19/20040840 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 469 473 500 938 94 6 0 8 77-123 20 <br /> Toluene 472 472 500 94 4 94 4 0 0 78-122 20 <br /> Ethyl benzene 45 7 45 4 500 91 4 908 0 7 70-130 20 <br /> Xylene(s) 137 139 150 91 3 927 1 5 75-125 20 <br />' <br /> Surrogates(s) <br /> Tnfluorotoluene 543 537 500 108 6 107 4 58-124 <br /> 1 <br /> I <br /> Severn Trent Laboratories Inc 10/21/2004 12 55 <br /> r STL San Francisco` 1220 Quarry Lane Pleasanton,CA 94566 <br /> A pa4&Se-a Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc corn'CA DHS ELAP#2496 Page 22 of 26 <br />