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STLSubmission# 2004-01-0474 <br /> Gas/BTEX by 8015M/8021 <br /> Treadwell & Rollo-San Francisco <br /> Attn David Dixon <br /> 555 Montgomery Street Suite 1300 ' <br /> San Francisco, CA 94111-2554 <br /> Phone (415)955-9040 Fax (415)955-9041 <br /> Project 2597 10 Received 01/16/2004 16 50 , <br /> Stockton -Carando Site <br /> Batch QC Report , <br /> Prep(s) 5035 Test(s) 8021B <br /> Laboratory Control Spike Soil QC Batch#2004/01120-01 01 <br /> LCS 2004101/20-0101-012 Extracted 01/20/2004 Analyzed 011201200411 19 <br /> LCSD 2004101/20-01 01-013 Extracted 01/20/2004 Analyzed 01120/200411 45 1 <br /> Compound Conc mg/Kg Exp Conc I Recovery% IRPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec IRPD LCS LCSD <br /> Benzene 00907 0 101 01000 907 1010 107 77-123 35 <br /> Toluene 00930 0 104 01000 930 1040 112 78-122 35 <br /> Ethyl benzene 00876 00972 01000 876 972 104 70-130 35 <br /> Xylene(s) 0 262 0 295 0 300 873 98 3 11 9 75-125 35 <br /> Surrogates(s) <br /> Trifluorotoluene 1385 1496 1500 770 99 2 53-125 <br /> i <br /> 1 <br /> 1 � <br /> Severn Trent laboratories, Inc 01129/2004 12 34 <br /> STL San Francisco•1220 Quarry Lane Pleasanton CA 94566 ' <br /> A pert of Severn Tart Pk Tel 925 484 1919 Fax 925 484 1096`www stl-inc com'CA DHS FLAP#2496 Page 19 of 28 <br />