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1 <br /> STL <br /> Submission # 2004-01-0542 <br /> 16 Wx�� <br /> Gasoline <br /> Treadwell & Rollo-San Francisco <br /> Attn Brian Moore <br /> 555 Montgomery Street, Suite 1300 <br /> San Francisco, CA 94111-2554 <br /> Phone (415) 955-9040 Fax (415) 955-9041 <br /> Protect 2597 10 Received 01/20/2004 17 25 <br /> Stockton-Area 16 <br /> Batch QC Report <br /> Prep(s) 5030 Test(s) 8015M <br /> Laboratory Control Spike Water QC Batch#2004/01127-01 05 <br /> LCS 2004/01127-01 05-006 Extracted 01/27/2004 Analyzed 01/27/2004 08 38 <br /> LCSD 2004101/27-01 05-007 Extracted 01/27/2004 Analyzed 01/27/2004 09 10 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Gasoline 491 474 500 982 948 35 75-125 20 <br /> Surrogetes(s) <br /> 4-Bromofluorobenzene-FID 389 384 500 1778 768 50-150 <br /> i <br /> Severn Trent Laboratories, Inc 01/27/2004 16 36 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton CA 94566 <br /> A part of 6"m Trent Plc Tel 925 484 1919 Fax 925 484 1096`www stl-inc com'CA DHS FLAP*2496 Page 5 of 6 <br />