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ST� Submission:2005-04-0633 <br /> II <br /> 1 <br /> Oil & Grease (Petroleum) by EPA 1664A <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: 04/20/2005 14:00 <br /> Carando <br /> Batch QC Report <br /> Prep(s): 1664A Test(s): 1664A . <br /> Laboratory.Control Spike Water _ QC Batch#2005/04/21-02.23 <br /> k <br /> LCS 2005/04/21-02.23-002 Extracted: 04/21/2005 Analyzed:04/21/2005'20:00 <br /> LCSD 2005/04/21-02.23-003 Extracted. 04/21/2005 Analyzed; 04/21/2005 20:00 <br /> Compound Conc. mg/L . Exp:Conc. , Recovery% RPD C,rl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rea RPD LCS LCSD . <br /> Oil and Grease(Petroleum) 19.7 19.9 20.0 198.5 99:5 1.0 66-114 -24 <br /> Severn Trent Laboratories, Inc. 04/25/2005 14:20 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> .A part of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096'www.sti-inc.com'CA DHS ELAP#2496_ Page 4 of 4 <br />