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�© STL Submission 2005-04-0633 <br /> i Oil & Grease (Petroleum) by EPA 1664A <br /> ' Treadwell & Rollo-San Francisco <br /> Attn David Dixon <br /> 1 555 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 #2005104121-02 23 <br /> LCS 2005104/21-02 23-002 Extracted 04/21/2005 Analyzed 04/21/2005 20 00 <br /> LCSD 2005/04121-02 23-003 Extracted 04/21/2005 Analyzed 04/21/2005 20 00 <br /> Compound Conc mg/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % I Rec TRPD LCS LCSD <br /> Oil and Grease(Petroleum) 197 199 200 985 995 1 0 166-1141 24 <br /> N <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> Severn Trent Laboratories, Inc 04/25/2005 14 20 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A pari of sev m rmnt Pic Tel 925 484 1919 Fax 925 484 1096"www stl-inc com'CA DHS ELAP#2496 Page 4 of 4 <br />