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Submission 2005-04-0633 <br /> Metals <br /> Treadwell & Rollo-San Francisco <br /> Attn David Dixon <br /> i555 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) 3010A Test(s) 60106 <br /> Laboratory Control Spike Water QC Batch #2005104127-01 15 <br /> LCS 2005104127-01 15-051 Extracted 04/27/2005 Analyzed 04/27/2005 12 37 <br /> LCSD 2005104127-01 15-052 Extracted 04/2712005 Analyzed 04/27/2005 12 40 <br /> Compound Conc mg/L. Exp Conc. Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Cadmium 0 500 0 491 0 500 1000 982 1 8 80-120 20 <br /> Chromium 0 509 0 499 0 500 1018 998 20 80-120 20 <br /> Copper 0 512 0 503 0 500 1024 1006 1 8 80-120 20 <br /> Lead 0 503 0 495 0 500 1006 990 1 6 80-120 20 <br /> Nickel 0 508 0 499 0 500 101 6 998 1 8 80-120 20 <br /> Zinc 0 500 0 491 0 500 1000 1982 1 8 80-120 20 <br /> Severn Trent Laboratories, Inc 04/28/2005 13 25 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Bevem Treat Plc Tel 125 4114 1119 Fax 925 484 1096`www stknc con,`CA DHS ELAP4 2416 Page 4 of 4 <br />