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STLSubmission#: 2003-11-0599 <br /> CAM 17 Metals <br /> Geomatrix Consultants <br /> Attn.: Robert Cheung <br /> 2101 Webster Street, 12th Floor <br /> Oakland, CA 94612 <br /> Phone: (510)663-4299 Fax: (510)663-4141 <br /> Project: 7066.001 Received: 11/17/2003 17:15 <br /> Batch QC Report <br /> Prep(s): 3050B Test(s): 6010B <br /> Laboratory Control Spike Soil QC Batch#2003/11/25-02.15 <br /> LCS 2003/11/25-02.15-002 Extracted: 11/25/2003 Analyzed: 11/25/2003 20:41 <br /> LCSD 2003/11/25-02.15-003 Extracted: 11/25/2003 Analyzed: 11/25/2003 20:44 <br /> Compound Conic. mg/Kg Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Antimony 87.0 86.0 100.0 87.0 86.0 1.2 80-120 20 <br /> Arsenic 87.0 84.0 100.0 87.0 84.0 3.5 80-120 20 <br /> Barium 88.0 85.0 100.0 88.0 85.0 3.5 80-120 20 <br /> Beryllium 91.0 89.0 100.0 91.0 89.0 2.2 80-120 20 <br /> Cadmium 88.0 85.0 100.0 88.0 85.0 3.5 80-120 20 <br /> Chromium 90.0 88.0 100.0 90.0 88.0 2.2 80-120 20 <br /> Cobalt 92.0 89.0 100.0 92.0 89.0 3.3 80-120 20 <br /> Copper 98.0 95.0 100.0 98.0 95.0 3.1 80-120 20 <br /> Lead 86.0 83.0 100.0 86.0 83.0 3.6 80-120 20 <br /> Molybdenum 92.0 89.0 100.0 92.0 89.0 3.3 80-120 20 <br /> Nickel 89.0 86.0 100.0 89.0 86.0 3.4 80-120 20 <br /> Selenium 85.0 81.0 100.0 85.0 81.0 4.8 80-120 20 <br /> Silver 89.0 86.0 100.0 89.0 86.0 3.4 80-120 20 <br /> Thallium 90.0 88.0 100.0 90.0 88.0 2.2 80-120 20 <br /> Vanadium 89.0 88.0 100.0 89.0 88.0 1.1 80-120 20 <br /> Zinc 90.0 89.0 100.0 90.0 89.0 1.1 80-120 20 <br /> Severn Trent Laboratories, Inc. 12/03/2003 11:05 <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.stl-inc.com*CA DHS ELAP#2496 Page 9 of 12 <br />