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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#2003/11/18-04.15 <br /> LCS 2003/11/18-04.15-071 Extracted: 11/18/2003 Analyzed: 11/19/200313:13 <br /> LCSD 2003/11/18-04.15-072 Extracted: 11/18/2003 Analyzed: 11/19/200313:18 <br /> Compound Conic. mg/Kg Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Antimony 93.3 94.1 100.0 93.3 94.1 0.9 80-120 20 <br /> Arsenic 95.1 94.6 100.0 95.1 94.6 0.5 80-120 20 <br /> Barium 96.2 96.1 100.0 96.2 96.1 0.1 80-120 20 <br /> Beryllium 97.7 100 100.0 97.7 100.0 2.3 80-120 20 <br /> Cadmium 95.0 94.4 100.0 95.0 94.4 0.6 80-120 20 <br /> Chromium 95.5 95.6 100.0 95.5 95.6 0.1 80-120 20 <br /> Cobalt 97.2 97.3 100.0 97.2 97.3 0.1 80-120 20 <br /> Copper 100 100 100.0 100.0 100.0 0.0 80-120 20 <br /> Lead 98.6 98.6 100.0 98.6 98.6 0.0 80-120 20 <br /> Molybdenum 96.1 96.4 100.0 96.1 96.4 0.3 80-120 20 <br /> Nickel 95.3 94.0 100.0 95.3 94.0 1.4 80-120 20 <br /> Selenium 91.0 90.0 100.0 91.0 90.0 1.1 80-120 20 <br /> Silver 98.9 99.0 100.0 98.9 99.0 0.1 80-120 20 <br /> Thallium 94.5 93.8 100.0 94.5 93.8 0.7 80-120 20 <br /> Vanadium 100 100 100.0 100.0 100.0 0.0 80-120 20 <br /> Zinc 92.0 92.2 100.0 92.0 92.2 0.2 80-120 20 <br /> Severn Trent Laboratories, Inc. 11/25/2003 13:54 <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 30 of 36 <br />