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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 /> Matrix Spike(MS/MSD) Soil QC Batch#2003/11/18-04.15 <br /> GMX-6-1.0 » MS Lab ID: 2003-11-0599-028 <br /> MS: 2003/11/18-04.15-074 Extracted: 11/18/2003 Analyzed: 11/19/2003 13:25 <br /> Dilution: 1.00 <br /> MSD: 2003/11/18-04.15-075 Extracted: 11/18/2003 Analyzed: 11/19/2003 13:29 <br /> Dilution: 1.00 <br /> Compound Conic. mg/Kg Spk.Level Recovery% Limits% Flags <br /> MS MSD Sample mg/Kg MS MSD RPD Rec. RPD MS MSD <br /> Antimony 22.2 21.2 ND 97.1 22.9 22.3 2.7 75-125 20 mso mso <br /> Arsenic 87.1 83.0 3.71 97.1 85.9 83.3 3.1 75-125 20 <br /> Barium 200 187 119 97.1 83.4 71.4 15.5 75-125 20 mso <br /> Beryllium 91.3 87.7 ND 97.1 94.0 92.1 2.0 75-125 20 <br /> Cadmium 81.9 78.1 ND 97.1 84.3 82.0 2.8 75-125 20 <br /> Chromium 107 103 22.5 97.1 87.0 84.6 2.8 75-125 20 <br /> Cobalt 94.4 88.4 9.13 97.1 87.8 83.3 5.3 75-125 20 <br /> Copper 116 111 22.2 97.1 96.6 93.3 3.5 75-125 20 <br /> Lead 90.6 87.7 6.77 97.1 86.3 85.0 1.5 75-125 20 <br /> Molybdenum 71.7 68.2 ND 97.1 73.8 71.6 3.0 75-125 20 mso mso <br /> Nickel 114 107 31.6 97.1 84.9 79.2 6.9 75-125 20 <br /> Selenium 79.4 75.1 ND 97.1 81.8 78.9 3.6 75-125 20 <br /> Silver 87.0 83.1 ND 97.1 89.6 87.3 2.6 75-125 20 <br /> Thallium 79.4 75.4 ND 97.1 81.8 79.2 3.2 75-125 20 <br /> Vanadium 114 108 24.7 97.1 92.0 87.5 5.0 75-125 20 <br /> Zinc 116 112 38.3 97.1 80.0 77.4 3.3 75-125 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 34 of 36 <br />