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STLSubmission #: 2003-06-0483 <br /> Metals <br /> Geomatrix Consultants <br /> Attn.: Martin Bloes <br /> 2101 Webster St.,12 th Floor <br /> Oakland, CA 94612 <br /> Phone: (510) 663-4148 Fax: (510) 663-4141 <br /> Project: 7243.011 Received: 06/16/2003 12:50 <br /> Batch QC Report <br /> Prep(s): 3010A Test(s): 60108 <br /> Matrix Spike ( MS/MSD ) Water QC Batch #2003/06/16-08.15 <br /> CYANIDE HOLDING TANK >> MS Lab ID: 2003-06-0408- 001 <br /> MS: 2003/06/16-08.15-023 Extracted: 06/16/2003 Analyzed: 06/24/2003 09:28 <br /> Dilution: 1.00 <br /> MSD: 2003/06/16-08.15-024 Extracted: 06/16/2003 Analyzed: 06/24/2003 09:32 <br /> Dilution: 1.00 <br /> Compound Conc. mg/L Spk.Level Recovery% Limits% Flags <br /> MS MSD Sample mg/L MS MSD RPD Rec. RPD MS MSD <br /> Calcium 6.23 6.06 0.620 5.00 112.2 108.8 3.1 75-125 20 <br /> Magnesium 5.25 5.03 ND 5.00 105.0 100.6 4.3 75-125 20 <br /> Iron 6.73 6.48 0.808 5.00 118.4 113.4 4.3 75-125 20 <br /> Manganese 0.551 0.528 0.0324 0.500 103.7 99.1 4.5 75-125 20 <br /> Sodium 443 430 223 20.0 1100.0 1035.0 6.1 75-125 20 msl msl <br /> Potassium 82.5 81.2 32.5 20.0 250.0 243.5 2.6 75-125 20 mso mso <br /> Severn Trent Laboratories, Inc. 06/24/200314:31 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn Trent Pic Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com`CA DHS ELAP#2496 Page 6 of 7 <br />