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STLSubmission #: 2003-06-0013 <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: 06/02/2003 08:42 <br /> Batch QC Report <br /> Prep(s): 3010A Test(s): 60108 <br /> Matrix Spike ( MS/MSD ) Water QC Batch #2003/06/03-02.15 <br /> S4-0-060103 >> MS Lab ID: 2003-06-0013 -001 <br /> MS: 2003/06/03-02.15-101 Extracted: 06/03/2003 Analyzed: 06/04/2003 21:20 <br /> Dilution: 1.00 <br /> MSD: 2003/06/03-02.15-102 Extracted: 06/03/2003 Analyzed: 06/04/2003 21:26 <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 /> Copper 0.496 0.506 ND 0.500 99.2 101.2 2.0 75-125 20 <br /> Zinc 0.496 0.508 ND 0.500 99.2 101.6 2.4 75-125 20 <br /> Calcium 249 257 241 5.00 160.0 320.0 66.7 75-125 20 mso mso,rpd <br /> Magnesium 104 108 98.0 5.00 120.0 200.0 50.0 75-125 20 mso,rpd <br /> Iron 6.71 7.13 0.510 5.00 124.0 132.4 6.6 75-125 20 mso <br /> Sodium 458 470 432 20.0 130.0 190.0 37.5 75-125 20 mso mso,rpd <br /> Potassium 25.8 26.7 4.50 20.0 106.5 111.0 4.1 75-125 20 <br /> Severn Trent Laboratories, Inc. 06/10/2003 07:37 <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 />