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STLSubmission #: 2003-06-0372 <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: 06/11/2003 15:50 <br /> 7243.011 <br /> Batch QC Report <br /> Prep(s): 3010A Test(s): 6010B <br /> Matrix Spike ( MS/MSD ) Water QC Batch #2003/06/13-02.15 <br /> S1-1-061103 >> MS Lab ID: 2003-06-0372 -001 <br /> MS: 2003/06/13-02.15-007 Extracted: 06/13/2003 Analyzed: 06/23/200315:08 <br /> Dilution: 1.00 <br /> MSD: 2003/06/13-02.15-008 Extracted: 06/13/2003 Analyzed: 06/23/200315:11 <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 125 127 122 5.00 60.0 100.0 50.0 75-125 20 msl msl <br /> Magnesium 62.2 63.3 58.2 5.00 80.0 102.0 24.2 75-125 20 msl <br /> Iron 5.09 5.12 ND 5.00 101.8 102.4 0.6 75-125 20 <br /> Manganese 0.517 0.517 0.0137 0.500 100.7 100.7 0.0 75-125 20 <br /> Sodium 270 274 253 20.0 85.0 105.0 21.1 75-125 20 msl <br /> Potassium 22.3 22.5 1.72 20.0 102.9 103.9 1.0 75-125 20 <br /> Severn Trent Laboratories, Inc. 06/24/200312:44 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A Part of Severn Trent Pc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com`CA DHS ELAP#2496 Page 6 of 7 <br />