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STLSubmission #: 2003-06-0779 <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: 06/25/2003 15:31 <br /> Batch QC Report <br /> Prep(s): 3010A Test(s): 60108 <br /> Matrix Spike ( MS/MSD ) Water QC Batch #2003/06/26-09.15 <br /> MW-1 >> MS Lab ID: 2003-06-0685-002 <br /> MS: 2003/06/26-09.15-104 Extracted: 06/26/2003 Analyzed: 06/30/200312:52 <br /> Dilution: 1.00 <br /> MSD: 2003/06/26-09.15-107 Extracted: 06/26/2003 Analyzed: 06/30/200313:14 <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 56.2 54.8 49.4 5.00 136.0 108.0 23.0 75-125 20 msl <br /> Magnesium 36.0 35.1 30.0 5.00 120.0 102.0 16.2 75-125 20 <br /> Iron 16.3 16.0 10.9 5.00 108.0 102.0 5.7 75-125 20 <br /> Manganese 0.668 0.663 0.167 0.500 100.2 99.2 1.0 75-125 20 <br /> Sodium 43.2 42.9 21.5 20.0 108.5 107.0 1.4 75-125 20 <br /> Potassium 22.3 22.3 1.95 20.0 101.8 101.8 0.0 75-125 20 <br /> Severn Trent Laboratories, Inc. 07/02/200311:46 <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 />