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STLSubmission #: 2003-06-0255 <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: 06/09/2003 13:45 <br /> 7243.011 <br /> Batch QC Report <br /> Prep(s): 3010A Test(s): 6010B <br /> Matrix Spike ( MS/MSD ) Water QC Batch #2003/06/09-07.15 <br /> EFFLUENT >> MS Lab ID: 2003-06-0178 -001 <br /> MS: 2003/06/09-07.15-047 Extracted: 06/09/2003 Analyzed: 06/13/200311:55 <br /> Dilution: 1.00 <br /> MSD: 2003/06/09-07.15-048 Extracted: 06/09/2003 Analyzed: 06/13/200311:58 <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 63.5 64.4 59.1 5.00 88.0 106.0 18.6 75-125 20 <br /> Magnesium 29.5 30.1 25.0 5.00 90.0 102.0 12.5 75-125 20 <br /> Iron 4.87 4.81 ND 5.00 97.4 96.2 1.2 75-125 20 <br /> Manganese 0.493 0.492 ND 0.500 98.6 98.4 0.2 75-125 20 <br /> Sodium 58.0 59.9 39.5 20.0 92.5 102.0 9.8 75-125 20 <br /> Potassium 22.5 22.9 2.13 20.0 101.8 103.8 1.9 75-125 20 <br /> Severn Trent Laboratories, Inc. 06/24/200310:03 <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 6 <br />