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STLSubmission #: 2003-06-0601 <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: 06/19/2003 11:25 <br /> Batch QC Report <br /> Prep(s): 3010A Test(s): 60108 <br /> Matrix Spike ( MS/MSD ) Water QC Batch #2003/06/19-04.15 <br /> Manhole Waste Water >> MS Lab ID: 2003-06-0540 - 004 <br /> MS: 2003/06/19-04.15-133 Extracted: 06/19/2003 Analyzed: 06/25/200317:52 <br /> Dilution: 1.00 <br /> MSD: 2003/06/19-04.15-134 Extracted: 06/19/2003 Analyzed: 06/25/200317:56 <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 10.6 10.8 5.72 5.00 97.6 101.6 4.0 75-125 20 <br /> Magnesium 5.74 5.96 0.699 5.00 100.8 105.2 4.3 75-125 20 <br /> Iron 7.69 7.95 2.55 5.00 102.8 108.0 4.9 75-125 20 <br /> Manganese 0.553 0.574 0.0427 0.500 102.1 106.3 4.0 75-125 20 <br /> Sodium 50.7 52.0 31.7 20.0 95.0 101.5 6.6 75-125 20 <br /> Potassium 320 325 304 20.0 80.0 105.0 27.0 75-125 20 msl <br /> Severn Trent Laboratories, Inc. 06/26/200314:11 <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 />