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Sequoia 19 Striker Av95E34 <br /> Sacramento,CA 95814 <br /> (916)921-9600 <br /> AnitNtIcal FAX(916)921-0100 <br /> jt n, www.sequoislabsxom <br /> Kleinfelder-Stockton Project:DSS-Tracy S512627 <br /> 2825 East Myrtle Street Project Numbar:29131.E01 Reported: <br /> Stockton CA,95205 Project Manager:l+rancis Bean 01/17/06 15:10 <br /> METALS- Quality Control <br /> Del Mar Analytical,Irvine <br /> l <br /> I <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %RF.0 Limits RPD Limit Notes <br /> Batch 5L30087-EPA 200.2 ICP 1 EPA 200.7 <br /> Blank(5L30087-BLKI) Prepared&Analyzed: 12/30/05 <br /> Silicon ND 0.11 mg/l as Silica <br /> Laboratory Control Sample(5L30087-BS1) Prepared&Analyzed: 12/30/05 <br /> Silicon 4.81 0.11 mg/l as Silica 5.35 90 85-115 <br /> Matrix Spike(5L30087-MSI) Source:IOL2580-01 Prepared&Analyzed: 12/30/05 <br /> Silicon 16.5 0.l 1 mall as Silica 5.35 12 84 70.130 <br /> Matrix Spike Dup(5L30087-MSDI) Source: IOL2580-01 Prepared&Analyzed: 12/30/05 <br /> Silicon 16.4 0.1 1 mg/l as Silica 5,35 12 82 70-130 0.6 20 <br /> I <br /> I <br /> Sequoia.Analytical-Sacramento The results in this report apply to the samples analysed in accordance with the chain of <br /> custody document. Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> Page 7 of 15 <br />