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404 N Wipt Lane <br /> a— ) Sequoia Walnut Oredc,CA 94598 <br /> (925)988-9600 <br /> " ' Analytical FAX(925)988-9673 <br /> www sequoialabs can <br /> t47ttler Ryan,Inc -Dublin Protect Tosco W208192 <br /> Sierra Court Suite J Project Number Tosco# 11192 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 18-Oct-02 12 52 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical- Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 21412008-EPA 5030B(P/T) <br /> Matrix Spike Dup(2H12008-MSD1) Source W208192-05 Prepared&Analyzed 12-Aug-02 <br /> Surrogate 4-Bromo luorobenzene 500 ug/1 500 100 50-150 <br /> J&ia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight bases <br /> This analytical report must be reproduced in its entirety <br /> 14 of 17 <br />