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Sequoia Walnut <br /> N. CA Lane <br /> t Creek,,CA 94598 <br /> (925)988-9600 <br /> Analytical FAX(925)98 <br /> www.sequoialabs.combs.com <br /> Gettler Ryan,Inc.-Dublin Project: Tosco <br /> 6747 Sierra Court Suite l Project Number: Tosco# 11195 Reported: <br /> Dublin CA,94568 Project Manager: Doug Lee 12-Mar-02 07:34 <br /> Total Metals by EPA 6000/7000 Series Methods - 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 2CO4017-EPA 3050B <br /> Blank(2C04017-BLKI) Prepared:04-Mar-02 Analyzed:06-Mar-02 <br /> Lead 2.00 2.0 mglkg <br /> LCS(2C04017-BSI) Prepared:04-Mar-02 Analyzed:06-Mar-02 <br /> Lead 60.0 2.0 mg/kg 50.0 120 80-120 <br /> LCS Dup(2C04017-BSD1) Prepared:04-Mar-02 Analyzed:06-Mar-02 <br /> Lead 55.0 2.0 mg/kg 50.0 110 80-120 9 20 <br /> Sequoia Analytical - Walnut Creek The results in this report apply to the samples analyzed in accordance with the chn;f?of <br /> custody document, This analytical report must be reproduced in its <br /> 5 of 6 <br />