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k <br /> 404N Wiget Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> i:D (925)988-9600 <br /> iW Analytical FAX(925)988 9673 <br /> • Hw"w <br /> sequoialabsccm <br /> Secor-Rancho Cordova Project Arco <br /> 3017 Kilgore Rd,Ste #100 Project Number Arco#2133,Stockton Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 14-Aug-02 13 16 <br /> Total Metals by EPA 6000/7000 Series Methods <br /> Sequoia Analytical -Walnnt Creek <br /> Reporting <br /> Analyte Result limit Units Dilution Batch Prepared Analyzed Method Notes <br /> WT-1 208041-01 Soil Sam led 02-Aug-02 00 00 Received 02-Aug-02 14 50 <br /> Hexavalent Chromium 14 1 0 mg/kg l 2HO6009 05-Aug-02 06-Aug-02 EPA 7196A <br /> Cadmium ND 050 2HO2008 02-Aug-02 06-Aug-02 EPA 6010A <br /> Chromium 35 050 <br /> Lead 12 10 " <br /> Nickel 38 10 <br /> Zinc 49 10 " <br /> SP-1 A B 208041-02 Soil Sampled 02-Aug-02 11 30 Received 02-Aug-02 14 50 <br /> Hexavalent Chromium ND 10 mg/kg 1 2HO6009 05-Aug-02 06-Aug 02 EPA 7196A <br /> Cadmium ND 050 2HO2009 02-Aug-02 06-Aug-02 EPA 6010A <br /> Chromium 65 050 " <br /> Lead 52 10 <br /> Nickel 91 10 <br /> Zinc 19 10 <br /> i <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> f <br /> Page 4 of 20 <br />