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819 Stnker Avenue Suite 8 <br /> 4Sequoia Sacramento,CA 95934 <br /> (916)921 9600 <br /> D�r Analytical FAXequoi921OIoO <br /> www sequoialabs com <br /> SECOR Intemational-Rancho Cordova Protect Tosco 16470,Lathrop,CA <br /> 3017 Kilgore Road, Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 11/19/02 18 12 <br /> Total Metals by EPA 6000/7000 Series Methods - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Repotting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2110150-EPA 3050B <br /> Blank(2110150-BLK1) Prepared 11/12/02 Analyzed 11/17/02 <br /> Lead ND 10 mg/kg <br /> LCS(2710150-BS1) Prepared 11/12/02 Analyzed 11/17/02 <br /> Lead 481 10 mg/kg 500 96 80-120 <br /> Matrix Spike(2110150-MS1) Source 5211194-01 Prepared 11/12/02 Analyzed 11/17/02 <br /> Lead 104 10 mg/kg 500 53 102 80-120 <br /> Matrix Spike Dup(2110150-MSDI) Source S211194-01 Prepared 11/12/02 Analyzed 11/17/02 <br /> Lead 980 10 mg/kg 500 53 90 80-120 6 20 <br /> 0 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page Page 6 of 7 <br />