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• 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> ` <br /> Sequoia 404 H Wiget Lane Walnut Creek CA 94598 (925)988 9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070 41 1 1 (650)232-9600 FAX(650)232-9612 <br /> SBCOR Intemational Project Arco 4932,Stockton,CA Sampled 612199 <br /> 9912 Business Park Drive,Ste 100 Project Number NIA Received 613/99 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 6/8199 <br /> Total Metals by EPA 6000/7000 Series Methods/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes" <br /> Batch. 9060083 l2ate Prepared. 6/7199 EXtraglion Method. EPA 305013 <br /> Blank 946170SLULK l <br /> Lead 6/8/99 ND mg/kg 250 <br /> lLCIS 906Q.0_83-RSI <br /> Lead 618199 500 45 9 mg/kg 800-120 918 <br /> x <br /> Matrix Spike 90600,83-MSI 5906052-06 <br /> Lead 6/8199 500 ND 51 5 mg/kg 800-120 103 D <br /> Matrix Spike Duo 9060083-MSD1 5906052-06 <br /> Lead 6/8/99 500 ND 490 mg/kg 80 0-120 980 200 4 98 D <br /> i <br /> Sequoia Aualytical -Sacramerto �w <br /> R derr 1u end of report for text cf nates and definitions <br /> Z2 L�--- <br /> Sandra R Hanson,Client Services Representative Page 5 of 6 <br />