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• I Chesapeake Drive Redwood City CA 94063 (650).364-9600 FAX(650)364 9233 ! <br /> Sequoia 404 N 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(9 16)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792 1865 FAX(707)792-0342 <br /> q4W1551 Industrial Road San Carlos CA 94070-4111 (6501232-9600 FAX(650)232-9612 <br /> Pinnacle-C P Project ARCO 6020,Manteca,CA Sampled 5/20/99 <br /> 3939 Cambridge Road,Ste 220 Project Number N/A Received 5/20/99 <br /> Cameron Park,CA 95682 Project Manager Joel Coffman Reported 6/2/99 <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. 9050245 Date Prepared, 5/21/99 ExtractionMcthgd. EPA 3050 <br /> $mpg 9050245-BL K 1 <br /> Lead 5/24/99 ND mg/kg 250 <br /> F,C'S 9050245-BSI ' <br /> Lead 5/24/99 500 49 1 mg/kg 800-120 982 <br /> MatrixSnike 9050245-MS1 $905262-07 <br /> Lead 5/24/99 500 530 695 mg/kg 800-120 NR 1,D <br /> Matrix Spike Dup 9+550245-MSD1 S905262-07 - <br /> Lead 5/24/99 500 530 557 mg/kg 800-120 540 200 144 1,2,D <br /> D <br /> 1 <br /> 1 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> L---:-- �, 6:� <br /> Ronald W Bobel,Client Services Re resentative Page 6 of 8 <br />