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Sequoia 680 C, eake Drive Redwood City.CA 94063 650)364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-%00 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Kleinfelder-Stockton Project: N/A Sampled: 7/16198 <br /> 2825 East Myrtle Street Project Number: 20-4202-O1.P02 Received: 7/20/98 <br /> Stockton,CA 95205 Project Manager: Tony Martin Reported: 8,11/98 <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 /> �nalvte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Matrix Spike(continued) 8070326-N. ISI 5807216-07 <br /> Chromium 7/25/98 50.0 23.1 62.9 merkg 80.0-120 79.6 3,D <br /> Nickel 1. 50.0 32.6 73.4 80.0-120 81.6 D <br /> Zinc " 50.0 39.9 81.2 80.0-120 82.6 D <br /> Matrix Spike Dun 8070326-NISDI 5807216-07 <br /> Arsenic 7/25/98 50.0 ND 46.2 me/k2 80.0-120 92.4 20.0 2.85 D <br /> Cadmium " 50.0 ND 43.0 80.0-120 86.0 20.0 3.31 D <br /> Chromium 50.0 23.1 67.0 " 80.0-120 87.8 20.0 9.80 D <br /> Nickel 50.0 32.6 77.6 " 80.0-120 90.0 20.0 9.79 D <br /> Zinc 50.0 39.9 85.6 " 80.0-120 91.4 20.0 10.1 D <br /> Se;,uola.4palytical-Sacramento *Refer to end of report for tart of notes and definitions. <br /> i <br /> P da C. Schneider,Laboratory Director Page 20 of 25 <br />