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4680 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(916)921-0100 <br /> %- -0 Analytical 1455 McDowell Blvd,North,Ste.b Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> IT/PEG Corporation Project: TOSCO#4409,Stockton,CA Sampled: 418199 <br /> 11315 Sunrise Gold Circle Ste.M Project Number: 911-011.1A Received: 419199 <br /> Rancho Cordova,CA 95742 Project Manager: Mike Mitchener Reported: 4113199 <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: 904010 Date Prepared: 4112199 Fxtraction Method: EPA 3050B <br /> Blank 9040101-BLK11 <br /> Lead 4/12199 ND mg/kg 2.50 <br /> ISS 9040101-BSI <br /> Lead 4112199 50.0 47.4 mg/kg 80.0-120 94.8 <br /> atrix Spike 9040101-MS1 5904128-01 <br /> Lead 4112199 50.0 ND 54.7 mg/kg 80.0-120 109 D <br /> Matrix Spike Dup 9040101-MSD1 5904128-O 1 <br /> Lead 4/12/99 50.0 ND 54.4 mg/kg 80.0-120 109 20.0 0 D <br /> --sequoia Analytical-Sacramento *Refer to end of report far text of notes and definitions. <br /> `-�� 1���� — Page 7 of 8 <br /> Sandra R.Hanson,Client Services Representative g <br />