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Sequoia 1455 McDowell Blvd. North, Ste. D <br /> Petaluma,CA 94954 <br /> (707) 792-1865 <br /> W„r Analytical FAX(707)792-0342 <br /> Cambria Environmental Project: Shell Oil Co. Sampled: 9/29/99 <br /> 270 Perkins St. Project Number: 440 Charter,Stockton Received: 9/29/99 <br /> Sonoma,CA 95476 Project Manager: Tom Magney Reported: 10/11/99 <br /> Total Metals by EPA 6000/7000 Series Methods/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> -\nalvte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Batch: 9090768 Date Prepared: 9/30/99 Extraction Method: EPA 3050B <br /> Blank 9090768-BL K I <br /> Lead 9/30/99 ND mg%k 7.50 <br /> LCS 9090768-BSI <br /> Lead 9/30/99 50.0 43.7 mg/kg 80.0-120 87.4 <br /> Matrix Spike 9090768-MSI P909675-01 <br /> Lead 9/30/99 47.2 14.0 88.8 mg/kg 75.0-125 158 3 <br /> Matrix Spike Dup 9090768-MSDI P909675-01 <br /> Lead 9/30/99 48.1 14.0 50.5 m�--%kg 75.0-125 75.9 20.0 70.2 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and dcfinrtials. <br /> Pae 1)of, I I <br />