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Sequoia 580 Chesapeake Drive Redwood City, CA 9406' (650) 364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 9459b (510) 988.9600 FAX(510)988.9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> Kleinfelder-Stockton Project: N/A Sampled: 6/5/98 <br /> 2825 East Myrtle Street Project Number: 20-3712-08 Received: 6/9/98 <br /> Stockton,CA 95205 Project Manager: Tony Martin Reported: 6/23/98 <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 /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Batch: 8060145 Date Prepared: 6/12/98 Extraction Method: EPA 3050B <br /> Blah 8060145-BLKI <br /> Lead 6/15/98 ND mg/kg 2.50 <br /> "-U 8060145-BSI <br /> Lead 6/15/98 50.0 47.8 mg/kg 80.0-120 95.6 <br /> Matrix Spike 8060145-MSI 5806102-07 <br /> mead 6/15/98 50.0 ND 44.8 mg/kg 80.0-120 89.6 <br /> Matrix SpikeDuo 8060145-MSD1 S806102-07 <br /> Lead 6/15/98 50.0 ND 43.6 mg/kg 80.0-120 87.2 20.0 2.71 <br /> 4aC. <br /> lytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> neide ,Laboratory Director Page 12 of 13 <br />