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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> 4L (916)921-9600 <br /> l is l www.sequoialabs.com <br /> FAX 9 0 <br /> ww.sequoialabs.coabs.com <br /> EMCON/IT-Sacramento Project: Harney Lane Landfill,San Joaquin County <br /> 1433 N.Market Blvd. Project Number: #791290 Reported: <br /> Sacramento CA,95834 Project Manager: Steve Giacomini 12/07/00 09:09 <br /> Total Metals by EPA 6000/7000 Series Methods - Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result MDL Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 0120034-General Preparation <br /> Blank(0120034-BLKI) Prepared: 12/01/00 Analyzed: 12/04/00 <br /> Hexavalent Chromium ND 0.00180 0.00500 mg/1 U <br /> LCS(0120034-BSI) Prepared: 12/01/00 Analyzed: 12/04/00 <br /> Hexavalent Chromium 0.0520 0.00180 0.00500 mg/1 0.0500 10.1 80-120 <br /> Matrix Spike(0120034-MS1) Source:S011432-01 Prepared: 12/01/00 Analyzed: 12/04/00 <br /> Hexavalent Chromium 0.0588 0.00180 0.00500 mg/l 0.0500 0.00567 106 75-125 <br /> Matrix Spike Dup(0120034-MSD Source:5011432-01 Prepared: 12/01/00 Analyzed: 12/04/00 <br /> Hexavalent Chromium 0.0588 0.00180 0.00500 mg/I 0.0500 0.00567 106 75-125 0 20 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 3 of 4 <br />