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• 819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 ' <br /> (916)921-9600 <br /> war Analytical FAX(916)921-0100 <br /> www.sequoialabs.com t <br /> URS-Sac,Gateway Oaks Project: ARCO 760,Lodi,CA <br /> 2870 Gateway Oaks Dr.,Ste.300 Project Number: 760,Lodi,CA Reported: <br /> 'Sacramento CA,95833 Project Manager: Vernon Elarth 08/30/02 13:59 <br /> Total Metals by EPA 6000/7000 Series Methods-Quality Control <br /> Sequoia Analytical-Sacramento ' <br /> Anal a Reporting Spike Source %REC RPD <br /> Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2080247-EPA 3050B ' <br /> Blank(2080247-BLKI) Prepared&Analyzed:08/26/02 <br /> Lead ND 2.5 mg/kg ' <br /> LCS(2080247-BSI) Prepared&Analyzed:08/26/02 <br /> Lead 50.4 2.5 mg/kg 50.0 101 80-120 <br /> Matrix Spike(2080247-MSI) Source:S208204-09 Prepared&Analyzed:08/26/02 <br /> Lead 50.7 25 mg/kg 50.0 ND 101 80-120 <br /> Matrix Spike Dup(2080247-MSD1) Source:S208204-09 Prepared&Analyzed:08/26/02 ' <br /> Lead 50.3 25 mg/kg 50.0 ND 101 80420 0.8 20 <br /> r <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 Page 10 of 11 ' <br />