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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> 4D- (916)921-9600 <br /> Analytical www.sequoialabs.com(916)921-01 00 <br /> WO ww.sequoialabs.com <br /> EMCON/IT-Sacramento Project: Foothill Landfill,San Joaquin County <br /> 1433 N.Market Blvd. Project Number: 791289 Reported: <br /> Sacramento CA,95834 Project Manner: Steve Giacomini 05/17/01 12:12 <br /> Anions by EPA Method 300.0 - Quality Control <br /> Sequoia Analytical- Sacramento <br /> ' Reporting Spike Source %REC RPD <br /> Analyte Result MDL Limit Units Level Result °/Omc Limits RPD Limit Notes <br /> Batch 1050053-General Preparation <br /> Blank(1050053-BLKI) Prepared&Analyzed:05/02/01 <br /> Chloride ND 0.0250 0.200 mg/l <br /> ' Nitrate as N ND 0.00450 0.0226 <br /> Sulfate as SO4 ND 0.0210 0.200 " <br /> LCS(1050053-BSI) IPrepared&Analyzed:05/02/01 <br /> Chloride 4.62 0.0250 0.200 mg/I 5.00 92.4 80-120 <br /> Nitrate as N 1.10 0.00450 0.0226 1.13 97.3 80-120 <br /> Sulfate as SO4 9.71 0.0210 0.200 10.0 97.1 80-120 <br /> Matrix Spike(1050053-MSI) Source:5105018-02 Prepared&Analyzed:05/02/01 <br /> Chloride 4.72 0.0250 0.200 mg/l 5.00 0.175 90.9 75-125 <br /> Nitrate as N 1.06 0.00450 0.0226 1.13 ND 93.8 75-125 <br /> Sulfate as SO4 9.64 0.0210 0.200 10.0 ND 96.4 75-125 <br /> Matrix Spike Dup(1050053-MSD1) Source:S105018-02 Prepared&Analyzed:05/02/01 <br /> Chloride 4.78 0.0250 0.200 mg/l 5.00 0.175 92.1 75-125 1.26 20 <br /> Nitrate as N 1.11 0.00450 0.0226 1.13 ND 98.2 75-125 4.61 20 <br /> Sulfate as SO4 9.99 0.0210 0.200 10.0 ND 99.9 75-125 3.57 20 <br /> 1 <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 /> AM' Page 15 of 26 <br />