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1 y 819 Striker Avenue,Suite 8' <br /> Sequoia®i a Sacramento,CA 95834 <br /> ID (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> WO ww , <br /> w.sequoialabs.coabs.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 Manager: Steve Giacomini 01/29/01 18:00 <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 %REC Limits RPD Limit Notes <br /> Batch 1010137-General Preparation ' <br /> Blank(1010137-BLK1) Prepared&Analyzed:01/12/01 <br /> Chloride ND 0.0250 0.200 mg/l U ' <br /> Nitrate as N ND 0.00450 0.0226 U <br /> Sulfate as SO4 ND 0.0210 0.200 U <br /> LCS(1010137-BS1) Prepared&Analyzed:01/12/01 ' <br /> Chloride 4.86 0.0250 0.200 mg/1 5.00 97.2 80-120 <br /> Nitrate as N 1.32 0.00450 0.0226 1.13 117 80-120 <br /> Sulfate as SO4 9.25 0.0210 0.200 10.0 92.5 80-120 <br /> Matrix Spike(1010137-MSI) Source:S101180-01 Prepared&Analyzed:01/12/01 <br /> Chloride 51.3 0.250 2.00 mg/1 50.0 2.83 96.9 75-125 <br /> Nitrate as N 13.2 0.0450 0.226 11.3 ND 117 75-125 <br /> Sulfate as SO4 94.1 0.210 2.00 100 3.18 90.9 75-125 <br /> Matrix Spike Dup(1010137-_MSD I Source:5101180-01 Prepared&Analyzed:01/12/01 <br /> Chloride 49.0 0.250 2.00 mg/l 50.0 2.83 92.3 75-125 4.59 20 <br /> Nitrate as N 13.7 0.0450 0.226 11.3 ND 121 75-125 3.72 20 <br /> Sulfate as SO4 94.6 0.210 2.00 100 3.18 91.4 75-125 0.530 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 5 of 61 <br /> 1 <br />