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'. • . 819 Striker Avenue,Suite 8 <br /> Sequoia <br /> Sacramento, 92 9564 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> w .sequoialabs.com <br /> Kleinfelder-Sacramento Project: Helena Chemical <br /> 3077 Fite Circle Project Number: 234850-60 Reported: <br /> Sacramento CA,95827 Project Manager: Steve Dalton 05/13/02 13:22 <br /> Anions by EPA Method 300.0-Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result limit Units Leve] Result %REC Limits RPD Limit Notes <br /> Batch 2050009-General Preparation <br /> Blank(2050009-BLKI) Prepared&Analyzed:05/01/02 <br /> Nitrate as N ND 0.23 mg/kg <br /> �LCS(2050009-BSI) Prepared&Analyzed: 05/01/02 <br /> Nitrate as N 11.6 0.23 mg/kg 11.3 103 80-120 <br /> Matrix Spike(2050009-MSI) Source:S204448-01 Prepared&Analyzed:05/01/02 <br /> Nitrate as N 1010 2.3 mg/kg 1130 110 80 75-125 <br /> Matrix Spike Dup(2050009-MSDI) Source:S204448-01 Prepared&Analyzed:05/01/02 <br /> INitrate as N 1070 2.3 mg/kg 1130 110 85 75-125 6 20 <br /> Batch 2050036-General Preparation <br /> Blank(2050036-BLKI) Prepared&Analyzed:05/03/02 <br /> INitrate as N ND 0.23 mg/kg <br /> LCS(2050036-BSI) Prepared&Analyzed:05/03/02 <br /> Nitrate as N 12.1 0.23 mg/kg 11.3 107 80-120 <br /> ,Matrix Spike(2050036-MSI) Source:S204448-21 Prepared&Analyzed:05/03/02 <br /> Nitrate as N 128 2.3 mg/kg 11.3 110 159 75-125 QM-07 <br /> ,Matrix Spike Dup(2050036-MSDI) Source:S204448-21 Prepared&Analyzed:05/03/02 <br /> Nitrate as N 136 2.3 mg/kg 11.3 110 230 75.125 6 20 QM-07 <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 14 of 16 <br />