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R' <br /> PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Sunday, March 6, 2005 <br /> Attention: Rebecca Haskett <br /> t-. Neil O.Anderson &Associate Report Page 3 of5 <br /> 902 Industrial Way <br /> Lodi, CA 95240 <br /> EDB and DBCP by EPA Method 504.1 -Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AC50316-Solvent Extractions <br /> r <br /> �t Blank(AC50316-BLK1) Prepared&Analyzed:03-Max-05 <br /> 1,2-Dibromo-3-chloropropane ND 0.0200 ugll <br /> f"- 1,2-Dibromoethane(EDB) ND 0.0100 <br /> ,f LCS(AC50316-BS1) Prepared&Analyzed:03-Mar-05 <br /> 1,2-Dibromo-3-chloropropane 0.129 0.0200 ugll 0.147 88 75-125 <br /> [� 1,2-Dibromoethane(EDB) 0.130 0.0100 0.147 88 75-125 <br /> 11 <br /> 4 Matrix Spike(AC50316-MSI) Source:5022339-01 Prepared&Analyzed: 03-Mar-05 <br /> 1,2-Dibromo-3-chloropropane 0.176 0.0200 ug/l 0.147 ND 120 75-125 <br /> 1,2-Dibromoethane(EDB) 0.159 0.0100 1. 0.147 ND 108 75-125 <br /> Matrix Spike Dup(AC50316-MSDI) Source:5022339-01 Prepared&Analyzed:03-Mar-05 <br /> 1,2-Dibromo-3-chloropropane 0.171 0.0200 ugll 0.147 ND 116 75-125 3 20 <br /> 1,2-Dibromoethane(EDB) 0.160 0.0100 0.147 ND 109 75-125 0.6 20 <br /> t + <br /> 4 <br /> s f. <br /> a <br /> t - <br /> rm <br /> mg'L=milligrams per Liter=ppm DLR—Detection Limit for Purpose ofReporimg. <br /> 1 ug/L=micrograms per Liter=ppb Fxceptional sample matrices or interferences may <br /> r-.+ <br /> result in higher detection limits, <br /> RESPECTFULLY SUBMITTED <br /> (��j 10Lr� <br /> k <br /> 1 Jonathan Le,Laboratory Director <br /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />