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PRECISION''-No" <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS <br /> Tuesday,December 21, 2004 <br /> Attention: Becky Haskett <br /> Neil O. Anderson &Associate Report Page 3 of 5 <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 AL41610-Solvent Extraction <br /> L Blank(AL41610-BLK1) Prepared&Analyzed: 16-Dee-04 <br /> 1,2-Dibromo-3-chloropropme ND 0.0200 u9/1 <br /> 1,2-Dibromoethane(EDB) ND 0.0100 " <br /> LCS(AL41610-BSI) Prepared&Analyzed: 16-Dec-04 <br /> 1,2-Dibromo-3-chloropropane 0.277 0.0200 119/1 0.294 94 75-125 <br /> 1,2-Dibromoethane(EDB) 0.246 0.0100 " 0.294 84 75-125 <br /> Matrix Spike(ALA1610-MSI) Source:4120711-01 Prepared&Analyzed: 16-Dec-04 <br /> 1,2-Dibromo-3-chloropmpane 0.255 0.0200 ugA 0.294 ND 87 75-125 <br /> 1,2-Dibromoethane(EDB) 0.236 0.0100 H 0.294 ND 80 75-125 <br /> Matrix Spike Dup(AL41610-MSDI) Source:4120711-01 Prepared&Analyzed: 16-Dec-04 <br /> 1,2-Dibromo-3-chloropropane 0.301 0.0200 ugA 0.294 ND 102 75-125 17 20 <br /> 1,2-Dibromoethane(EDB) 0.247 0.0100 0.294 ND 84 75-125 5 20 <br /> L <br /> r. <br /> L <br /> L <br /> 1 <br /> L <br /> V <br /> L <br /> mg/L=mil@grmnsper Later=ppm DLR=Detection Limitfor Purpose of Repotting. <br /> ugE=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> Yr. result an higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> v Jonathan Le,Laboratory Director <br /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />