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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Thursday,February 3,2005 <br /> Attention: Abby Racco <br /> Neil O.Anderson &Associate Report Page IO of 16 <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 %RBC Limits RFD Limit Notes <br /> Batch AB50216-Solvent Extractions <br /> Blank(AB50216-BLK�_ Prepared&Analyzed:02-Feb-05 <br /> 1,2-Dibromo-3-chloropropane ND 0.0200 u9A <br /> 1,2-Dibromoetbane(BDB) ND 0.0100 " <br /> LCS(AB50216-BSI) Prepared&Analyzed:02-Feb-M _ <br /> 1,2-Dibromo-3chloropropane 0.135 0.0200 ugA 0.147 92 75-125 <br /> 1,2-Dibromoethane(EDB) 0.138 0.0100 0.147 94 75.125 <br /> Matrix Spike(AB50216-MS]) —Source:5012509-01 Prepared&Analyzcd:02-Feb-05 <br /> • 1,2-Dibromo-3-ch1mapropane 0.116 0.0200 ugll 0.147 ND 79 75-125 <br /> 1,2-Dibromoethane(EDB) 0.117 0.0100 0.147 No 80 75-125 <br /> MatrixSpike Du (p AI350216-MSD1) Source:5012509-0.1 Prepared&Analyzed:02-Feb-05 _ _ <br /> 1,2-Dibromo-3-chloropropane 0 0.0 <br /> .135 200 ug/10.147 ND 92 75-125 15 20 <br /> 1,2-Dibromoethane(EDB) 0.135 0.0100 " 0.147 ND 92 75-125 14 20 <br /> mgt=milligrams por Dler-ppm DLX=Detection LtmXfor Parpoxc of Reporting. <br /> ug/L=minngmau per Liter-ppb Exceptional sample matrices or interferences may <br /> re an m higher detection limits. <br /> • RESPECTFULLY SUBMITTED, <br /> N� <br /> Jonathan Le,Laboratory Director <br /> __ -- II — . . - 11n._-r..__ nd /9nm 47,7 erns Cw• /9/101 �r77_R 13R <br />