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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS <br /> Thursday,January 20, 2005 <br /> Attention: Abby Racco <br /> Neil O.Anderson &Associate Report Page 6of12 <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 %RBC RPD <br /> Analyte Resuk Limit Units Level Result %RF.0 Limits RPD Limit Nates <br /> Batch AA50706-Solvent Extraction <br /> Blank(AA50706-111,Kl) __Prepared&Analyzed:07-Tan-05 _ <br /> 1,2-Dibromo-3-chlompropne ND 0.0200 ue <br /> 1,2-Dbromoethane(EDB) ND 0.0100 " <br /> LCS(AA50706-BSI) Prepared&Analyzed:07-Jan-05 <br /> 1,2-Dibromo-3-chloropmpanc 0.307 0.0200 ugA 0.294 104 75-125 <br /> 1,2-Dibromoethanc(EDB) 0.300 0.0100 0.294 102 75-125 <br /> MatrixSpike(AA50706-MSI) Source:5010612-01_Prepared: 07-Jan-05 Analyzed 08-Jan-05 <br /> 1,2-Dibromo-3-chloropropene 0.341 0.0200 Ug/1 0.294 0.0299 106 75-125 <br /> 1,2-Dibromoethane(EDB) 0.283 0.0100 0.294 ND 96 75-125 <br /> 10—Matrix Spike Dap(AA50706-MSD1) Source:5010612-01 Prepared:07-Jan-05 Analyzed:08-Jan-05 <br /> 1,2-Dibromo-3-cbloropropane 0.317 0.0200 ug/l 0.294 0.0299 98 75-125 7 20 <br /> 1,2-Dibromoethane(EDB) 0.282 0.0100 0.294 SID 96 75-125 0.4 20 <br /> mg,E-mi7ligramsper liter-ppm DLR-rhtec m LimitforPurpose efReponing. <br /> ug/L-microgromsperLaer-ppb Eoceptienol sample matrices or muiferences may <br /> result in hiAer detection limits. <br /> RESPECTFULLY/SUjBNUTTTFFD, <br /> Jonathan Le,Laboratory Director <br /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 vhone: (209) 477-8105 Fax: (209) 477-8148 <br />