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C <br /> PRECISIO!* <br /> ENWRO-TECH <br /> Analytical Laboratory <br /> CES TIFICA TE OF ANALYSIS <br /> i r Wednesday, Mqy 18, 2005 <br /> Anention: Lovie Mendez <br /> Dillon & Murphy Report Page 3 of-5 <br /> P.O. BOX 2180 <br /> Lodi, CA 95241 <br /> y 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 "uREC Limits RPD Limit Notes <br /> Batch AE51702- Solvent Extraction <br /> Blank(AE51702-BLKI) Prepared&_Analyzed: 17-May-05 <br /> 12-Dibromo-3-chloropropane ND 0.0200 ugn <br /> 1,2-Dibromoethane(EDB) ND 0.0100 <br /> LCS(AE51702-BSI) _ Prepared&Analyzed: 17-May-05 <br />" 1,2-Dibromo-3-chloropropane 0.147 0.0200 ugll 0.147 100 75-125 <br /> 1,2-Dibromoethane(EDB) 0.141 0.0100 0.147 96 75-125 <br /> Matrix Spike(AE51702-MSI) Source: 5051601-01 Prepared&Analyzed: 17-May-05 <br /> 1,2-Dibromo-3-chloropropane 0.259 0.0204 ug/l 0.147 0.131 87 75-125 <br /> 1,2-Dibromoethane(EDB) 0.170 0.0100 " 0.147 ND 116 75-125 <br /> Matrix Spike Dup(AE51702-MSD1) Source: 5051601-01 Prepared&Analyzed: 17-May-05 <br /> 1,2-Dibromo-3-ch1oropropane 0.274 0.0200 ugll 0.147 0.131 97 75-125 6 20 <br /> 1,2-Dibromoethane(EDB) 0.156 0.0100 0.147 ND 106 75-325 9 20 <br /> L., <br /> F <br /> F <br /> F . <br /> FmgL-milligrams per liter-pprn DLR--Detection f.imu for Purpose of Reporting. <br /> ug L=micrograms per Lacr-ppb Exceptional sample matrices or interferences mqv <br /> result in higher detection limits_ <br /> F. RESPECTFULLY SUBMITTED, <br /> ` Jonathan Le,Laboratory Director <br /> i <br /> 1-741 N West Lana . Shite B2 Stockton CA. 95210 nhone: (209) 47-7-8105 Fax: (09) 477 8148 <br />