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PRECISIOAw -- <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Thursday, April 21, 2005 <br /> Attention: Becky Haskett <br /> Neil O. Anderson &Associate Report Page 3 of <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 AD51917-Solvent Extractions <br /> Blank(AD51917-BLK1) Prepared&Analyzed: 19-Apr-05 <br /> 1,2-Dibromo-3-chloropropane ND 0.0200 ug/1 <br /> 1,2-Dibromoethane(EDB) ND 0.0100 " <br /> INN LCS(AD51917-BS1) Prepared&Analyzed: 19-Apr-05 <br /> 1,2-Dibromo-3-chloropropane 0.313 0.0200 ug/l 0.294 106 75-125 <br /> 1,2-Dibromoethane(EDB) 0.282 0.0100 0.294 96 75-125 <br /> Matrix Spike(AD51917-MS1) Source:5041108-01 Prepared&Analyzed: 19-Apr-05 <br /> 1,2-Dibromo-3-chloropropane 0.253 0.0200 ug/l 0.294 ND 86 75-125 <br /> 1,2-Dibromoethane(EDB) 0.324 0.0100 0.294 ND 110 75-125 <br /> _ Matrix Spike Dup(AD51917-MSD1) Source:5041108-01 Prepared: 19-Apr-05 Analyzed:20-Apr-05 <br /> 1,2-Dibromo-3-chloropropane 0.253 0.0200 ug/l 0.294 ND 86 75-125 0 20 <br /> 1,2-Dibromoethane(EDB) 0.324 0.0100 0.294 ND 110 75-125 0 20 <br /> r <br /> mg/L=milligrams per Liter=ppm DLR=Detection Limit for Purpose of Reporting. <br /> uglL=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> r. result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />