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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS <br /> Tuesday,January 11,2005 <br /> Attention: Becky Haskett <br /> Neil O. Anderson &Associate Report Page 3 ojs <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 AA50706-Solvent Extraction <br /> Blank(AA50706-BLxl) Prepared&Analyzed:07-Jan-05 <br /> `1,2-Dibromo-3chloropropane ND 0.0200 ugA <br /> 1,2-Dibromoethane(EDB) ND 0.0100 " <br /> LCS(AA50706-BSI) Prepared&Analyzed:07-Jan-05 <br /> .�1,2-Dibromo-3-chloropropane 0.307 0.0200 upll 0.294 104 75-125 <br /> 1,2-Dibromoethane(EDB) 0.300 0.0100 0.294 102 75-125 <br /> Matrix Spike(AA50706-MSI) Source:5010612-01 Prepared:07-Jan-05 <br /> - ep Analyzed:08-Jan-05 <br /> ` <br /> 1,2-13tbromo-3-chloropropane 0.341 0.0200 ugA 0.294 0.0299 106 75-125 <br /> 1,2-Dibromoediane(EDB) 0.283 0.0100 0.294 ND 96 75-125 <br /> Matrix Spike Dup(AA50706-MSDl) Source:5010612-01 Prepared:07-Jan-05 Analyzed:08-Jan-05 <br /> `1,2-Dibromo-3chloropmpene 0.317 0.0200 ugA 0.294 0.0299 98 75-125 7 20 <br /> 1,2-Dibromoedume(EDB) 0.282 0.0100 0.294 ND 96 75-125 0.4 20 <br /> 4 <br /> r <br /> r <br /> mg/L=milligramrper Liter=ppm DLR=Detection LimitforPurpose of Reporting. <br /> up/L=micrograms per Liter-ppb Ezceptlonal sample matrices or interferences may <br /> resuh 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 />