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i <br /> PRECISIOR <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS ' <br /> Friday,April 22, 2005 + <br /> FAttention: Becky Haskett <br /> Neil O. Anderson &Associate Report Page 3 of 5 <br /> F, 902 Industrial Way <br /> Lodi, CA 95240 <br /> EDB and DBCP by EPA Method 544.1 -Quality Control <br /> F Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AD52123-Solvent Extraction <br /> F2, <br /> Blank(AD52123-BLK1) Prepared&Analyzed:21-Apr-05 <br /> 1,2-Dibromo-3-chloropropane ND 0.0200 ug/l <br /> 1,2-Dibromoethane(EDB) ND 0.0100 " <br /> )LCS(AD52123-BSI) Prepared&Analyzed: 21-Apr-05 <br /> 1,2-Dibromo-3-chloropropane 0.242 0.0200 ug/l 0.294 82 75-125 <br /> 1,2-Dibromoethane(EDB) 0.320 0.0100 0.294 109 75-125 <br /> FMatrix Spike(AD52123-MSI) Source:5042113-01 Prepared&Analyzed:21-Apr-05 <br /> 12-Dibromo-3-chloro ro ane 0.329 0.0200 ug/l 0.294 ND 112 75-125 <br /> P P <br /> t 1,2-Dibromoethane(EDB). 0.313 0.0100 0.294 ND 106 75-125 <br /> I Matrix Spike Dup(AD52123-MSDI) Source: 5042113-01 Prepared&Analyzed:21-Apr-05 <br /> l` 1,2-Dibromo-3-chloropropane 0.283 0.0200 ug/l 0.294 ISTD 96 75-125 15 20 <br /> 1,2-Dibrom6ethane(EDB) 0.283 0.0100 0.294 ND 96 75-125 10 20 <br /> I� <br /> mg/7,=milligrams per Liter=ppm DLR-Detection Limit for Purpose of Reporting. <br /> III} ug/L=microgr_ams per Liter=ppb Exceptional sample matrices or interferences may <br /> i result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> i <br /> Jonathan Le,Laboratory Director <br />+ 7743 N. West Lane . Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />