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F! <br /> PRECISION <br /> 0 ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS <br /> k <br /> ri <br /> Thursday,April 21, 2005 <br /> Attention: Nancy Rosulek i <br /> Neil O. Anderson &Associate Report Page 3 of 5 <br /> 1 902 Industrial Way <br /> Lodi, CA 95240 <br /> r <br /> EDB and DBCP by EPA Method 504.1 - Quality Control <br /> a <br /> Precision Enviro-Tech <br /> F1Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %RDC Limits RPD Limit Notes <br /> FBatch AD51917-Solvent Extractions # <br /> Blank(AD51917-BLKl) Prepared&Analyzed: 19-Apr-05 <br /> 1,2-Dibromo-3-chloropropane ND 0.0200 ugll <br /> 1,2-Dibromoethane(DDB). ND 0.0100 <br /> LCS(AD 51917-BSI) Prepared&Analyzed: 19-Apr-05 <br /> r <br /> 1,2-Dibrorimo-3-chloropropane 0.313 0.0200 ug/1 0.294 106 75-125 y <br /> 1,2-Dibromoethane(EDB) 0.282 0.0100 0.294 96 75-125 !] <br /> ' Matrix Spike(AD51917-MSI) Source:5041108-01 Prepared&Analyzed: 19-Apr-05 <br /> 1,2-Dibromo-3-chloropropane 0.253 0.0200 ugA 0.294 ND 86 75-125 ` <br /> d <br /> F1 1,2-Dibromobthane(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 /> 1,2-1)ibromoethane(EDB) 0.324 0.0100 0.294 ND 110 75-125 0 20 <br /> Fi <br /> k <br /> Fj I <br /> - i <br /> M <br /> I mg/L=milligrams per Liter—ppm DLR—Detection Limit for Purpose of Reporting. <br /> ug/L=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection Iimits. i <br /> A j RESPECTFULLY SUBMITTED, <br /> Fl. Jonathan Le Laboratory Director <br /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />