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PRECISION <br /> ENVIRO-TECH <br /> ' Analytical Laboratory <br /> CER TIFICA TE OF ANALYSIS <br /> Wednesday,May 23, 2007 <br /> fittention: Wayne Mannor <br /> Sumiden Wire Products Corp. Report Page 5of7 <br /> 1412 EI Pinal Drive <br /> Stockton, CA 95208-0719 <br /> Metals by EPA 6000/7000 Series Methods-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 AD72014-General Prep <br /> Matrix Spike Dup(AD72014-MSDI) Source:7041810-01 Prepared:01-May-07 Analyzed:08-May-07 <br /> Barium 264 0.500 mg/kg 50.0 217 94 75-125 2 20 <br /> Selenium 38.6 0.500 50.0 ND 77 75-125 3 20 <br /> Batch AE70808-General Prep <br /> Blank(AE70808-BLK1) Prepared&Analyzed: 10-May-07 <br /> Mercury ND 0.100 mg/kg <br /> Matrix Spike(AE70808-MS1) Source:7050209-01 Prepared&Analyzed: 10-May-07 <br /> Mercury 0.0000278 0.100 mg/kg 0.0000232 75-125 <br /> Matrix Spike Dup(AE70808-MSDI) Source:7050209-01 Prepared&Analyzed: 10-May-07 <br /> )-*—,ury ND 0.100 mg/kg 0.0000232 75-125 20 <br /> f <br /> 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 limits. <br /> RESPECTFULLY SUBMITTED, <br /> I' <br /> Jonathan Le,Laboratory Director <br /> 3935.N. Coronado Ave Stockton C.A. 95204 phone: (209) 477-810.5 Frtx• 1'2noi d7-/-,QI eQ <br />