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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Wednesday, May 23, 2007 <br /> .ttention: Wayne Mannor <br /> Sumiden Wire Products Corp. ReporrPage6of7 <br /> 1412 EI Pinal Drive <br /> Stockton, CA 95208-0719 <br /> Conventional Chemistry Parameters by APHA/EPA 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 AE70307-General Preparation <br /> Blank(AE70307-BLK1) Prepared&Analyzed:03-May-07 <br /> Oil&Grease ND 3.00 mg/kg <br /> Duplicate(AE70307-DUPI) Source:7050209-01 Prepared&Analyzed:03-May-07 <br /> Oil&Grease 1500 3.00 mg/kg 1490 p_7 200 <br /> Reference(AE70307-SRMI) Prepared&Analyzed:03-May-07 <br /> Oil&Grease 3.70 3.00 mg/kg 4.00 92 80-120 <br /> mg/L=milligrams per Liter=ppm DLR=Detection Limit or Purpose <br /> u L=micrograms tr ase of Reporting. <br /> 8/ g per Liter=ppb Exceptionsl sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 3935 A. Coronado Ave Stockton CA. 95204 phone: (209) 477-8105 Filar- 1'21)41 J7-,-,Q 1.,Q <br />