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PRECISION <br /> ENVIRO-TECH <br /> Analytical Lahoratory CERTIFICATE OF ANAL <br /> Wednesday,May 23, 2007 <br /> .ttention: Wayne Mannor <br /> Sumiden Wire Products Corp. Report Page 3of7 <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 /> Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AD72014-General Prep <br /> Blank(AD72014-BLKI) Prepared:01 07 Analyzed:08-May-07 <br /> Copper ND 0.500 mg/kg - <br /> Silver ND 0.500 " <br /> Zinc ND 0.500 " <br /> Vanadium ND 0.500 " <br /> Thallium ND 0.500 " <br /> Selenium ND 0.500 " <br /> Antimony ND 1.00 " <br /> Lead ND 0.500 " <br /> Molybdenum ND 0.500 " <br /> Chromium ND 0.500 " <br /> Cobalt ND 0.500 " <br /> °`1C ND 0.500 " <br /> Sm ND 0.500 " <br /> Nickel 0.214 0.500 " <br /> Cadmium ND 0.100 " <br /> Beryllium ND 0.500 " <br /> LCS(AD72014-BSI) Prepared:01-May-07 Analyzed:08-May-07 <br /> Vanadium 48.5 0.500 mg/kg 50.0 97 80-120 <br /> Lead 49.8 0.500 50.0 100 80-120 <br /> Chromium 49.7 0.500 50.0 99 80-120 <br /> Molybdenum 49.6 0.500 50.0 99 80-120 <br /> Copper 49.4 0.500 50.0 99 80-120 <br /> Zinc 52.9 0.500 50.0 106 80-120 <br /> Nickel 50.0 0.500 50.0 100 80-120 <br /> Thallium 48.7 0.500 50.0 97 80-120 <br /> Beryllium 50.2 0.500 50.0 100 80-120 <br /> Cobalt 49.9 0.500 50.0 100 80-120 <br /> Antimony 48.9 1.00 50.0 98 80-120 <br /> Cadmium 49.7 0.100 50.0 99 80-120 <br /> Barium 49.3 0.500 50.0 99 80-120 <br /> Arsenic 50.4 0.500 50.0 101 80-120 <br /> Silver 49.6 0.500 50.0 99 80-120 <br /> Selenium 50.2 0.500 50.0 100 80-120 <br /> mg/L=milligrams per Liter=ppm DLR=Detection Limit for Purpose ofReportmg. <br /> ug/L=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> o1z <br /> Jonathan Le,Laboratory Director <br /> 3935N. Coronado Ave Stockton CA. 95204 phone: (209) 4'77-$105 Fax: (209) 477-R71R <br />