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PRECISIO <br /> ENVIRO-77M <br /> Analytical Laboratory CER TIFICA TE OF ANAL YSIS <br /> Thursday,July 5, 2007 <br /> Attention: Wayne Mannor <br /> Sumiden Wire Products Corp. deport Page 3 of <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 AF72213-General Prep <br /> LCS(AF72213-BS1) Prepared&Analyzed:22-Jun-07 <br /> Matrix Spike(AF72213-MS1) Source:706120841 Prepared&Analyzed:22-Jun-07 _ <br /> Zinc 55.0 0.500 mg/kg 40.0 18.4 92 70-125 <br /> Beryllium 29.4 0.500 40.0 ND 74 70-125 <br /> Nickel 31.1 0.500 40.0 0.116 77 70-125 <br /> Cadmium 30.9 0.100 40.0 ND 77 70-125 <br /> Cobalt 30.1 0.500 40.0 ND 75 70-125 <br /> Chromium 30.3 0.500 40.0 ND 76 70-125 <br /> Copper 71.8 0.500 40.0 34.3 94 70-125 <br /> Molybdenum 29.9 0.500 40.0 ND 75 70-125 <br /> Lead 30.6 0.500 40.0 ND 76 70-125 <br /> Antimony 29.5 1.00 40.0 ND 74 70-125 <br /> Selenium 29.4 0.500 40.0 ND 74 70-125 <br /> Silver 29.0 0.500 40.0 ND 72 70-125 <br /> Vanadium 34.4 0.500 40.0 4.62 74 70-125 <br /> Arsenic 31.6 0.500 40.0 0.582 78 70-125 <br /> Barium 38.7 0.500 40.0 7.33 78 70-125 <br /> Thallium 28.3 0.500 40.0 ND 71 70-125 <br /> Matrix Spike Dup(AF72213-MSD1) Source:7061208-01 Prepared&Analyzed:22-Jun-07 <br /> Barium 39.3 0.500 mg/kg 40.0 7.33 80 70-125 2 20 <br /> Nickel 31.7 0.500 40.0 0.116 79 70-125 2 20 <br /> Zinc 56.0 0.500 40.0 18.4 94 70-125 2 20 <br /> Vanadium 34.0 0.500 " 40.0 4.62 73 70-125 1 20 <br /> Thallium 34.0 0.500 40.0 ND 85 70-125 18 20 <br /> Selenium 30.3 0.500 40.0 ND 76 70-125 3 20 <br /> Silver 29.7 0.500 40.0 ND 74 70-125 2 20 <br /> Lead 31.6 0.500 40.0 ND 79 70-125 3 20 <br /> Arsenic 31.7 0.500 40.0 0.582 78 70-125 0.3 20 <br /> Molybdenum 30.3 0.500 40.0 ND 76 70-125 1 20 <br /> Copper 72.7 0.500 40.0 34.3 96 70-125 1 20 <br /> Chromium 30.6 0.500 40.0 ND 76 70-125 1 20 <br /> Cobalt 30.7 0.500 40.0 ND 77 70-125 2 20 <br /> Cadmium 31.2 0.100 40.0 ND 78 70-125 1 20 <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 /> Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 phone: (209) 477-8105 Fax: (209) 477-8148 <br />