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PRECISION <br /> ENWRO-TECH <br /> Analytical Laboratory <br /> CERTIFICATE OFANAL YSIS <br /> Wednesday, May 23, 2007 <br /> Ittenlion: Wayne Mannor <br /> Sumiden Wire Products Corp. Report Page 4of7 <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 /> LCS(AD72014-BS1) Prepared:01-May-07 Analyzed:08-May-07 <br /> Matrix Spike(AD72014-MSI) Source:7041810-01 Prepared:01-May-07 Analyzed:08-May-07 <br /> Thallium 45.8 0.500 mg/kg 50.0 ND 92 75-125 <br /> Chromium 74.2 0.500 50.0 26.7 95 75-125 <br /> Nickel 75.3 0.500 50.0 25.2 100 75-125 <br /> Lead 60.1 0.500 50.0 5.64 109 75-125 <br /> Copper 87.5 0.500 50.0 31.1 113 75-125 <br /> Antimony 47.4 1.00 50.0 1.54 92 75-125 <br /> Selenium 37.6 0.500 50.0 ND 75 75-125 <br /> Molybdenum 46.4 0.500 50.0 ND 93 75-125 <br /> Vanadium 71.2 0.500 50.0 29.4 84 75-125 <br /> 112 0.500 50.0 52.2 120 75-125 <br /> ilium 53.0 0.100 50.0 ND 106 75-125 <br /> CIlium 46.9 0.500 50.0 ND 94 75-125 <br /> Barium 258 0.500 50.0 217 82 75-125 <br /> Silver 46.0 0.500 50.0 ND 92 75-125 <br /> Cobalt 58.1 0.500 50.0 8.28 100 75-125 <br /> Arsenic 47.2 0.500 50.0 2.07 90 75-125 <br /> Matrix Spike Dup(AD72014-MSD1) Source:7041810-01 Prepared:01-May-07 Analyzed:08-May-07 <br /> Beryllium 46.5 0.500 mg/kg 50.0 ND 93 75-125 0.9 20 <br /> Lead 58.5 0.500 50.0 5.64 106 75-125 3 20 <br /> Zinc 112 0.500 50.0 52.2 120 75-125 0 20 <br /> Vanadium 72.5 0.500 50.0 29.4 86 75-125 2 20 <br /> Thallium 46.6 0.500 50.0 ND 93 75-125 2 20 <br /> Arsenic 47.2 0.500 50.0 2.07 90 75-125 0 20 <br /> Antimony 43.8 1.00 50.0 1.54 85 75-125 8 20 <br /> Silver 37.9 0.500 50.0 ND 76 75-125 19 20 <br /> Nickel 75.6 0.500 50.0 25.2 101 75-125 0.4 20 <br /> Molybdenum 46.2 0.500 50.0 ND 92 75-125 0.4 20 <br /> Copper 87.4 0.500 50.0 31.1 113 75-125 0.1 20 <br /> Chromium 74.8 0.500 50.0 26.7 96 75-125 0.8 20 <br /> Cobalt 58.8 0.500 50.0 8.28 101 75-125 1 20 <br /> Cadmium 53.2 0.100 50.0 ND 106 75-125 0.4 20 <br /> mg,L=milligrams per Liter=ppm DLR=Detection Limit for purpose of Reporting. <br /> uglL=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> 1�j/01'r <br /> Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 phone: (209) 41-11-1310.5 Fiw- 0t)Q) Q7-_.Q t i. <br />