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PRECISI011110 <br /> ENVIR©-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Friday,April 22, 2005 <br /> Attention: Rich Ryan <br /> Neil 4. Anderson &Associate Report Page 13 of 17 <br /> 902 Industrial Way <br /> Lodi, CA 95240 <br /> Metals by EPA 6000/7000 Series Methods- Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %oREC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AD52127-EPA 3050E <br /> Blank(AD52127-BLK1) Prepared&Analyzed:21-Apr-05 <br /> Lead ND 0.0100 mg/kg <br /> LCS(AD52127-BS1) Prepared&Analyzed:21-Apr-05 <br /> Lead 1.01 0.0100 mg/kg 1.00 101 80-120 <br /> Matrix Spike(AD52127-MS1) Source:5042114-01 Prepared&Analyzed:21-Apr-05 <br /> Lead 45.9 0.500 mg/kg 50.0 3.60 85 75-125 <br /> Matrix Spike Dup(AD52127-MSD1) Source:5042114-01 Prepared&Analyzed:21-Apr-05 <br /> Lead 46.3 0.500 mg/kg 50.0 3.60 85 75-125 0.9 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 /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />