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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Friday,August 19, 2005 <br /> Attention: Nancy Rosulek <br /> Neil O.Anderson &Associate Report Page 3 of <br /> 902 Industrial Way <br /> L Lodi, CA 95240 <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 /> f.. <br /> Batch AH51806-General Preparation <br /> Blank(AB51806-BLKI) Prepared&Analyzed: 15-Aug-05 <br /> Nitrate as NO3 ND 1.00 mg/L <br /> LCS(AH51806-BSI) Prepared&Analyzed: 15-Aug-05 <br /> Nitrate as NO3 50.2 1.00 mg/L 50.0 100 70-120 <br /> Matrix Spice(AH51806-MSI) Source:5081507-01 Prepared&Analyzed: 15-Aug-05 <br /> Nitrate as NO3 73.0 2.00 mg/L 50.0 19.0 108 75-125 <br /> Matrix Spike Dup(AH51806-MSDI) Source:5081507-01 Prepared&Analyzed: 15-Aug-05 <br /> Nitrate as NO3 72.8 2.00 mg/L 50.0 19.0 108 75-125 0.3 20 <br /> r_ <br /> L <br /> L <br /> V <br /> L <br /> L <br /> mg/L=milligrams per Liter—ppm DLR—Detection Limit for Purpose of Reporting. <br /> ug/L=micrograms per Liter—ppb Exctionowl sample matrices or interferences may <br /> result in higher detection limits. <br /> i. <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 7743 N. West Lane. Suite B2 Stockton CA. 95210 ohone: (209) 477-8105 Fax: (209) 477-8148 <br />