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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Friday,November 11, 2005 <br /> Attention: Nancy Rosulek <br /> Neil O. Anderson &Associate Report Page 2of3 <br /> 902 Industrial Way <br /> 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 /> Batch AJ52804-General Preparation <br /> Blank(AJ52804-BLKI) Prepared&Analyzed:28-Oct-05 <br /> Nitrate as NO3 ND 1.00 mg/L <br /> LCS(AJ52804-BSI) Prepared&Analyzed:28-Oct-05 <br /> LNitrate as NO3 57.0 1.00 mg/L 50.0 114 70-120 <br /> Matrix Spike(AJ52804-MSI) Source:5102812-01 Prepared&Analyzed:28-Oct-05 <br /> Nitrate as NO3 56.8 2.00 mg/L 50.0 0.472 113 75-125 <br /> Matrix Spike Dup(AJ52804-MSDI) Source:5102812-01 Prepared&Analyzed:28-Oct-05 <br /> Nitrate as NO3 57.4 2.00 mg/L 50.0 0.472 114 75-125 1 20 <br /> L <br /> L <br /> L <br /> my/L=milligrams per Liter=ppm DLR=Detection Limajor Purpose of Reporting. <br /> 1 ug/L-micrograms per Liter-ppb Exceptional sample matrices or interferences may <br /> Lresult in higher detection limits. <br /> L RESPECTFULLY SUBNUTT�ED, <br /> Jonathan Le,Laboratory Director <br /> 7743 N. West Lane. Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />