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PRECISIOl <br /> ENVIRO-TECH <br /> Analytical Lahoratory CERTIFICATE OF ANALYSIS <br /> Wednesday, August 31, 200 <br /> Attention: Nancy Rosulek <br /> Neil O. Anderson & Associate Report Page 3of4 <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 AH52506-General Preparation <br /> Blank(AH52506-BLKI) Prepared&Analyzed:25-Aug-05 <br /> Nitrate as NO3 ND 1.00 mg/L <br /> LCS(AH52506-BSI) Prepared&Analyzed:25-Aug-05 <br /> Nitrate as NO3 55.6 1.00 mg/L 50.0 111 70-120 <br /> Matrix Spike(AH52506-MS1) Source:5082508-01 Prepared&Analyzed:25-Aug-05 <br /> Nitrate as NO3 120 2.00 mg/L 50.0 65.1 110 75-125 <br /> Matrix Spike Dup(AH52506-MSD1) Source:5082508-01 Prepared&Analyzed:25-Aug-05 <br /> Nitrate as NO3 125 2.00 mg/L 50.0 65.1 120 75-125 4 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 /> 1��5101z� <br /> Jonathan Le,Laboratory Director <br /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />