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PRECISION ..r <br /> ENVIRO-TECH <br /> .. Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Tuesday, December 21, 2004 <br /> Attention: Becky Haskett <br /> Neil O. Anderson &Associate Report Page 4 of 5 <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 %aREC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AL41611 -General Preparation <br /> Blank(AL41611-BLKI) Prepared&Analyzed: 16-Dec-04 <br /> `Nitrate as NO3 ND 1.00 mg/L <br /> LCS(AL41611-BSI) Prepared&Analyzed: 16-Dec-04 <br /> r <br /> Nitrate as NO3 53.1 1.00 mg/L 50.0 106 80-120 <br /> Matrix Spike(AL41611-MSI) Source:4121612-01 Prepared&Analyzed: 16-Dec-04 <br /> Nitrate as NO3 28.7 1.00 mg(L 25.0 9.49 77 75-125 <br /> Matrix Spike Dup(AL41611-MSDI) Source:4121612-01 Prepared&Analyzed: 16-Dec-04 <br /> Nitrate as NO3 29.3 1.00 mg/L 25.0 9.49 79 75-125 2 20 <br /> Reference(AL41611-SRM1) Prepared&Analyzed: 16-Dec-04 <br /> ` Nitrate as NO3 14.7 1.00 mg/L 15.3 96 80-110 <br /> V <br /> 6. <br /> r <br /> r <br /> r <br /> mg/L=milligrams per Liter—ppm DLR=Detection Limitfor Purpose ofReporling. <br /> ugL=micrograms per Lifer—ppb Exceptional sample matrices or interferences may <br /> 'r result in higher detsaion limits. <br /> RESPECTFULLY SUBMITTED, <br /> 1�5/Oalz� <br /> ` Jonathan Le,Laboratory Director <br /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 ohone: (209) 477-8105 Fax: (209) 477-8148 <br />