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'- PRECISI0lOw ` e <br /> ENVIRO-TECH <br /> L Analytical Laboratory CERTIFICATE OFANALYSIS <br /> LWednesday,April 27, 2005 <br /> Attention: Conor McGee <br /> Neil O.Anderson &Associate Report Page 4 of <br /> L 902 Industrial Way <br /> Lodi, CA 95240 <br /> LConventional Chemistry Parameters by APHA/EPA Methods-Quality Control <br /> Precision Enviro-Tech <br /> LReporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AD52505-General Preparation <br /> LBlank(AD52505-BLK1) Prepared&Analyzed:25-Apr-05 <br /> Nitrate as NO3 ND 1.00 mg/L <br /> I LCS(AD52505-BSI) Prepared&Analyzed:25-Apr-05 <br /> ,` Nitrate as NO3 53.0 1.00 mg/L 50.0 106 80-120 <br /> Matrix Spite(AD52505-MSI) Source:5042517-01 Prepared&Analyzed:25-Apr-05 <br /> Nitrate as NO3 55.9 2.00 mg/L 50.0 4.93 102 75-125 <br /> L <br /> Matrix Spice Dap(AD52505-MSDI) Source:5042517-01 Prepared&Analyzed:25-Apr-05 <br /> Nitrate as NO3 55.8 2.00 mg/L 50.0 4.93 102 75-125 0.2 20 <br /> LReference(AD52505-SRMI) Prepared&Analyzed:25-Apr-05 <br /> Nitrate as NO3 14.2 1.00 mg/L 15.3 93 80-110 <br /> L <br /> I <br /> L <br /> L <br /> L <br /> L <br /> L <br /> L mg/L=militligrams per Liter=ppm DLR=Detection Limjor Purpase ojReposting. <br /> ug/L—micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> L ,,W /;� <br /> L Jonathan Le,Laboratory Director <br /> 7743 N. West Lane. Suite B2 Stockton CA. 95210 Dhone: (209) 477-8105 Fax: (209) 477-8148 <br />