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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Tuesday,January 3, 2006 <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 /> r_ <br /> Batch AL51509-General Preparation <br /> Blank(AL51509-BLKI) Prepared&Analyzed: 15-Dec-05 <br /> 1` Nitrate as NO3 ND 1.00 mg/L <br /> LCS(AL51509-BSI) Prepared&Analyzed: 15-Dec-05 <br /> LNitrate as NO3 58.7 1.00 mg(L 50.0 117 70-120 <br /> Matrix Spike(AL51509-MSI) Source:5121518-01 Prepared&Analyzed: 15-Dec-05 <br /> Nitrate as NO3 72.5 2.00 mg/L 50.0 10.3 124 75-125 <br /> LMatrix Spike Dup(AL51509-MSDI) Source:5121518-01 Prepared&Analyzed: 15-Dec-05 <br /> Nitrate as NO3 70.8 2.00 mg/L 50.0 10.3 121 75-125 2 20 <br /> L <br /> f. <br /> L <br /> L <br /> L <br /> mgE=milligrams perLaer=ppm DLR-Defection Llmif for Purpose afRepor ing. <br /> ugT=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <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 />