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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Thursday,December 29, 2005 <br /> Attention: Nancy Rosulek <br /> Nell O.Anderson &Associate Report Page 2 of3 <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 AL51306-General Preparation <br /> Blank(AL51306-BLK1) Prepared&Analyzed: 13-Dec-05 <br /> ..r Nitrate as NO3 ND 1.00 mg/L <br /> LCS(AL51306-BSI) Prepared&Analyzed: 13-Dec-05 <br /> Nitrate as NO3 59.1 1.00 mg/L 50.0 118 70-120 <br /> " Matrix Spike(AL51306-MSI) Source:5121308-01 Prepared&Analyzed: 13-Dec-05 <br /> Nitrate as NO3 70.4 2.00 mg(L 50.0 10.4 120 75-125 <br /> Matrix Spike Dup(AL51306-MSD1) Source:5121308-01 Prepared&Analyzed: 13-Dec-05 <br /> Nitrate as NO3 69.7 2.00 mg/L 50.0 10.4 119 75-125 1 20 <br /> bin <br /> ftw <br /> r.. <br /> L <br /> too <br /> bm <br /> mg,E=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 /> Jonathan Le,Laboratory Director <br /> �. 7743 N. West Lane. Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fax: (209) 477-8148 <br />