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n <br /> Ainalyatical Laboratory CERTIFICATE OF ANALYSIS <br /> Attention: Mike Toy Wednesday,January 14, 2004 <br /> Dillon & Murphy <br /> P.O. BOX 2180 <br /> LOCK, CA 95241 Report Page 2 of 3 <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 Leel Result %REC Limits RPD Limit Notes <br /> Batch A000112-AA41309 <br /> Calibration Blank(A000112-CCB1) Prepared&Analyzed: 13-Jan-04 <br /> Nitrate as NO3 ' -—----- b.0C-- - . - mgh. - --- — —- - <br /> Calibration Check(A000112-CCVI) Prepared&Analyzed: 13-Ian-04 <br /> Nitrate as NO3 51.3 mg/L 50.0 103 0-200 <br /> Batch AA41309-General Preparation <br /> Blank(AA41309-BLK1) Prepared&Analyzed: 13-Jan-04 <br /> Nitrate as NO3 ND 1.00 mg/L <br /> LCS(AA41309-BSI) Prepared&Analyzed: 13-Jan-04 <br /> Nitrate as NO3 47.4 1.00 mg/L 50.0 95 80-120 <br /> Matrix Spike(AA41309-MS1) Source:0400153-01 Prepared&Analyzed: 13-Jan-04 <br /> Nitrate as NO3 53.0 2.00 mg/L 50.0 3.13 100 75-125 <br /> Matrix Spike Dup(AA41309-MSD1) Source:0400153-01 Prepared&Analyzed: 13-Jan-04 <br /> Nitrate as NO3 54.0 2,00 mg/L 50.0 3.13 102 75-125 2 20 <br /> Reference(AA41309-SRMI) Prepared&Analyzed: 13-Jan-04 <br /> Nitrate as NO3 38.1 1.00 mg/L 37.2 102 0-200 <br /> i <br /> mg/L=milligrams per Liter=ppm DLR=Detection Limitfor Purpose of Reporting. <br /> ug/L=micrograms per Liter-pph !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 Tel.: (209) 477-8105 Fax: (209) 477-8148 <br />