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r-HWOGAO-Tr-CH <br /> Ana/ytica/ Laboratory CERTIFICATE OF ANALYSIS <br /> r Attention: John Terayskis Monday, November 17, 2003 <br /> WGR Southwest, Inc. <br /> 315 W. Pine Street, Suite 1A <br /> Lodi, CA 95240 Report Page 13 of 14 <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 AJ30908-General Preparation <br /> Duplicate(AJ30908-DUP1) Source:0324741-01 Prepared&Analyzed:09-Oct-03 <br /> pH 7.59 pH Units 7.59 0 20 <br /> Batch AJ30909-General Preparation <br /> Blank(AJ30909-BLK1) Prepared:09-Oct-03 Analyzed: 10-Oct-03 <br /> Ammonia as N ND 0.1 mg/kg <br /> LCS(AJ30909-BS1) Prepared:09-Oct-03 Analyzed: 10-Oct-03 <br /> Ammonia as N 15.9 0.1 mg/kg 18.0 88 80-120 <br /> Matrix Spike(AJ30909-MSI) Source:0324741-12 Prepared:09-Oct-03 Analyzed: 10-Oct-03 <br /> Ammonia as N 42.0 1 mg/kg 50.0 4 76 75-125 <br /> Matrix Spike Dup(AJ30909-MSD1) Source:0324741-12 Prepared:09-Oct-03 Analyzed: 10-Oct-03 <br /> onia as N 43.0 1 mg/kg 50.0 4 78 75-125 2 20 <br /> mg/L=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 Tel.: (209) 477-8105 Fax: (209) 477-8148 <br />