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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Friday, October 29, 2004 <br /> Attention- Guy Roy <br /> California Tank Lines Report Page 15of22 <br /> P O BOX 6245 <br /> Stockton, CA 95206 <br /> y I <br /> Total Petroleum Hydrocarbons-Gasoline <br /> Sample Information <br /> Sample ID. MW4 Sample Type: Grab <br /> 1Laboratory ID: 4092310-04 Project Name: QM Q3 2004 <br /> DatefTime Sampled. 22-Sep-04 13 45 by D Sorenson Sample Matrix Ground Water-Non Potable <br /> Test Parameter Result DLR Unit Dilution Batch Prepared Analysis Date Method Notes <br /> TPH-Gasoline 2950 100 ugll 1 AJ42916 30-Sep-04 30-Sep-04 LUFT GUMS <br /> Surrogate 4-Bromofluorobenzene 94% 75-125 <br /> I <br /> mg/L=milligrams per Liter=ppm DLR=Detection Limit for Purpose ofReportaig <br /> ug/L—micrograms per Luer—ppb Exceptional sample matrices or interferences may <br /> result in higher detectron hmus <br /> �PECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 7743 N West Lane Suite B2 Stockton CA 95210 Dhone (209) 477-8105 Fax (209) 477-8.148 <br />