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i <br /> W �4 <br /> 4!%hk <br /> North State Environmental <br /> Chemical wade Trucking Consulting <br /> CERTIFICATE OF ANALYSIS <br /> Quality Control/Quality Assurance <br /> Lab Number. 98--977 <br /> Client Western Geo-Engineers <br /> _ProDect R603 <br /> Date Reported: 08/24/98 <br /> Diesel Range Hydrocarbons by Method 8015M <br /> Gasolane, BTEX and MTBE by Methods 8015M and 8020 <br /> Reporting MS/MSD <br /> Analyte Method Limit Unit Blank Recovery RPD <br />�asoline 8015M 50 ug/L ND 127 1 <br /> enzene 8020 0 . 5 ug/L ND 94 6 <br /> Ethylbenzene 8020 0 5 ug/L ND 94 5 <br /> Toluene 8020 0 . 5 ug/L ND 93 5 <br /> Xylenes 8020 1 0 ug/L ND 91 2 <br /> MTBE 8020 0 5 ug/L ND ill 1 <br /> Diesel 8015M 0 . 05 mg/L ND 72 7 <br /> ELAP Certificate NO 1753 <br /> Reviewed and Approved <br /> Page 2 of 2 <br /> John A Murphy,Laboratory Director <br /> P 0 Box 5624 South San Francisco Callfornla 94083 650 588 2838 FAX 588 1950 <br />