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r <br /> owl%hk <br /> 47 North State Environmental <br /> Chemical Waste Disposal Trucking Consulting <br /> CERTIFICATE OF ANALYSIS <br /> Quality Control/Quality Assurance <br /> Lab Number 98-1255 <br /> Client Western Geo--Engineers <br /> Project ARC Pump & Welding <br /> 1211 S . French Camp Trnpk Rd. <br /> Date Reported- 10/13/98 <br /> Gasoline, BTEX and MTBE by Methods 8015M and 8020 <br /> Reporting MS/MSD <br /> Analyte Method Limit Unit Blank Recovery RPD <br /> Gasoline 8015M 50 ug/L ND 112 6 <br /> Benzene 8020 0 5 ug/L ND 106 9 <br /> Ethylbenzene 8020 0 5 ug/L ND 91 9 <br /> Toluene 8020 0 . 5 ug/L ND 92 11 <br /> Xylenes 8020 1 . 0 ug/L ND 99 12 <br /> MTBE 8020 0 . 5 ug/L ND 120 9 <br /> ELAP Certificate NO 1753 <br /> Reviewed and Approved <br /> �, ko d L Page 2 of 2 <br /> John A Murphy,Labcpatory Director <br /> P 0 Box 5624 • South San Francisco California 94083 650-588-2838 FAX 588 - 1950 <br />