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1010 North State Environmental <br /> Chemical Uaste Disposal Trucking Consulting <br /> CERTIFICATE OF ANALYSIS <br /> Quality Control/Quality Assurance <br /> Lab Number 98-1549 <br /> - Client , Western Geo-Engineers <br /> Pro)ect R-603 <br /> Date Reported 11/30/98 <br /> Gasoline, BTEX and MTBE by Methods 8015M and 8020 <br /> Reporting MS/MSD <br /> alyte Method Limit Unit Blank Recovery RPD <br /> Gasoline 8015M 50 ug/L ND 121 5 <br /> Benzene 8020 0 . 5 ug/L ND 109 0 <br /> Ethylbenzene 8020 0 . 5 ug/L ND 100 9 <br /> Toluene 8020 0 . 5 ug/L ND 105 4 <br /> Xylenes 8020 1 . 0 ug/L ND 109 6 <br /> MTBE 8020 0 5 ug/L ND 104 0 <br /> ELAP Certificate NO 1753 <br /> Review d and pp oved <br /> r <br /> r <br /> Page 5 of 6 <br /> John A Murphy,Laboratory Director <br /> P 0 Box 5624 • South San Francisco, California 94083 650-588 - 2838 FAX 588 - 1950 <br />