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45%6' <br /> 4VNorth State Environmental <br /> Chemical Waste Disposal Trucking Consulting <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> Lab Number. 98-1102 <br /> Client . Western Geo-Engineers <br /> Project * R-603 <br /> Date Reported 09/22/98 <br /> Gasoline, BTEX and MTBE by Methods 8015M and 8020 <br /> al to Method Result Unit Date Sam led Date Analyzed <br /> ample • 98-1102-13 Client ID MW 13 09/08/9$ WATER <br /> Gasoline 8015M 2600 ug/L 09/21/98 <br /> Benzene 8020 0 . 8 ug/L <br /> Ethylbenzene 8020 ND <br /> MTBE 8020 *29 ug/L <br /> Toluene 8020 49 ug/L <br /> Xylenes 8020 490 ug/L <br /> Page 5 <br /> FonSirmed by GC/M5 Method 8260 <br /> Box 5624 • South San Francisco , California 94083 650- 588 - 2838 FAX 588 - 1950 <br />