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North State Environmental <br /> 90,0NO 4V <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 Sampled Date Anal zed <br /> mple 98-1102-10 Client ID MW 10 09/08/98 WATER <br /> Gasoline 8015M 480 ug/L 09/21/98 <br /> Benzene 8020 ND <br /> Ethylbenzene 8020 ND <br /> MTBE 8020 *12 ug/L <br /> Toluene 8020 ND <br /> Xylenes 8020 22 ug/L <br /> Sample . 98-1102-11 Client ID. MW 11 09/08/98 WATER <br /> Gasoline 8015M ND 09/21/98 <br /> Benzene 8020 ND <br /> Ethylbenzene 8020 ND <br /> MTBE 8020 * 19 ug/L <br /> Toluene 8020 ND <br /> xylenes 8020 ND <br /> Sample, 98-1102-12 Client ID: MW 12 09/08/98 WATER <br /> Gasoline 8015M 2900 ug/L 09/21/98 <br /> Benzene 8020 5 ug/L <br /> Ethylbenzene 8020 220 ug/L <br /> BE 8020 ND <br /> luene 8020 4 ug/L <br /> Xylenes 8020 220 ug/L <br /> Page 4 <br /> * Confirmed b GC/MS Method 8260 <br /> P 0 Box 624 South San Francisco , California 94083 650- 588 -2838 FAX 588 - 1950 <br />