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North State Environmental <br /> Chemical Waste Disposal Trucking Consulting <br /> C E R T I F I C A T E Q 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 /> —Analvto Method Result Unit Date Sampled Date Analyzed <br /> ample 98-1102-07 Client ID MW 7 09/08/98 WATER <br /> Gasoline 8015M ND 09/21/98^ <br /> Benzene 8020 ND <br /> Ethylbenzene 8020 ND <br /> MTBE 8020 ND <br /> Toluene 8020 ND <br /> Xylenes 8020 ND <br /> Sample . 98-1102-08 Client ID MW 8 09/08/98 WATER <br /> Gasoline 8015M 3400 ug/L 09/21/98 <br /> Benzene 8020 5 ug/L <br /> Ethylbenzene 8020 ND <br /> MTBE 8020 ND <br /> Toluene 8020 58 ug/L <br /> Xylenes 8020 i50 Uy/L, <br /> Sample . 98-1102-09 Client ID. MW 9 09/08/98 WATER <br /> Gasoline 8015M ND 09/21/98 <br /> Benzene 8020 ND <br /> Ethylbenzene 8020 ND <br /> TBE 8020 ND <br /> luene 8020 ND <br /> ylenes 8020 ND <br /> * Confirmed by GC/MS Method 8260 Page 3 <br /> P 0 Sox 5624 • South San Francisco California 94083 • 650- 588-2838 FAX 588 - 1950 <br />