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North State Environmental Laboratory CA 6LAP# 1753 <br /> 90 South Spruce ANenue Suite V • South Sart Francisco CA 94080 • (650) 266-4563 • FAX (650) 266-4560 <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 99-1892 <br /> Client Western Geo-Engineers <br /> Project ARC Pump and Welding/ S French Tnpk Rd <br /> Date Reported 12/15/99 <br /> Gasoline, BTEX and MTBE by Methods 8015M and 8020 <br /> Analyte Method Result Unit Date Sampled. . _Date Analyzed <br /> AwiC,ample 99-1892-01 Client ID MW 1 1.2/02/99 WATER <br /> asoline 8015M 21000 ug/L 12/08/99 <br /> Benzene 8020 6600 ug/L <br /> Ethylbenzene 8020 1000 ug/L <br /> MTBE 8020 56 ug/L <br /> Toluene 8020 64 ug/L <br /> Xylenes 8020 1600 ug/L <br /> Sample 99-1892-02 Client ID MW 2 12/02/99 WATER <br /> Gasoline 8015M 4500 ug/L 12/08/99 <br /> Benzene 8020 550 ug/L <br /> Ethylbenzene 8020 400 ug/L <br /> MTBE 8020 20 ug/L <br /> Toluene 8020 14 ug/L <br /> Xylenes 8020 120 ug/L <br /> Sample 99-1892-03 Client ID MW 3 12/02/99 WATER <br /> Gasoline 8015M 11000 ug/L 12/08/99 <br /> Benzene 8020 1700 ug/L <br /> Ethylbenzene 8020 890 ug/L <br /> MTBE 8020 *70 ug/L <br /> Qoluene 8020 21 ug/L <br /> lenes 8020 840 ug/L <br /> * Page 1 <br /> Confirmed by GC/MS method 8260 <br />