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North State Environmental Laboratory CA FLAP# 1755 <br /> 90 South Spruce Avenue Suite V • South San Francisco, CA 94080 - (650) 266-4563 • FAX (650) 266-4560 <br /> CERTIFICATE OF ANALYSIS <br /> Lab Number 99-1890 <br /> Client Western Geo-Engineers <br /> Pr03ect Sanchez Country Club Blvd <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 /> m le 99-1890-04 Client ID MW 4 12/02/99 WATER <br /> Gasoline 8015M ND 12/08/99 <br /> Benzene 8020 0 5 ug/L <br /> Ethylbenzene 8020 ND <br /> MTBE 8020 3 ug/L <br /> Toluene 8020 0 7 ug/L <br /> Xylenes 8020 2 ug/L <br /> Sample 99-1890-05 Client ID. MW 5 12/02/99 WATER <br /> Gasoline 8015M ND 12/08/99 <br /> Benzene 8020 4 ug/L <br /> Ethylbenzene 8020 2 ug/L <br /> MTBE 8020 30 ug/L <br /> Toluene 8020 6 ug/L <br /> Xylenes 8020 15 ug/L <br /> 0 <br /> Confirmed by GC/MS method 8260 <br /> page 2 <br />