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i <br /> O'dii 6 <br /> North State Environmental Laboratory Ca Et-Ap# ]75; <br /> 90 South Spruce Avenue Suite V - South San Franci,,co CA 94080 • (650) 266-4563 • FAX (650) 266-4560 <br /> CERTIFICATE OF ANALYSIS <br /> Lab Number 00-0811 <br /> Client Western Geo-Engineers <br /> Project ARC PUMP & WELDING <br /> Date Reported 06/21/2000 <br /> Gasoline, BTEX and MTBE by Methods 8015M and 8020 <br /> Analyte Method Result Unit Date Sampled_ Date AnalyzedAf& _ <br /> mple 00-0811-01 Client ID MW1 06/08/2000 WATER <br /> soline 8015M 10000 ug/L 06/13/2000 <br /> Benzene 8020 3200 ug/L <br /> Ethylbenzene 8020 350 ug/L <br /> MTBE 8020 *9 ug/L <br /> Toluene 8020 14 ug/L <br /> Xylenes 8020 690 ug/L <br /> Sample 00--0811-02 Client ID MW2 06/08/2000 WATER <br /> Gasoline 8015M 10000 ug/L 06/13/2000 <br /> Benzene 8020 660 ug/L <br /> Ethylbenzene 8020 120 ug/L <br /> MTBE 8020 17 ug/L <br /> Toluene 8020 23 ug/L <br /> Xylenes 8020 250 ug/L <br /> Sample 00-0811--03 Client ID MW3 06/08/2000 WATER <br /> Gasoline 8015M 4300 ug/L 06/13/2000 <br /> Benzene 8020 1500 ug/L <br /> Ethylbenzene 8020 180 ug/L <br /> MTBE 8020 ND<2 5 ug/L <br /> Toluene 8020 5 ug/L <br /> wenes 8020 81 ug/L <br /> *Confirmed by GC/MS method 8260 Page 1 <br />