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iowm%o <br /> North State Environmental Laboratory CA ELAP# 1753 <br /> �n 90 South Spruce Avenue Suite V • South San 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 /> Quality Control/Quality Assurance <br /> Lab Number 00-1831 <br /> Client Western Geo-Engineers <br /> ProDect ARC PUMP & W <br /> Date Reported 12/18/2000 <br /> Gasoline, BTEX and MTBE by Methods 8015M and 8020 <br /> Reporting Avg MS/MSD <br /> Analyte Method Limit Unit Blank Recovery RPD <br /> Gasoline 8015M 50 ug/L ND 117 2 <br /> 18zene 8020 0 5 ug/L ND 89 1 <br /> Toluene 8020 0 5 ug/L ND 89 3 <br /> Ethylbenzene 8020 0 5 ug/L ND 89 1 <br /> Xylenes 8020 1 0 ug/L ND 90 1 <br /> MTBE 8020 0 5 ug/L ND 89 6 <br /> ELAP Certificate NO 1753 <br /> Rev}i�!we and App ped > <br /> l , <br /> Page 2 of 2 <br /> John A Murphy,Laboratory Director <br />