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,om North State Environmental Laboratory CA ELAP# 1751 <br /> • 90 South Spruce Avenue Suite V • South San Francisco CA 94080 (650) 266-4563 FAX (650) 266-4560 <br /> CERTIFICATE OF ANALYSIS <br /> Quality Control/Quality Assurance <br /> Lab Number 00-0812 <br /> Client Western Geo-Engineers <br /> Pro3ect SANCHEZ <br /> Date Reported 06/20/2000 <br /> Gasoline, BTEX and MTBE by Methods 8015M and 8020 <br /> Reporting Avg MS/MSD <br /> Analyte Method Limit Unit Blank Recovery RPD <br /> -.line 8015M 50 ug/L ND <br /> Benzene 8020 0 5 ug/L ND <br /> Ethylbenzene 8020 0 5 ug/L ND <br /> Toluene 8020 0 5 ug/L ND <br /> Xylenes 8020 1 0 ug/L ND <br /> MTBE 8020 0 5 ug/L ND <br /> ELAP Certificate NO 1753 <br /> weview d and <br /> Z;7 <br /> John A Murpny,Lab atory Director Page 3 of 3 <br />