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North State Environmental Laboratory CA ELAP#1753 <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 01-0551 <br /> Client Compliance and Closure <br /> Project QUIK STOP MARKET #121/MATECA, CA <br /> Date Reported 04/30/2001 <br /> Gasoline, BTEX and MTBE by Methods 8015M and 8020 <br /> Reporting Avg MS/MSD <br /> Analyte Method Limit Unit Blank Recovery RPD <br /> oline 8015M 50 ug/L ND 125 1 <br /> Benzene 8020 0 5 ug/L ND 101 1 <br /> Toluene 8020 0 5 ug/L ND 100 1 <br /> Ethylbenzene 8020 0 5 ug/L ND 102 2 <br /> Xylenes 8020 1 0 ug/L ND 102 2 <br /> MTBE 8020 0 5 ug/L ND 94 7 <br /> ELAP Certificate NO 175 <br /> Reye ed n 1p oved <br /> Page 5 of 5 <br /> John A Murphy,L oratory Director <br />