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a <br /> y 1 <br /> North State Environmental Laboratory CA FLAP# 1753 <br /> 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 00-1373 <br /> Client Compliance and Closure <br /> Project #12118 / QUIK STOP #121 <br /> Date Reported. 10/02/2000 <br /> Gasoline, BTEX and MTBE by Methods 8015M and 8020 <br /> Reporting Avg MS/MSD <br /> Analyte Method Limit Unat Blank Recovery RPD <br /> Am I <br /> soIine 8015M 50 ug/L ND 109 1 <br /> i <br /> Benzene 8020 0 . 5 ug/L ND 95 3 <br /> Toluene 8020 0 5 ug/L ND 104 2 <br /> Ethylbenzene 8020 0 . 5 ug/L ND 107 2 <br /> Xylenes 8020 1 . 0 ug/L ND 113 3 <br /> MTBE 8020 0 . 5 ug/L ND 103 3 <br /> I <br /> ELAP Certificate NO 175 <br /> Reviewed a djAppr ved I <br /> f <br /> J <br /> Page 2 of 2 <br /> John A Murphy, daboratory Director <br />