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SUPERIOR ANALYTICAL LABORATORY, INC. <br /> 1555 BURKE, UNIT I • SAN FRANCISCO, CA 94124 • PHONE (415) 647-2081 DOHS #1332 <br />' C E R T I. F I C A T E O F A N A L .Y. S I S <br /> S <br /> LABORATORY NO. : 53246 . DATE RECEIVED: 02/28/91 <br /> CLIENT: URIAH, ' INC DATE REPORTED: 03/08/91 <br /> CLIENT JOB NO. : DON ' S BUGGIE < <br /> ANALYSIS FOR BENZENE , TOLUENE, ETHYL BENZENE & XYLENES <br /> by EPA SW-846 Methods 50301�and 8020 <br /> Concentration(ug/kg) <br /> LAB Ethyl <br /> # Sample Identification Benzene Toluene Benzene Xylenes <br /> 1 Al 4900 82000 22000: 170000 <br /> 2 A2 4400 98000 73000 540000 <br /> j 3 A3 S 68 3 23 <br /> I 4 A4 ND<3 150 ND<3 ND<3 <br /> ug/kg - parts per billion (ppb) <br /> Minimum Detection Limit in Soil : 3 . 0ug/kg <br />{ QAQC Summary: <br /> Daily Standard run at 20ug/L: %Diff 80210 = 0.5 <br /> MS/MSD Average Recovery =' 96% Duplicate RPD = . 3% <br />{ <br /> Richard Srna, Ph . D. <br /> 1 � , <br /> La—bordtory Dir for <br /> f <br /> k <br /> I <br /> j OUTSTANDING QUALITY AND SERVICE <br />