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P <br /> f' <br /> "'K <br /> SUPERIOR ANALYTICAL LABORATORY, INC. <br /> 1365 FAIRFAX St, STE. D. •SAN FRANCISCO, DA 94124 • PHONE (415) 647-2081 <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> LABORATORY NO. : 51356 DATE RECEIVED: 11/10/89 <br /> CLIENT: Leedshill - Herkenhoff, Inc. DATE REPORTED: 11/17/89 <br /> CLIENT JOB NO. : 9832. 12 <br /> ANALYSIS FOR BENZENE, TOLUENE, ETHYL BENZENE & XYLENES <br /> by EPA SW--846 Methods 5030 and 8020 <br /> Concentration(u9/kg) <br /> LAB Ethyl <br /> 0 SamPle Identification Benzene Toluene Benzene Xylenes <br /> 1 MIDDLE OF PILE 5 9 10 65 <br /> 2 SOUTH END NDC3 10 8 45 <br /> 3 NORTH END 4 13 10 75 <br /> ug/kg - parts Per billion. fPPbl <br /> E <br /> ni <br /> Minimum Detection Limit in Scil : 3.Oug/kg <br /> s <br /> �A QAQC Summary: <br /> Daily Standard run at 20ug/L: RPD <br /> MS/MSD Average Recovery = 91% : Duplicate RPD = Q% <br /> 4 Richard Srna, Ph.U. <br /> Laboratory Dir for <br /> OUTSTANDING QUALITY AND SERVICE <br />