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'i <br /> s <br /> SUPERIOR ANALYTICAL L-ABORATORY, INC. <br /> - 1385 FAIRFAX ST..STE. a •SAN FRANCISCO.CA 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 TOTAL PETROLEUM HYDROCARBONS <br /> by Modified CPA SW-846 Method 5030 and 8015 <br /> LAB Concentration fmg/kg) <br /> 0 Sample Identification Gasoline Range <br /> ---- --------------------- -----------•--- <br /> 1 MIDDLE OF PILE 2.7 <br /> 2 SOUTH END ND<1 <br /> 3 NORTH END 3.8 <br /> mg/kg - parts per million (ppm) <br /> Minimum Detection Limit for Gasoline in Soil: imglltg <br /> QAQC Summary: <br /> Daily Standard run at 2mg/L: RPD Gasoline = <15% <br /> MS/MSD Average Recovery = 104%: Duplicate RPD = 2% <br /> Richard Srna, Ph.D. <br /> Laboratory Dir or ~ <br /> 4.... <br /> OUTSTANDING QUALITY AND SERVICE <br />