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SUPEWR ANALYTICAL LABORATORY, INC. <br /> 13$5 FAIRFAX ST.,STE. D. • SAN FRANCISCO, CA 94124• PHONE (415)647-20 'J�? <br /> �YF11� <br /> C E R T I F I C A T E O F A N A L Y S I S 0k� <br /> LABORATORY NO. : 51388 DATE RECEIVED: 11/21/89 <br /> CLIENT: Leedshill - Herkenhoff, Inc. DATE REPORTED: 11/23/89 <br /> CLIENT JOB NO. : 9832. 12 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by Modified EPA SW-84C Method 5030 and 8015 <br /> LAB Concentration (mg/kg) <br /> 0 Sample Identification Gasoline Range <br /> 3 MW5-10 ND<1 <br /> 5 MW5-20 ND<1 <br /> 7 MW5-30 ND<1 <br /> 9 MW5-40 Mo<1 <br /> 11 MW5-50 ND<1 <br /> 12 MW5°-55 ND<1 <br /> mg/kg - parts per million (ppm) <br /> Minimum Detection Limit for Gasoline in Soil : 1mg/kg <br /> QAQC Summary: <br /> Daily Standard run at 2mg/L: RPD Gasoline <15% <br /> MS/MSD Average Recovery = 93%: Duplicate RPD = 15% <br /> Richard Srna, Ph.D. <br /> Laboratory Direc r <br /> OUTSTANDING QUALITYAND SERVICE <br />