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RUN <br /> EPP <br /> - a m J, .� - <br /> {aN <br /> M� <br /> i <br /> SUPERIOR ANALYTICAL LABORATORY, INC. <br /> 1555 BURKE UNIT I- 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. : 51982 DATE RECEIVED: 04/24/90 <br /> CLIENT: Alton Geoscience DATE REPORTED: 05/02/90 <br /> CLIENT JOB NO. : 30-140 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by Modified EPA SW-848 Method 5030 and 8015 <br /> LAS Concentration (mg/kg) <br /> 0 Sample Identification Gasoline Range <br /> 1 P1-4' ND<1 <br /> — 3 P2-5' 3 <br /> mg/kg - parts per million (ppm) <br /> Minimum Detection Limit for Gasoline in Soil : 1mg/kg <br /> QAOC Summary: <br /> i <br /> Daily Standard run at 2mg/L: RPD Gasoline = <15% <br /> MS/MSD Average Recovery = 81%: Duplicate RPD = ix <br /> Comments: * Hydrocarbons contributing to total concentration due not <br /> match typical gasoline pattern. <br /> 4 <br /> Richard Srna, Ph.D/, <br /> aboratory D'rect r <br /> OUTSTANDING QUALITYANG SERVICE <br />