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` SUPERIOR ANALYTICAL. LABORATORY, INC, <br /> 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. : 52578 DATE RECEIVED: 10/02/90 <br /> CLI9NT: Leedahill - Herkenhoff, Inc. DATE REPORTED: 10/03/90 <br /> CLIENT JOB NO. : 90819. 12 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS. <br /> by Modified EPA SW-846 Method 5030 and 8015 <br /> LAB Concentration (ug/L) <br /> # Sample Identification Odsoline Range <br /> ---- __-------_- _--- <br /> -------------- <br /> E <br /> 1 MW-1 80 <br /> 3 MW-2 200 <br /> 5 MW-3 540 <br /> ug/L -• parts per billion (pnb) <br /> Minimum Detection Limit for Gasoline in Water: 50ug/L <br /> J Q:AQC Summary: <br /> Daily Standard run at 2mg/L: XDIFF Gasoline = <151K 1 <br /> 1�--. HS/MSD Average Recovery = 95,%: Duplicate RPD - <4% _ <br /> Richard Srna, Ph.D. <br /> wo <br /> f Labor ory Director <br /> " <br /> OUTSTANDING QUALITYAND SERVICE <br />