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SUPERIOR ANALYTICAL LABORATORY, INC <br /> 1385 FA►RFAx ST, STE D • 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 /> jLABORATORY NO. 51447 DATE RECEIVED <br /> CLIENT Leedshill - Herkenhoff, Inc. 12/08/89 <br /> CLIENT JOB NO 983^2 12 DATE REPORTED 12/18/$9 <br /> ANALYSIS FOR TOTAL PERTROLEUM HYDROCARBONS <br /> by Modified EPA SW-846 Method 8015 <br /> LAB <br /> # Sample Identification Concentration (mg/l ) <br /> _____________________ Gasoline Range <br /> - <br /> 1 MW1 <br /> ? MW2 110 <br /> JMWS <br /> NDt1 <br /> 4 MW4 <br /> 5 MW5 ND< i <br /> 60 <br /> mg/L - parts per million (ppm) <br /> Minimum Detection Limit for Gasoline in Water: 1mg/L <br /> QAQC Summary <br /> Daily Standard run at 200mg/L. RPD Gasoline =05% <br /> MS/MSD Average Recovery =96% Duplicate RPD -c8% <br /> Richard SrnaWeo <br /> PIS <br /> Laboratory <br /> r OUTSTANDING QUALITYAND SERVICE <br />