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RECEIVED G r 2 3 1992 <br /> nW Superior Precision Ana/ytica/, /nc. <br /> 825 Arnold Drive, Suite 114 • Martinez, California 94553 • (510) 229-1512/fax (51 0) 129-1 526 <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. : 87415 DATE RECEIVED: 12/14/92 <br /> CLIENT: Decon Environmental Services DATE REPORTED: 12/21/92 <br /> CLIENT JOB NO. ': STOCKTON STEEL DATE SAMPLED : 12/11/92 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by Modified EPA SW-846 Method 8015 <br /> LAB Concentration (mg/kg) <br /> # Sample Identification Diesel Range <br /> ---- --------------------- ----------------- <br /> 2 02-N 190 <br /> 3 03-N ND<10 <br /> 4 04-N ND<10 <br /> 6 02-E ND<10 <br /> 7 03-E 12000 <br /> 8 04-E ND<10 <br /> 9 DESP3 ' ND<10 <br /> mg/kg - parts per million (ppm) <br /> Method Detection Limit for Diesel in Soil : 10 mg/kg <br /> QAQC Summary: <br /> Daily Standard run at 200mg/L: RPD Gasoline = NA <br /> RPD Diesel = 7% <br /> MS/MSD Average Recovery =105% : Duplicate RPD = 2% <br /> Richard Srna, Ph.D. <br /> Labor4tory Direc or <br /> Certified Laboratories <br />