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_ R�CE1VEp nr <br /> Superior Precision Anai ericai, Inc- U`c 1� <br /> 825 Arnold Drive, Suite 114 • Martinez, California 94553 • 15101229-1512 /fax (510) 229-1 ;26 <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 5030 and 8015 <br /> LAB Concentration (mg/Kg) <br /> # Sample Identification Gasoline Range <br /> ---- --------------------- -------------- <br /> 1 01-N ND<1 <br /> 5 01-E ND<1 <br /> 9 DESP3' ND<1 <br /> mg/kg - parts per million (ppm) <br /> Method Detection Limit for Gasoline in Soil : 1 mg/kg <br /> QAQC Summary: <br /> Daily Standard run at 2mg/L: RPD Gasoline = <15 <br /> MS/MSD Average Recovery = 91%- Duplicate RPD = 3% <br /> Richard Srna, Ph.D. <br /> Laboraybry Director( <br /> I <br /> Certified Laboratories <br />