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RECEIVED DEC 2 8 <br /> 1992 <br /> Superior Precision Ana/ytica/, /1-7c- <br /> FBI <br /> � 1Y <br /> 825 Arnold Drive, Suite 114 Martinez, California 94553 (510) 229-1512 /fax (51 0) 279-I ;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. : 87418 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 /> TSAR Concentration (mg/kg) <br /> # Sample Identification Gasoline Range <br /> ---- --------------------- -------------- <br /> 1 SP-1, -2 ND<1 <br /> 2 SP-3, -4 ND<1 <br /> 3 SP-5, -6 ND<1 <br /> 4 SP-7, -8 ND<1 <br /> 5 SP-9 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 k : Duplicate RPD = 3 % <br /> Richard Srna, Ph.D. <br /> } <br /> Laboratory Direbt6r <br /> i� <br /> i <br /> v <br /> Certified Laboratories <br />