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1�11�G�y15 6 SUPERIOR MARTINEZ 330 P02 DEC 22 '92 12:39 <br /> �� <br /> Superior Preeis on Inc. <br /> analytic <br /> 825 Arnold Drive, Suite 114 ■ Martinez, California 94553 - (5 10; 2'29-1512/fax (5 10) 229-1526 <br /> i <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> f <br /> LABORATORY NO. : 87418 DATE RECEIVED: 12/14/92 j <br /> CLIENT: Decon Environmental Services DATE REPORTED: 12/21./92 I <br />'i CLIENT JOB NO. : STOCKTON STEEL DATE SAMPLED : 12/13/92 <br /> a . <br /> ANALYSIS FOR BENZENE, TOLUENE, ETHYL BENZENE & XYLENES <br /> by EPA SW-846 Methods 5030 and 8020 <br /> Concentration(mg/kg) <br /> LAB Ethyl <br /> Sample Identification Benzene Toluene Benzene Xylenes 1 <br /> ------------------- <br /> 1 SP-1, -2 ND<0 .003 ND40.0o3 ND<0 .003 ND<0 .003 <br /> 2 SP-3, -4 ND<0 .003 ND<0.003 ND<0 .003 ND<0.003 <br /> 3 SP-S, -f, ND<0 .003 ND<0. 003 ND<0�. 003 ND<0. 003 <br />{ 4 SP-7, -8 ND<0 .003 ND<0 .003 ND<0 .003 ND<0.003 <br /> 5 ' SP-9 ND<0.003 ND<0.003 ND<0 .003 ND<0.003 <br />. mg/kg - parts per million- (ppm) <br /> Method Detection Limit in Soil: 0 .003 mg/kg <br /> QAQC Summary: i <br /> Daily Standard run at 20 ug/L: RPD = <15% � <br /> MS/MSD Average Recovery = 92% Duplicate RPD = <1k <br /> � w <br /> } <br /> Richard Srna, Ph.D. <br /> Labora ry Direct <br /> i <br /> 1 <br /> i <br /> 3 <br /> Certified laboratories <br /> i <br /> i <br />