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E; l ,.RECEIVED DEC 2 8X392 <br /> o <br /> Superior eor P cision Ana/ytica/` Inc. <br /> E <br /> 825 Arnofd Drive, Suite ] 14 ■ Martinez, Cafifornia 94553 • {510) 229-1512 /fax (510) 229-1526 <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 BENZENE, TOLUENE, ETHYL BENZENE & XYLENES <br /> IF <br /> by EPA SW-846 Methods 5030 and 8020 <br /> Concentration (mg/kg) <br /> LAS Ethyl <br /> 4! # Sample Identification Benzene Toluene Benzene xylenes <br /> ---- -------........---------- ------- ------- ------- ------- <br /> I rSP-1, -2 <br /> ------1 -SP-1, -2 ND<0 . 003 ND<0 . 003 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 ;j`SP-5, -6 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 SSP-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 /> 4AQC Summary: <br /> Daily Standard run at 20 ug/L: RPD = <155k <br /> MS/MSD Average Recovery = 929s Duplicate RPD = <1's <br /> Richard Srna, Ph.D. <br /> 1 <br /> Labora ory Director <br /> I <br /> IIL! <br /> 1 i <br /> 5 II <br /> yF` <br /> T <br /> Y <br /> Certified Laboratories <br /> .n <br />