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:-"c f VEE) n.. <br /> O Superior Precision Ana/ytica/, /rnc_ ��C 2 3 1991 <br /> 825 Arnold Drive, Suite 114 • Martinez, California 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. : 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 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 <br /> ---- --------------------- ------- ------- -------- ------- <br /> 1 01-N ND<0 . 003 ND<0 . 003 ND<0 . 003 ND<0 . 003 <br /> 2 02-N ND<0. 003 ND<0 . 003 ND<0 . 003 ND<0 . 003 <br /> 3 03-N ND<0 . 003 ND<0 . 003 ND<0 . 003 ND<0 . 003 <br /> 4 04-N ND<0 . 003 ND<0 . 003 ND<0 . 003 ND<0 . 003 <br /> 5 01-E ND<0 . 003 ND<0 . 003 ND<0 . 003 ND<0 . 003 <br /> 6 02-E ND<0 . 003 ND<0 . 003 ND<0 . 003 ND<0 . 003 <br /> 7 03-E 0 . 047 0 . 070 0 .32 1 . 0 <br /> 8 04-E ND<0 . 003 ND<0 . 003 ND<0 . 003 ND<0 . 003 <br /> 9 DESP3' ND<0 . 003 ND<0 . 003 ND<0 . 003 ND<0 . 003 <br /> w <br /> mg/kg - parts per million (ppm) <br /> Method Detection Limit in Soil : 0. 003 mg/kg <br /> QAQC Summary: <br /> Daily Standard run at 20 ug/L: RPD = <15k <br /> MS/MSD Average Recovery = 92k Duplicate RPD = <1k <br /> Richard Srna, Ph.D. <br /> XI'll, �I JJ <br /> Labora ry Dire for <br /> i <br /> Certified Laboratories <br />