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Superior PrI e ision Ar 'a erica/. ly4c. <br /> 825 Arnold Drive, Suite 1 14 • .,'Martinez, California 94553 - [510) 229-1512 / fax 15 10) 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. : 86730 DATE RECEIVED'.: 09/17/92 <br /> CLIENT: Kleinfelder DATE REPORTED.i: 09/24/92 <br /> CLIENT JOB NO. : 24-220165 DATE SAMPLED 09/16/92 <br /> ANALYSIS FOR BENZENE, TOLUENE,, .ETHYL BENZENE & XYLENES <br /> by EPA SW-846 Methodsi '5030 and 8020 <br /> Concentration(ug/kg) <br /> LAB Ethyl <br /> # Sample Identification Benzene Toluene Benzene Xylenes <br /> 1 74122 ND<3 ND<3 ND<3 15 <br /> 2 74123 ND<3 4 ND<3 14 <br /> 3 74124 ND<3 ND<3 ND<3 ND<3 <br /> 4 74125 ND<3 ND<3 ND<3 ND<3 <br /> 5 74126 ND<3 ND<3 ND<3 13 <br /> 6 74127 ND<3 ND<3 ND<3 ND<3 <br /> 74128 ND<3 3 ND<3 9 <br /> '__8 74129 ND<3 ND<3 ND<3 ND<3 <br /> erg/kg - parts per billion (ppb) <br /> Method Detection Limit in :Soil : 3 pg/kg <br /> QAQC Summary: <br /> Daily Standard run at 20 pg/L: RPD; ;'­ < 15% <br /> MS/MSD Average Recovery = 104 % : Duplicate RPD = < 2 <br /> Richard Srna, Ph.D. <br /> Laborator Director <br /> Certified Laboratories <br />