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Superior Precision Ar7alytical,. Ir]c. <br /> 825 Arnold Drive, Suite 1 14 Martinez, California 94553 15 10) 229-1512 / fax {`.i I O) 229-1526 <br /> F <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. : 86975 DATE RECEIVED: 10/23/92 <br /> CLIENT: Kleinfelder DATE REPORTED: 10/30/92 <br /> CLIENT JOB NO. : 24-220165-DOl DATE SAMPLED 10/22/92 <br /> ANALYSIS FOR BENZENE, TOLUENE, ETHYL BENZENE & XYLENES <br /> by EPA SW-846 Methods. 5030 and 8020 <br /> Concentration(ug/kg) <br /> LAB Ethyl <br /> # Sample Identification Benzene Toluenel Benzene Xylenes <br /> 1 74152 ND<3 ND<3 ND<3 ND<3 <br /> 2 74153 ND<3 ND<3 ND<3 ND<3 <br /> 3 74154 ND<3 ND<3 ND<3 ND<3 <br /> 4 74155 ND<3 ND<3 ND<3 9 <br /> 5 74156 ND<3 ND<3 ND<3 ND<3 <br /> 6 74157 ND<3 ND<3 ND<3 ND<3 <br /> pg/kg - parts per billio',n (ppb) <br /> Method Detection Limit in Soil : 3 pg%kg <br /> QAQC Summary: <br /> F . <br /> Daily Standard run at 20 pg/L: RPD <15% <br /> MS/MSD Average Recovery = 96% : Duplicate RPD = <2% <br /> Richard Srna, Ph.D. <br /> faAboratory Direc e- - <br /> Certified LX)oratones <br />