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�rt ' <br /> l <br /> SUPERIOR ANALYTICAL LABORATORY, INC. <br /> 1385 FAIRFAX ST., STF. D. •SAN FRANCISCO, CA 94124 ° PHONE(415) 647-2091 �q <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. : 51288 DATE RECEIVED: 11/21/89 <br /> CLIENT: Leedshill _ Herkenhoff. Inc. D <br /> CLIENT JOB NO. : 9832. 12 ATE REPORTED: 11/21/89 <br /> ANALYSIS FOR BENZENE, TOLUENE. ETHYL BENZENE & XYLENES <br /> by EPA SW-845 Methods 5030 and 8020 <br /> M' LAB Concentration(ug/kg) <br /> 1# Sample Identification Ethyl <br /> -- tion Benzene Toluene Benzene Xylenes <br /> 3 MW5-10 ND<3 ND<3 ND<3 ND<3 <br /> 5 MWS-20 ND<3 ND<3 ND<3 ND<3 <br /> 7 MW5-30 ND<3 ND<3 ND<3 ND<3 <br /> 9 MW5-40 3 ND<3 ND<3 ND<3 <br /> 11 MW5-50 ND<3 ND<3 ND<3 ND<3 <br /> 12 MW5-55 ND<3 ND<3 ND<3 ND<3 <br /> ug/kg - parts per billion (ppb) <br /> Minimum Detection Limit in Soil : 3.Aug/kg <br /> QAQC Summary: <br /> Daily Standard run at 20ug/L: RPD = <15% <br /> MS/MSD Average Recovery = 98% Duplicate RPD = 6% <br /> Richard Srna. Ph.D. <br /> ` Laboratory Di nectar ,. <br /> OUTSTANDING O.UALI TY AND SERVICE <br />