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SUPERIOR ANALYTICAL LABORATORY, INC. <br /> 1385 Riwx ST, STE. D. •SAN FRANCISCO, CA 94124 •PHONE (415) 647-2681 <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. : 51447 DATE RECEIVED: 12/08/88 <br /> CLIENT: LeedshilT - Herkenhoff, Inc. DATE REPORTED: 12/17/39 <br /> CLIENT JOB NO. : 9832. 12 <br /> ANALYSIS FOR BENZENE, TOLUENE, ETHYL BENZENE & XYLENES <br /> by EPA SW-846 Methods 5030 and 8020 <br /> ~ Concentration(ug/L)/(ug/kg) <br /> LAB Ethyl <br /> 0 Sample Identification Benzene Toluene Benzene Xylenes <br /> i MW1 P10<0.3 0.4 0.9 1 .8 <br /> 2 MW2 8200 4600 2300 8500 <br /> 3 MW3 2.6 0.56 ND<0.3 0.34 <br /> 4 MW4 3.5 1 .4 0.8 3. 1 <br /> 5 MW5 15000 4500 2100 4800 <br /> fi TRAVEL BLANK ND<0.3 ND<0.3 ND<0.3 ND<0.3 <br /> 7 C1 2.2 3.7 2.7 8. 1 <br /> 8 C2 ND<3.0 7.5 ND<3.0 7.6 <br /> �i 9 C3 ND<3.0 11 ND,,3.0 11 <br /> L� <br /> (ug/L)&(ug/kg)- parts per billion (ppb) <br /> Minimum Detection Limit ill Soil : 3.Oug/kg <br /> �-' Minimum Detection Limit in Water:0.3ug/L <br /> QAQC Summary: <br /> Daily Standard run at 20ug/L: RPD = <15% <br /> MS/MSD Average Recovery = 95%: Duplicate RPD = 5% <br /> Comments: <br /> --:- ---- ------ --- - --. _ - -.....R i chard..-..Srna <br /> Laboratory Di ctor � <br /> OUTSTANDING QUALITYAND SERVICE <br />