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a <br /> k <br /> SUPERIOR ANALYTICAL LABORATORY, INC. <br /> r- <br /> 1555 BURKE, UNIT SAN FRANCISCO,CA 94124 PHONE (415) 647-2081 <br /> i <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. : 52498 PATE REQUESTED: 09/t7/90 <br /> CLIENT: Leedshill - Herkenhoff, Inc. DATE REPORTED: 09/19/90 <br /> CLIENT JOB NO. : 90819. 12 <br /> B <br /> ANALYSIS FOR &!�NZENE, TOLUENE, ETHYL BENZENE XYLENES <br /> by EPA SW-8x16 Methods 5030 and 8020 <br /> Concentration(ug/kg) <br /> LAS Ethyl <br /> - # Sample Identification Benzene Toluene Benzene Xylenes <br /> SB3-15 ND<150 43000 31000 250000 <br /> 2 583--25 ND30 120 ego 2900 <br /> SO4-15 10 170 35 270 s . <br /> 4 S84-25 16 7 13 ®5 <br /> E 5 SBS-15 7 ND<3 f.'D<3 8 <br /> $ S88-25 ND<3 5 3 4 <br /> - <br /> %r ug/kg - parts ver billion (Ppb) <br /> 1 Minimum Detection limit in Soil : 3.Oug/kg <br /> QAQC Summary: i <br /> Daily Standard run at 20ug/L: RPD = <15% <br /> MS/MSD Average Recovery = 141N Duplicate RPD = <2% <br /> ` Ric rd., Srn2., Ph. <br /> Laboratory D' ector <br /> f { . <br /> i <br /> �.1 f <br /> OWSTANDING QUALITY AND SERVICE <br /> s <br />