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a_ = <br /> a <br /> r- <br />-n <br /> SUPERIOR ANALYTICAL LABORATORY, INC. <br /> � <br /> 1555 6uHxe, Unr:rl•SAN <br /> �gt FRANCISCO, C% 94124 • PmomE(415)647-2081 <br /> _ <br /> C E R T I F -1 C A T S O F A N A L Y sFAN <br /> r s <br /> ± # LABORATORY NO. : 52576 <br /> DATE RECEIVEr . 10/02/90 <br /> CLIENT: Leedshi77 - Herkenhoff, Inc. DATE RePORTFIF: 10/03/90 <br /> CLIENT JOB NO, : 9o8i9. 12 <br /> - :� ANALYSIS FOR BENZENE, TOLUENE.- <br /> ':'L BENZENE x XYLENES <br /> by EPA SW-846 Methods 5030 and 8020 <br /> LAB Concentration(.up/L) <br /> 0 Semple IdentificationEthyl <br /> Benzene Toluene Benzene Xylenes , <br /> ,f '--- -------------_------- ------" ------ - ------- - <br /> I MW-1 Q.5 1 <br /> 3 MW-2 3 7 ND<0.3 1 <br /> 5 NW-3 100 1 4 18 <br /> 26 <br /> 60 <br /> u9/L - parts per billion (ppb) <br /> �.� <br /> Minimum.Detection Limit in Water:0.3uQ/L <br /> QAQC Summary: <br /> Daily 5taqdard run at. 20ug/L: %DIFF <br /> f!S/MSD Average Recovery = 104% Duplicate RPD <br /> Richard Srna, Ph.D, <br /> Labnra ory-Director <br /> - <br /> 0UT TAA(DING 0UALITYAND SERVICE <br />