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811 f Superior Precision na6otical, Inc. <br /> 87',A rrcrlcl L)rrvt' SLWC 114 94`-51 (5 10) 229 1512/ fax 10) /19-15?6 <br /> C S R T I F T C A T f o f A N A L Y S I S <br /> LABORATORY NO. : 83878 DATE RECEIVED: 09/06/91 <br /> CLICNT • Parker~ Environmental Services DATE REPORTED. 09/13/91 <br /> CLIENT JOB NO. : 113-13 DATE SAMPLED : 09/06/91 <br /> ANALYSIS FOR BENZENE , TOLUENE , ETHYL BENZENE & XYLENES <br /> by EPA SW-846 Methods 5030 and 8020 <br /> Goncentrat1on(ug/Kq) <br /> LAB Ethyl <br /> 0 Sample Identification Benzene Toluene Benzene Xylenes <br /> 1 B-1-6 NDt3 ND<3 ND« ND<3 <br /> 2 B-1 - 11 ND<3 ND<3 ND<3 ND<3 <br /> 3 8-1- 16 ND<3 ND<3 ND<3 ND 0 <br /> 4 8- 1 -21 ND<3 ND« ND<3 ND<3 <br /> 5 0- 1-26 ND<3 ND<3 ND<3 ND<3 <br /> 6 B-1-29 ND<3 ND<3 ND<3 ND<3 <br /> ug/Kg - parts per billion (ppb) <br /> Method Detection Limit 7n $oil - 3 ug/Kg <br /> OAQC Summary: <br /> Daily Standard run at 20ug/L RPG = < 15% <br /> MS/MSD Average Recovery = 9856: Duplicate RPD = <3 <br /> i <br /> Richard Sr a, Ph. D. <br /> laboratory Director <br /> 2 <br /> �[iilfr[ t�UrrfvlK 5 <br /> 'r <br />