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Superior precision Analytical, Inc. <br /> ^ 825 Arnold Drive Suite 1 14 • Martinez California 94553 - 15 10) 229-1512 / fax (5 10) 229-1526 <br /> r'... <br /> C E R T I F I C A T E O F A N A L Y S -I S �TT,i <br /> L + ' <br /> LABORATORY NO. 83939 DATE RECEIVED /-09/1`7/91 <br /> CLIENT GROUNDWATER TECHNOLOGIES INC. DATE REPORTED: 09/19/91 <br /> CLIENT JOB NO. 020301211 <br /> ANALYSIS FOR BENZENE , TOLUENE , ETHYL BENZENE & XYLENES <br /> by EPA SW-846 Methods 5030 and 8020 <br /> Concentratzon(ug/Kg) <br /> LAB Ethyl <br /> 0 Sample Identification Benzene Toluene Benzene Xylenes <br /> 1 T1E-11 . 5 ND<3 ND<3 ND<3 ND<3 <br /> 2 T3E-13 ND<3 ND<3 ND<3 ND<3 <br /> 3 T2E-13. 5 ND<3 ND<3 ND<3 ND<3 <br /> 4 T2W-13 ND<3 ND<3 ND<3 ND<3 <br /> 5 T3W-13. 10 ND<3 ND<3 ND<3 ND<3 <br /> 6 T1W-13. 5 ND<3 ND<3 ND<3 ND<3 <br /> ug/Kg - parts per billion (ppb) <br /> Method Detection Limit in Soil 3 ug/Kg <br /> QAQC Summary <br /> Daily Standard run at 20ug/L: RPD = < 15% <br /> MS/MSD Average Recovery =95% Duplicate RPD = <4 <br /> Richard Srna, Ph. D. <br /> U),- <br /> Laboratory Director <br /> Certified Laboratories ' <br />