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1 { <br /> E <br /> { <br /> Superior Precision " rnalyrical' Inc. <br /> • Martinez California 94553 • 1510 229-1512 fax )S 3) 2Z-- =25 <br /> r 82S Arnold Drove Suite 1 14 <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. : 85600 DATE RECEIVED: 04/28/92 <br /> CLIENT: Golden West Builders DATE REPORTED: 05/06/92 <br /> CLIENT JOB NO. : NA DATE SAMPLED : 04/27/92 ! <br /> 1 <br /> 0 <br /> ANALYSIS FOR BENZENE, TOLUENE, ETHYL BENZENE & XYLENES <br /> by EPA SW-846 Methods 5030 and 8020 <br /> } <br /> Concentration(ug/kg) <br /> LAB Ethyl <br /> # Sample identification Benzene Toluene Benzene Xylenes <br /> I, P3 5 ' ND< 3 ND<3 ND<3 ND<3 <br /> 2 P3 10 ' ND<3 4 ND<3 6 <br /> 3 P3 15 ' ND<3 ND<3 ND<3 ND<3 <br /> •4 P3 20 ' ND<3 ND<3 ND<3 ND< 3 <br /> 5 P3 25 ' ND<3 ND<3 ND<3 6 <br /> 6 P3 30 ' ND<3 ND<3 ND<3 ND< 3 <br /> 7 P3 35 ' ND< 3 ND<3 ND<3 ND< 3 <br /> 8 P3 40 ' ND<3 ND<3 ND<3 ND<3 <br /> 9 P2 40 ' 4200 14000 17000 66000 <br /> 10 PI 5 ' ND<3 ND<3 ND<3 ND<3 <br /> 11 P1 10 ' ND<3 ND<3 ND<3 ND< 3 <br /> 12 P1 15 ' ND< 3 ND<3 ND<3 ND<3 <br /> 13 P1 20 ' ND<3 12 26 86 <br /> 14 P1 25 ' 5 14 14 32 <br /> 15 P2 5 ' ND<3 ND< 3 ND< 3 ND<3 <br /> 16 P2 10 ' ND<3 ND<3 ND<3 -ND<3 <br /> 17 P2 15 ' ND<3 ND<3 ND<3 ND<3 <br /> 18 P2 20 ' ND<3 64 35 110 <br /> 19 P2 25 , 7500 15000 16000 36000 <br /> 20 P2 30 ' 9800 26000 44000 130000 <br /> 21 P2 35 ' 13000 8500 70000 280000 <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 =96% : Duplicate RPD = <4 <br /> • Richard Srna, Ph•D <br /> Ce,rr,�ea �t;orato-,Lanoratory Director <br />