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PRELIMINARY DRAFT ANALYTICAL RESULTS <br /> Table <br /> Analytical Results for Petroleum Hydrocarbons <br /> DISCO Site Additional Investigation <br /> Groundwater Samples <br /> (Units in pg/[.) <br /> Sample ID CPT-6(861) CPT-6(140') CPT-7(76') CPT-7(126') CPT-8(72') CPT-8(130') EB-2 <br /> Sam lin Date 01/18/2000 01/18/2000 1 01/18/2000 01/18/2000 01/18/2000 1 01/18/2000 01/18/2000 <br /> Dilution 1:5 1:1 1:50 1:1 250 1 1:1 1:1 <br /> Benzene 380 0.5 U 5,500 6.0 4,500 0.87 0.5 U <br /> Toluene _ _ _ 3.1 _ _ 0 5 U 1,900 3.1 590T 0.50 �U 0.5 U <br /> Ethhlbenzene 74 0 5 U 600 0.51 670 0.50 77 77 U 0.5 U <br /> Xylenes(Total) 120 _ 0.5 U 1,400 1.5 940 0.50 U 0.5 U <br /> _— _ --- -- <br /> TPH as Gasoline 2 100 50 U 2Q,000 77 17,000 52 50 U <br /> Dilution 1:5 El 1 1:50 1:1 1:20 1 El <br /> 1,2-Dibmmoethane(EDB) _ 2.5 U __ 0.5 U 25 - U 1 0.5 U 10 U 0.5 U _ NT <br /> 1,2-Dichloroethane(1,2-DCA 430 0.83 1,300 3.5 1,300 3.6 NT <br /> Dilution 1:5 1:200 1:50 1:1 1:20 1:1 <br /> MTBE 25 tU 5 U 250 U 5 U 100 U 5 U NT <br /> tert-Bu[anol 25 U 250 U 5 U 100 U 5 U NTDt isopropyl ether 50 10 U 500 U 10 U 200 U to U NTEthyl-[ert butyl ether25 5 U 250 U _ 5 U__ 100 U__ 5 _ ; U NT <br /> tert-Am I Methyl ether 25 U 5 U 250 U 5 U 100 U 5 U NT <br /> Notes: <br /> U -Compound analyzed for but not detected. The reporting limit is presented to the left of the U. r <br /> Bold values are detections above the analytical reporting limit <br /> ' Results treated as non-detect due to detections in associated equipment blank <br /> "Hydrocarbon reported in gasoline range does not match laboratory gasoline standard <br /> Data.xls 02/03/2000 <br />