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Table 4-2 <br /> Analytical Results for Petroleum Hydrocarbons <br /> DISCO Site Additional Investigation <br /> Groundwater Samples <br /> (Units inµg/L) <br /> Sample ID CPT-10(84') CPT-10(105') CPT-10(1341) EB-3 EB-4 CPT-11(104') CPT-11(104') CPT-11(123') <br /> Du licate <br /> Sampling Date 03/14/2000 03/14/2000 03/14/2000 103/14/2000 03/14/2000 03/17/2000 03/17/2000 03/17/2000 <br /> Dilution <br /> Benzene _ __ _ 0.5 U 0.5 U 0.5 U NT NT 0.5 U 0.5 U 0.5 U <br /> Toluene-- 0.5 U 0.5 U 0.5 U NT NT 0.5 U 0.5 U 0.5 U <br /> thylbenzene 0.5 U 0.5 U 0.5 U NT NT 0.5 U 0.5 U 0.5 U <br /> Ienes(Total 0.5 U 0.5 U 0.5 U NT NT 0.5 U 0.5 U 0.5 U <br /> TPH as Gasoline 50 1 U 50 U 50 Ul NT NT 50 U 50 U 50 U <br /> Dilution 1:20 1:1 1:1 1:20 1:20 1:1 <br /> 1,2-Dibromoethane(EDB) - 0.5_ _U 0.5 U0.5 _ U 0.5 U 0.5 U 0.5 U 0.5 U <br /> 1,2-Dichloroethane(1,2-DCA 71 1.4 0.5 U 0.5 U 11 9.9 0.53 <br /> Dilution is 1:1 la !:l 1:1 I:1 <br /> MTBE -- 5 U 5 U 5 U 5 U U 5 U 5 U 5 U <br /> tert-Butanol 5 U 5 U 5 U 5 U U 5 U 7.8 5 U <br /> Di isoQropyl ether__- - -LO _ -U LO U 10 U 10 U U 10 U 10 <br /> y U 10 U <br /> Bth 1-ten-butl e <br /> ther --_-� 5 U_ 5 U 5 U 5 U U. 5 U 5 U 5 U <br /> 6ert-Am 1 Meth I ether 5 U 5 U 5 U 5 U U 5 U 5 U 5 U <br /> Notes: <br /> U -Compound analyzed for but not detected. The reporting limit is presented to the left of the U. <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 Page 3 of 4 06/26/2000 <br />