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I <br /> I <br /> 42 Hydrocarbon Impacted Groundwater <br /> I <br /> No detectable petroleum hydrocarbon compounds were detected in any <br /> of the three monitoring wells with the exception of Benzene which was detected <br />' in MW-4 at a concentration of 0 86 ppb The results of the TPH and BTX&E <br /> analyses are summarized in Table 2 <br /> Three halogenated volatile organic compounds were detected in the three <br />' wells sampled These compounds were 1,1-Dichloroethane, 1,2-Dichloroethane <br />' and 1,1-Dichloroethene 1,1-Dichloroethane and 1,2-Dichloroethane have been <br /> detected consistently and 1,1-Dichloroethane has been detected sporadically in <br /> the monitoring wells since October 1993 A tabularized listing of the HVOC's <br /> detected is provided on Table 3 and the laboratory report for the HVOC's is <br /> included in Appendix B <br /> 1 <br />