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TABLE 2-Continued <br /> GROUND WATER SAMPLE ANALYTICAL RESULTS <br /> Concentrations in micrograms per liter (µg11) <br /> Monitoring Ethyl- Total <br /> Well Date Benzene Toluene benzene Xylenes TPHga <br /> MW-6 02/11/92 0 6 <05 <05 <05 51d <br /> 03/18/92 06 <05 <05 <05 <50' <br /> 06/04/92 <05 <05 <05 <05 <50 <br /> 09/28/92 <05 <05 <05 <05 <50 <br /> 12/18/92 <05 <05 <05 <05 <50 <br /> 04/05/93 <05 <05 <05 <05 90b <br /> 09/23/93 <05 08 <05 15 52 <br /> 11/15/93 <05 <05 <05 <05 <50 <br /> a Total Petroleum Hydrocarbons as gasoline <br /> b Atypical chromatogram with unidentified peak(s) within the range of gasoline hydrocarbons <br /> Chlorinated hydrocarbons are suspected Aground water sample collected from monitoring well MW-6 <br /> on April 17, 1992, contained chlorobenzene and 1,2-dichlorobenzene <br /> c Atypical chromatogram Analysis of this sample by EPA Method 624 on April 17, 1992 (past EPA <br /> recommended holding time), was positive for the following chlorinated hydrocarbons vinylchloride, <br /> cis-l,2-dichlorethene, trichloroethene and tetrachlorethene These peaks resulted in a positive fuel <br /> hydrocarbon result <br /> d Atypical chromatogram Four unknown peaks were observed causing a positive fuel hydrocarbon result <br /> Chlorinated hydrocarbons are suspected <br /> e Atypical chromatogram An unknown peak was observed between MTBE and benzene Chlorinated <br /> hydrocarbons are suspected <br /> e Atypical chromatogram Analysis of this sample by EPA Method 624 on April 17, 1992 (past EPA <br /> recommended holding time) was positive for the following chlorinated hydrocarbons chlorobenzene <br /> and 1,2-dichlorobenzene <br /> • <br /> LRP306 TA <br />