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chloroethane can be interpreted as chemical intermediates of trichloroethane. In addition <br /> to trichloroethane,MW-3 also contains the innocuous halocarbon,dichlorodifluoromethane. <br /> This non-flammable compound has been used as a refrigerant,as an aerosol propellant and <br /> as a leak-detecting agent. 'There are no State or EPA Action levels associated with this <br /> substance, and in fact, may very well have been introduced during previous tank tightness <br /> testing procedures. Alternatively, the compound may have originated from a former dairy, <br /> located across North B Street. it is possble that dichlorodifluoromethane was used <br /> - extensively by the diary for the freezing of product-- and/or containers. This second <br /> alternative provides an explanation for the occurrence of the compound in MW-3,the well <br /> �- closest to the former dairy;while not being detected in MN"V-1,the well located immediately <br /> down-gradient from the former waste oil tank. <br /> w <br /> 9 <br /> - 5 i <br /> { 12 <br /> a:. <br /> vd <br />