A public hearing is being held tonight in Danbury about the potential sale of a City owned property.  Danbury is looking to put 33 East Franklin Street and 72 through 80 Maple Avenue out to bid.  The hearing is at 7pm in Council Chambers in City Hall. The former Amphenol site is contaminated with arsenic, mercury and traces of chemical production and cannot be used for residential or recreational purposes.  The City Council declared it surplus in September, allowing officials to put out a request for proposals.  Any final agreement of sale must be returned to the City Council for final authorization.