General. The purpose of the Noise Impact Overlay District is to provide a means by which the public and owners of property within the overlay district can be advised that unusually high levels of aircraft, railroad and/or traffic noise are to be expected on properties in such a district, and that such levels of sound reasonably require that special construction standards involving sound insulation hereinafter set forth be met on all new residential construction in such a district. (Ord. M-3643, 01/26/2004)