3. In the event that any real property owned by the authority is used or is to be used by the authority or a lessee thereof for purposes other than public aviation purposes, the authority, or lessee thereof, as the case may be, shall enter into agreements with any municipality of the state to pay annual sums in lieu of taxes in respect of such real property located in such municipality. For the purposes of this section, such purposes other than public aviation purposes shall include without limitation hotels, motels, restaurants and retail stores and concessions not located within any air terminal building, office buildings to the extent not used by the authority or any other public corporation for its own corporate purposes, and such other buildings and improvements as determined by the authority to be not exclusively for public aviation purposes. The authority shall determine (i) the amount of such annual payments in lieu of taxes, (ii) whether the use of such property is for purposes other than public aviation purposes and (iii) the extent to which such property is used for purposes other than public aviation purposes. In making such determinations the authority shall take into consideration the recommendations, if any, of the county.