[Amended 7-9-1999 by Ord. No. 99-1; 8-30-1999]
In case, however, of a protest against such changes, signed by the owners of 20% or more either of the area or lots included in such proposed change, those immediately adjacent thereto extending 200 feet therefrom or those directly opposite thereof, extending 100 feet back from the street frontage of such opposite lots, such amendment shall not become effective except by the favorable vote 3/4 of all the members of the Commissioners of Henlopen Acres after a public hearing.