Whenever the owners of 50% or more of the frontage in any zoning district shall present to the Township Board of Supervisors a petition, duly signed and acknowledged, requesting an amendment, supplement, change, modification or repeal of the regulations prescribed for or of the Zoning Map including such district, it shall be the duty of the Township Board of Supervisors to hold a public hearing thereon and cause notice thereof to be given in the manner prescribed in §
310-28 of this article; provided, however, that the Township Board of Supervisors shall not be required to consider a petition requesting an amendment, supplement, change, modification or repeal of any provision of the Zoning Ordinance or the Zoning Map, or to hold a public hearing thereon, when the requested change is the same or substantially the same as requested and upon which a public hearing has been held within the previous year. Such petition shall set forth the following facts:
A. Signature and address of each petitioner, together with the amount of front footage in any district or part thereof.
B. The petition, if pertaining to the Zoning Map, shall have attached thereto a plot plan of the tract to be affected.