An appellant or applicant for a variance or other relief before the Zoning Hearing Board, and any other party to the proceedings before the Zoning Hearing Board, including representatives of the Township, a person aggrieved, any protestant or civic group having asserted an interest in the proceedings, may utilize mediation as an aid in completing such proceedings; provided, however, that the Zoning Hearing Board shall not initiate mediation or participate as a mediating party. Mediation shall supplement, not replace, those procedures and the jurisdiction of the Zoning Hearing Board in this article and in the Pennsylvania Municipalities Planning Code.[1] Nothing in this section shall be interpreted as limiting the municipal police powers of the Township or as modifying any principles of substantive law.