Any regional operating or policy committee established to oversee or supervise the operations of any resources recovery facility, or a majority of the chief elected officials of the municipalities which are served by such facility, may require the performance of an independent management audit on all or any portion of the operating procedures, business decisions, management practices and any other internal workings of such facility which affect the costs paid by such municipalities for the services provided by the facility. Any such audit shall be conducted by an independent management consulting firm and all reasonable and proper expenses of the audit shall be borne by the municipalities served by the facility. The results of any such audit shall be filed with the Department of Energy and Environmental Protection and shall be open to public inspection.