(a) Notwithstanding any provision in this article, article four, chapter twenty-two-c, article two, chapter twenty-four of this code, any other section of this code, or any prior enactment of the code to the contrary, and notwithstanding any defects in or challenges to any actions which were or are required to be performed in satisfaction of the following criteria, any person who on October 1, 1991, has:
(1) Obtained site approval for a commercial solid waste facility from a county or regional solid waste authority or county commission pursuant to a prior enactment of this code, or has otherwise satisfied the requirements of subsection (a), section twenty-five, article four, chapter twenty-two-c of this code;