Low-level radioactive waste, as defined in the Low-Level Radioactive Waste Disposal Act,¹ generated by any government agency or pursuant to a government contract or license, which was classified by the United States Nuclear Regulatory Commission as low-level radioactive waste as of January 1, 1989, whether or not such waste has been deregulated to below regulatory concern by the United States Nuclear Regulatory Commission or other Federal agency, shall only be disposed of at a waste facility licensed by or operated by or for a Federal Government agency or licensed by a state under an agreement with such an agency, for disposal of radioactive waste. Unless required under Federal law, the Commonwealth does not assume responsibility or ownership over these wastes by retaining jurisdiction over their storage and disposal.