The National Academy of Sciences shall conduct a study and provide recommendations for reducing costs associated with decontamination and decommissioning, and shall report its findings to the Congress within 3 years after October 24, 1992. Such report shall include a determination of the decontamination and decommissioning required for each facility, shall identify alternative methods, using different technologies, shall include site-specific surveys of the actual contamination, and shall provide estimated costs of those activities.