This subchapter applies to owners or operators required to provide financial assurance under Chapter 336, Subchapters G, H, L, or M of this title (relating to Decommissioning Standards; Licensing Requirements for Near-Surface Land Disposal of Low-Level Radioactive Waste; Licensing of Source Material Recovery and By-Product Material Disposal Facilities; or Licensing of Radioactive Substances Processing and Storage Facilities). This subchapter establishes requirements and mechanisms for demonstrating financial assurance for closure, post closure, corrective action, and liability coverage.