EPA is promulgating significant new use rules (SNURs) under section 5(a)(2) of the Toxic Substances Control Act (TSCA) for six chemical substances which were the subject of premanufacture notices (PMNs) and subject to TSCA section 5(e) consent orders issued by EPA. Today's action requires persons who manufacture, import, or process these substances to notify EPA at least 90 days before commencing the manufacturing or processing of a substance for a use designated by these rules as a significant new use. The required notice will provide EPA with the opportunity to evaluate the intended use, and if necessary, to prohibit or limit that activity before it occurs to prevent any unreasonable risk of injury to human health or the environment.