After submitting a proposed rule concerning nanoscale materials to the Office of Management and Budget (OMB) on October 6, 2014, the U.S. Environmental Protection Agency’s (EPA) Spring 2014 Regulatory Agenda item concerning nanoscale materials has been revised. The Regulatory Agenda item posted online in May 2014 referred to the development of a significant new use rule (SNUR) under Section 5(a)(2) of the Toxic Substances Control Act (TSCA) that would require persons who intend to manufacture, import, or process these chemical substances for an activity that is designated as a significant new use by the proposed rule to notify EPA at least 90 days before commencing that activity. The Regulatory Agenda item now includes no reference to the SNUR, but describes only a proposal to require reporting and recordkeeping under TSCA Section 8(a), which would require that persons who manufacture these nanoscale materials notify EPA of certain information including production volume, methods of manufacture and processing, exposure and release information, and available health and safety data.