A recent bulletin from the EPA: Nanoscale Program Approach for Comment which includes the following information:

To ensure stakeholder involvement in the development of the Nanoscale Materials Stewardship Program, EPA has issued Federal Register (FR) notices seeking public comment on a concept paper and other materials connected to this program…

On October 18, 2006, EPA launched a collaborative process and invited stakeholders to participate in the design, development and implementation of a Nanoscale Materials Stewardship Program (NMSP) under TSCA. The release of the July 2007 NMSP concept paper, TSCA Inventory paper, and Information Collection Request for the NMSP for public review and comment are an important part of the collaborative development process. These draft documents are intended to further discussion about the NMSP and will serve as the foundation for establishing the details of the NMSP.

The full release is available here.