EPA is amending the Toxic Substances Control Act (TSCA) section 8(a) Inventory Update Reporting (IUR) regulations by suspending the next IUR submission period. The IUR requires manufacturers (including importers) of certain chemical substances included on the TSCA Chemical Substance Inventory (TSCA Inventory) to report current data on the manufacturing, processing, and use of the chemical substances. In the Federal Register of August 13, 2010, EPA published proposed modifications to the IUR regulations. EPA is suspending the next submission period to allow additional time to finalize the proposed modifications to the IUR regulations, and to avoid finalizing changes to the reporting requirements in the midst of the 2011 submission period. EPA expects to finalize, in the near future, changes to the IUR reporting requirements which will supersede this action.