On March 15, 2017, the U.S. Environmental Protection Agency (EPA) announced it would be extending the comment period on the Toxic Substances Control Act (TSCA) Inventory Notification (Active-Inactive) proposed rule issued on January 13, 2017. The comment date has been extended to March 24, 2017, from March 14, 2017. While it is not entirely clear what prompted the extension, some may find the additional time useful. EPA is accepting comments in Docket ID EPA-HQ-OPPT-2016-0426 on the www.regulations.gov website. More information on this proposed rule is available in our memorandum EPA Proposes Requirements for TSCA Inventory Notification (Active-Inactive).