Wednesday, April 6, 2011:

April 6, 2011 - EPA will no longer accept paper for Toxic Substances Control Act (TSCA) section 5 Premanufacture and Significant New Use Notifications using the new electronic-PMN (e-PMN) software. All notifiers must submit their new notices and support documents for notices submitted after April 6, 2010 either electronically, via Central Data Exchange (CDX), or on optical disc. Note that optical discs will no longer be accepted next year, after April 6, 2012.

Saturday, March 26, 2011:

Saturday, March 26, 2011 - 8:00 AM to 10:00 AM ET - The CDX Web and Exchange Network may experience intermittent outages due to server maintenance.

Saturday, March 12, 2011:

Saturday, March 12, 2011 - 9:00 AM to Sunday, March 13, 2011 - 5:00 PM ET - Network Maintenance at NCC: The CDX Web and Exchange Network may experience intermittent outages due to network maintenance at the EPA National Computer Center (NCC).

Saturday, January 22, 2011:

Saturday, January 22, 2011 - 4:00 PM to 8:00 PM ET - The CDX Web and Exchange Network may experience intermittent outages due to server maintenance.