e-GGRT will be unavailable at times between 5:00 AM and 7:00 AM EDT Monday, October 15, 2012 due to system maintenance. If you encounter difficulty logging into e-GGRT during those time please wait 5 minutes and try again.

EPA is experiencing problems with its Central Data Exchange (CDX) network authentication services that may cause intermittent problems with e-GGRT user-login.  If you are unable to log-in to e-GGRT, please try re-loading the page and logging in again.  EPA is working to resolve the problem.

EPA's Office of Environmental Information has completed scheduled maintenance and upgrades on the Agency's Central Data Exchange (CDX) which affected all CDX customers including e-GGRT users.  Access to e-GGRT has been restored. Connectivity may be intermittent during the weekend as CDX runs system checks related to maintenance. For more information and updates on CDX outages please visit http://cdx.epa.gov/recent.asp