An official website of the United States government.

Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Federal Register Notices for Proposed Acute Exposure Guideline Levels (AEGLs)

This page provides Federal Register notices requesting public comment on proposed Acute Exposure Guideline Levels (AEGL) values.

October 30, 1997
March 15, 2000
June 23, 2000
December 13, 2000
May 2, 2001
February 15, 2002
July 18, 2003
September 7, 2004
October 12, 2006
September 19, 2007
April 16, 2008
August 19, 2009
July 28, 2010