EPA Extends Public Comment Period for Review of Secondary National Ambient Air Quality Standards for Oxides of Nitrogen and Oxides of Sulfur

Summary

The Environmental Protection Agency (EPA) is extending the public comment period for a draft assessment document related to the review of secondary national ambient air quality standards for oxides of nitrogen and oxides of sulfur, originally set to end on April 29, 2010, but now closing on May 13, 2010, to allow for adequate analysis and comment preparation, with a proposal addressing these standards expected to be issued by July 12, 2011.