Jump to main content.


Nitrogen Dioxide (NO2) and Sulfur Dioxide (SO2) Secondary Standards -
Documents from Review Completed in 2012 -
FR Notices

Information provided for informational purposes only Note: EPA no longer updates this information, but it may be useful for historical purposes. See the SO2 and NO2 Secondary Standards Home Page for documents from the current review of the SO2 and NO2 Secondary NAAQS.

From the listing below, find the file you would like to download. The document may be available in one or more file formats, as represented by the icons on the righthand side of the listing. Click on the icon that represents the format you wish to receive. For details on TTNWeb's file type icons, standard file formats, and how to use them, see the TTNWeb File Types page.

Rulemaking Notices / Public Hearings

Review of Secondary National Ambient Air Quality Standards for Oxides of Nitrogen and Sulfur - Final Rule 04/03/2012 PDF file
1.9 MB
Extension of Public Comment Period on the Proposed Revisions to the Secondary NAAQS for Oxides of Nitrogen and Sulfur 9/27/2011 PDF file
143 KB
Announcement of Public Hearing on Proposed Revisions to Secondary NAAQS for Oxides of Nitrogen and Sulfur 8/8/2011 PDF file
179 KB
Proposed Revisions to Secondary National Ambient Air Quality Standards for Oxides of Nitrogen and Sulfur 8/1/2011 PDF file
2.2 MB

Pre-Rulemaking Documents / Availability and Opportunities for Public Comment

Extension of Public Comment Period on the Proposed Revisions to the Secondary NAAQS for Oxides of Nitrogen and Sulfur 9/27/2011 PDF file
143 KB
Notification of Availability for Policy Assessment for the Review of the Secondary NAAQS for Oxides of Nitrogen and Sulfur (January 14, 2011 version) 1/26/2011 PDF file
182 KB
Notice of Availability and Public Comment Period for Policy Assessment for the Review of the Secondary NAAQS for Oxides of Nitrogen and Oxides of Sulfur: Second External Review Draft 09/21/2010 PDF file
155 KB
Notice of Extension of Public Comment Period - First Draft Policy Assessment 04/20/2010 PDF file
177 KB
Notice of Availability and Public Comment Period for Policy Assessment for the Review of the Secondary NAAQS for Oxides of Nitrogen and Oxides of Sulfur: First External Review Draft 03/12/2010 PDF file
52 KB
Notice of Extension of Public Comment Periods for Second External Review Draft Integrated Science Assessment and First External Review Draft Risk and Exposure Assessment 09/29/2008 PDF file
71 KB
Notice of Availability: Risk and Exposure Assessment to Support the Review of the Secondary NAAQS for Oxides of Nitrogen and Oxides of Sulfur - First Draft 08/29/2008 PDF file
89 KB
Review of Draft Integrated Science Assessment for Oxides of Nitrogen and Sulfur - Environmental Criteria: First External Review Draft: Notice of Public Comment Period

12/21/2007

PDF file
80 KB
Integrated Science Assessment for SOx: Call for Information 05/15/2006 PDF file
80 KB
Integrated Science Assessment for NOx: Call for Information 12/09/2005 PDF file
54 KB

Public Meetings / Workshops

Notification of CASAC Teleconference - May 12, 2011 3/25/2011 PDF file
154 KB
Notification of CASAC Meeting February 15-16, 2011 1/24/2011 PDF file
149 KB
Notification of CASAC Teleconferences November 9-10, 2010 and December 6, 2010 10/25/2010 PDF file
151 KB
Notification of CASAC meeting - October 6 and 7, 2010 09/09/2010 PDF file
145 KB
Notification of CASAC meeting April 1-2, 2010 and CASAC teleconference May 3, 2010 03/08/2010 PDF file
144 KB
Notification of CASAC meeting July 22-23, 2009 and CASAC teleconference August 20, 2009 06/23/2009 PDF file
71 KB
Notification of CASAC Teleconference December 19, 2008 12/01/2008 PDF file
73 KB
Notification of CASAC Teleconference November 19, 2008 11/05/2008 PDF file
65 KB
Notification of CASAC meeting October 1 and 2, 2008 09/15/2008 PDF file
73 KB
Oxides of Nitrogen and Sulfur (NOx/SOx) Secondary National Ambient Air Quality Standards (NAAQS) Workshop 06/20/2007 PDF file
53 KB

File Utilities


Local Navigation


Jump to main content.