Document Archives State Implementation Plans (SIP)

The SIP Planning Process and Colorado SIP Summaries

The Regional Air Quality Council has created a document, The SIP Planning Process and Colorado SIP Summaries, to provide an overview of the Clean Air Act’s (CAA) Requirements for state implementation plan development and approval for the Denver Metro Area (DMA), as well as a historical summary of the Colorado SIPs by pollutant.  To view full versions of the SIPs, select the pollutant from the drop down menu above.

Contact Misty Howell if you are unable to find a SIP.

RAQC Comments on EPA’s proposed 2015 NAAQS Implementation Rule

 

The Regional Air Quality Council comments on EPA’s proposed  2015 Ozone National Ambient Air Quality Standard Implementation Rule.

Comment Letter, February 13, 2017

Moderate Area 2008 8-Hour Ozone Standard State Implementation Plan

 

Technical Support Documents for the Moderate Area 2008 8-Hour Ozone Standard State Implementation Plan

Technical Support Documents Supporting the Denver Metro/North Front Range Moderate Area 2008 8-Hour Ozone Standard State Implementation Plan

Emissions Inventory Development

Photochemical Grid Modeling

Weight of Evidence (WOE) Analyses

Other

 

EPA publishes the Implementation Rule for the 2015 Ozone NAAQS

Final Proposed Moderate Area 2008 8-Hour Ozone Standard SIP as submitted to Air Quality Control Commission

 

2008 8-Hour Ozone Standard SIP Public Comments Public Comment Received by June 27, 2016

Public Comment Received by June 27, 2016

Final Proposed Moderate Area 2008 8-Hour Ozone Standard SIP

Final Proposed Moderate Area 2008 8-Hour Ozone Standard SIP for discussion  and approval by the RAQC Board at the June 30, 2016 meeting.

Public comment is welcome.  Please submit written comments to SIPComments@raqc.org by 12:00 pm MDT on June 27, 2016 to have comments included to the RAQC Board for their consideration at the June 30, 2016 meeting.  Written comments will be posted on the Public Comment Page after June 27.   Oral comments will be taken during the June 30, 2016 meeting (see Public Input Plan for more detail).

The entire document is available through the link above; however each chapter is also available separately as proposed in the full document.

 Public Comment Received by June 27, 2016

Written Public Comment Received at the  June 30, 2016 Board Meeting

2008 8-Hour Ozone Standard SIP Public Comments

Public Comment Received by May 31, 2016

DRAFT Proposed 2008 8-Hour Ozone Standard SIP

DRAFT Proposed 2008 8-Hour Ozone Standard SIP (4.7MB), for discussion by the RAQC Board at the June 3, 2016 meeting.

Public comment is welcome.  Please submit written comments to SIPComments@raqc.org by 12:00 pm MST on May 31, 2016 to have comments included to the RAQC Board for their consideration at the June 3, 2016 meeting.  Written comments will be posted on the Public Comment Page after May 31.   Oral comments will be taken during the June 3, 2016 meeting (see Public Input Plan for more detail).

The entire document is available through the link above; however each chapter is also available separately as proposed in the full document.

Public Comment Received by May 31, 2016

Written Public Comment Received at the June 3, 2016 Board Meeting

 

EPA Takes Final Action on Marginal Areas under 2008 Ozone NAAQS

  • EPA publishes the Final Action on Marginal Areas under the 2009 Ozone NAAQS: Determinations of Attainment by the Attainment Date, and Reclassification of Several Areas for the 2008 Ozone National Ambient Air Quality Standards in the Federal Register Vol. 81, No. 86, May 4, 2016.

EPA publishes the Proposed Rule for Determinations for the 2008 Ozone NAAQS

  • EPA publishes the Proposed Rule for Determinations of Attainment by the Attainment Date, Extensions of the Attainment Date and Reclassification of Several Areas Classified as Marginal for the 2008 Ozone National Ambient Air Quality Standards  in the Federal Register Vol. 78 ,  Number 166,  August 27, 2015
  • The Denver Metro/North Front Range area is proposed to be reclassified from Marginal to Moderate nonattainment and will have a deadline to submit a State Implementation Plan (SIP)  sometime between January 2017 and March 2017.

Ozone Action Plan and State Implementation Plan 2008

Interstate Transport SIP – Regulation

PM-10 Maintenance Plan (Revised) – 2005

Carbon Monoxide Maintenance Plan (Revised) – 2005

PM-10 Maintenance Plan

Carbon Monoxide Maintenance Plan (Revised) – 2003

  • EPA published the Final Rule and the Proposed Rule for the approval of the Carbon Monoxide Revised Maintenance Plan and Redesignation  Request (using Mobile 6.2) for the Metropolitan Denver area  in the Federal Register 69 FR 55752  and 69 FR 55790, respectively, September 16, 2004. The Direct Final Rule will become Federally-effective on November 15, 2004.
  • Carbon Monoxide Maintenance Plan Approved by the AQCC on June 19, 2003 

Early Action Compact: Ozone Action Plan

Carbon Monoxide Maintenance Plan

 

Ozone Redesignation Request and Maintenance Plan