All Colorado communities are currently in attainment of all National Ambient Air Quality Standards except the Front Range ozone control area, which is nonattainment for the eight-hour ozone standard.
Map of nonattainment and attainment/maintenance areas.
State Implementation Plans
The plans linked below show how communities that once violated federal clean air standards have attained and will maintain those standards.
Aspen
- 2010 PM10 Attainment / Maintenance Plan AQCC effective date 12/16/2010. EPA effective date 11/18/2013.
Cañon City
- PM10 Attainment / Maintenance Plan. AQCC effective date 11/20/2008. EPA effective date 9/9/2013.
Colorado Springs
- Carbon Monoxide Attainment / Maintenance Plan Revised 2009 AQCC effective date 12/17/2009. EPA effective date 9/30/2013.
Denver
- Carbon Monoxide Attainment / Maintenance Plan AQCC effective date 12/15/2005. EPA effective date 8/17/2007.
- Ozone Attainment / Maintenance Plan Revised 2001 AQCC effective date 1/11/2001. EPA effective date 10/11/2001.
- Ozone Action Plan 2008 AQCC effective date 12/12/2008. EPA effective date 7/21/2010.
- PM10 Attainment / Maintenance Plan AQCC effective date 12/15/2005. EPA effective date 11/6/2007.
Fort Collins
- 2010 Carbon Monoxide Attainment/Maintenance Plan AQCC effective date 12/16/2010. EPA effective date 11/12/2013.
Greeley
- Carbon Monoxide Attainment/Maintenance Plan Revised 2009 AQCC effective date 12/17/2009. EPA effective date 10/1/2013.
Lamar
- PM10 Attainment/Maintenance Plan (Revised 2012) AQCC effective date 12/20/2012 . EPA effective date 10/14/2016.
Longmont
- Carbon Monoxide Attainment/Maintenance Plan AQCC effective date 12/15/2005. EPA effective date 8/17/2007.
Pagosa Springs
- PM10 Attainment/Maintenance Plan Revised 2009 AQCC effective date 11/19/2009. EPA effective date 4/9/2014.
Steamboat Springs
- PM10 Attainment/Maintenance Plan AQCC effective date 1/30/2012. EPA effective date 3/23/2015.
Telluride
- PM10 Attainment/Maintenance Plan Revised 2009 AQCC effective date 11/19/2009. EPA effective date 3/13/2014.
If a plan you’re seeking isn’t listed here, please e-mail us:
cdphe.commentsapcd@state.co.us.
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