State Implementation Plans (SIPs)
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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