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.
 
 
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
 
Cañon City
 
Colorado Springs
 
Denver
 
Fort Collins
 
Greeley
 
Lamar
 
Longmont
 
Pagosa Springs
 
Steamboat Springs
 
Telluride
 
If a plan you’re seeking isn’t listed here, please e-mail us:
 
 
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