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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

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:

cdphe.commentsapcd@state.co.us.

More information