State Implementation Plans (SIPs)

All Colorado communities are currently in attainment of all National Ambient Air Quality Standards, with the exception of the Front Range ozone control area, which is non-attainment for the 8-hour ozone standard.

• Website with map showing boundaries of all Colorado nonattainment, and attainment/maintenance areas

Below is a list of the plans that show how communities that once violated federal clean air standards have attained and will maintain those standards.

If a plan you are seeking is not listed here, please e-mail us at cdphe.commentsapcd@state.co.us.

• Aspen
  • 2010 PM10 Attainment/Maintenance Plan
  • Area Map
  • 2003 PM10 Attainment/Maintenance Plan
• Cañon City
  • PM10 Attainment/Maintenance Plan
  • Area Map
• Colorado Springs
  • Carbon Monoxide Attainment/Maintenance Plan Revised 2009
  • Area Map
• Denver
  • Carbon Monoxide Attainment/Maintenance Plan
  • Area Map
  • Ozone Attainment/Maintenance Plan Revised 2001
  • Ozone Action Plan 2008
  • Area Map
  • PM10 Attainment/Maintenance Plan
  • Area Map
• Fort Collins
  • 2010 Carbon Monoxide Attainment/Maintenance Plan
  • Area Map
  • 2002 Carbon Monoxide Attainment/Maintenance Plan
• Greeley
  • Carbon Monoxide Attainment/Maintenance Plan Revised 2009
  • Area Map
• Lamar
  • PM10 Attainment/Maintenance Plan
  • Area Map
• Longmont
  • Carbon Monoxide Attainment/Maintenance Plan
  • Area Map
• Pagosa Springs
  • PM10 Attainment/Maintenance Plan Revised 2009
  • Area Map
• Steamboat Springs
  • PM10 Attainment/Maintenance Plan
  • Area Map
• Telluride
  • PM10 Attainment/Maintenance Plan Revised 2009
  • Area Map

Lead Attainment Recommendations
Natural Events Action Plans
Technical Support Documents for Attainment/Maintenance Plans