Raleigh-Durham-Chapel Hill, NC 8-hour Ozone Map

"This map shows the boundaries of the designated Raleigh-Durham-Chapel Hill, NC 8-hour ozone nonattainment area. It includes the boundaries of associated 1-hour ozone nonattainment and/or maintenance areas, as well as any associated MPOs. The map is intended to depict the extent of 8-hour ozone nonattainment in this area, and how the boundaries of the 8-hour area, 1-hour area, and the MPO planning area relate to each other."

• Raleigh-Durham-Chapel Hill, NC 8-hour Ozone Nonattainment Area
  • NORTH CAROLINA
    • Chatham Co (P)
    • Durham Co
    • Franklin Co
    • Granville Co
    • Johnston Co
    • Orange Co
    • Person Co
    • Wake Co
• Raleigh-Durham, NC 1-hour Ozone Maintenance Area
  • NORTH CAROLINA
    • Durham Co
    • Granville Co (P)
    • Wake Co
• Capital Area MPO
  • Wake Co
• Durham-Chapel Hill-Carrboro MPO
  • Chatham Co (P)
  • Durham Co
  • Orange Co (P)
• Burlington-Graham MPO
  • Alamance Co (P)
  • Guildford Co (P)
  • Orange Co (P)