"This map shows the boundaries of the designated Parkersburg-Marietta, WV-OH PM2.5 nonattainment area. It includes the boundaries of associated 8-hour ozone nonattainment areas, as well as any associated MPOs. The map is intended to depict the extent of PM2.5 nonattainment in this area, and how the boundaries of the PM2.5 area, 8-hour area, and the MPO planning area relate to each other."
- Parkersburg-Marietta, WV-OH PM2.5 Nonattainment Area
- OHIO
- Washington Co
- WEST VIRGINIA
- Pleasants Co (P)
- Wood Co
- OHIO
- Parkersburg-Marietta, WV-OH 8-hour Ozone Nonattainment Area
- OHIO
- Washington Co
- WEST VIRGINIA
- Wood Co
- OHIO
- Wood-Washington-Wirt Interstate Planning Commission
- OHIO
- Washington Co (P)
- WEST VIRGINIA
- Wood Co
- OHIO
