Subpart MM. Subpart MM—Oregon
- § 52.1970 - Identification of plan.
- § 52.1971 - Classification of regions.
- § 52.1972 - Approval status.
- § 52.1973 - [Reserved]
- § 52.1974 - Original identification of plan section.
- §§ 52.1975-52.1986 - §[Reserved]
- § 52.1987 - Significant deterioration of air quality.
- § 52.1988 - Air contaminant discharge permits.
- §§ 52.1989-52.2019 - §[Reserved]