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