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Regulations last checked for updates: May 14, 2025
Title 40 - Protection of Environment last revised: Apr 14, 2028
All Titles
Title 40
Chapter I
Part 52
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]
authority:
42 U.S.C. 7401
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