U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 30, 2025

All TitlesTitle 40Chapter IPart 52Subpart B - Subpart B—Alabama
§ 52.49 - [Reserved]
§ 52.50 - Identification of plan.
§ 52.51 - Classification of regions.
§ 52.53 - Approval status.
§ 52.54 - Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides?
§ 52.55 - Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of sulfur dioxide?
§ 52.56 - Control strategy: Ozone.
§ 52.57 - Control strategy: Sulfur oxides.
§ 52.58 - Control strategy: Lead.
§ 52.60 - Significant deterioration of air quality.
§ 52.61 - [Reserved]
§ 52.62 - Control strategy: Sulfur oxides and particulate matter.
§ 52.63 - PM10 State Implementation Plan development in group II areas.
§ 52.64 - Determination of attainment.
§ 52.65 - Control Strategy: Nitrogen oxides.
§ 52.66 - [Reserved]
§ 52.69 - Original identification of plan section.
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