U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 30, 2025

All TitlesTitle 40Chapter IPart 52Subpart J - Subpart J—District of Columbia
§ 52.470 - Identification of plan.
§ 52.471 - Classification of regions.
§ 52.472 - Approval status.
§ 52.473 - [Reserved]
§ 52.474 - Base Year Emissions Inventory.
§ 52.475 - Determinations of attainment.
§ 52.476 - Control strategy: ozone.
§ 52.477 - Control strategy: Particular matter.
§ 52.478 - Rules and Regulations.
§ 52.479 - Source-specific requirements.
§ 52.480 - Photochemical Assessment Monitoring Stations (PAMS) Program.
§§ 52.481-52.483 - §[Reserved]
§ 52.484 - Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides?
§ 52.485 - Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of sulfur dioxide?
§§ 52.486-52.498 - §[Reserved]
§ 52.499 - Significant deterioration of air quality.
§ 52.510 - Small business assistance program.
§ 52.515 - Original identification of plan section.
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