U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 52Subpart I - Subpart I—Delaware
§ 52.420 - Identification of plan.
§ 52.421 - Classification of regions.
§ 52.422 - Approval status.
§ 52.423 - Base year emissions inventory.
§ 52.424 - Conditional approval.
§ 52.425 - Determinations of attainment.
§ 52.426 - Control strategy plans for attainment and rate-of-progress: ozone.
§ 52.427 - Control strategy: Particulate matter.
§§ 52.428-52.429 - §[Reserved]
§ 52.430 - Photochemical Assessment Monitoring Stations (PAMS) Program.
§ 52.431 - [Reserved]
§ 52.432 - Significant deterioration of air quality.
§ 52.433 - Nonattainment new source review.
§ 52.440 - Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides?
§ 52.441 - Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of sulfur dioxide?
§ 52.460 - Small business stationary source technical and environmental compliance assistance program.
§ 52.465 - Original identification of plan section.
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