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40 CFR, Chapter I-Environmental Protection Agency,
Subchapter C-Air Programs

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  • Part 50 - National Primary and Secondary Ambient Air Quality Standards
  • Part 51 - Requirements for Preparation, Adoption, and Submittal of Implementation Plans
  • Part 52 - Approval and Promulgation of Implementation Plans
  • Part 53 - Ambient Air Monitoring Reference and Equivalent Methods
  • Part 54 - Prior Notice of Citizen Suits
  • Part 55 - Outer Continental Shelf Air Regulations
  • Part 56 - Regional Consistency
  • Part 57 - Primary Nonferrous Smelter Orders
  • Part 58 - Ambient Air Quality Surveillance
  • Part 59 - National Volatile Organic Compound Emission Standards for Consumer and Commercial Products
  • Part 60 - Standards of Performance for New Stationary Sources
  • Part 61 - National Emission Standards for Hazardous Air Pollutants
  • Part 62 - Approval and Promulgation of State Plans for Designated Facilities and Pollutants
  • Part 63 - National Emission Standards for Hazardous Air Pollutants for Source Categories
  • Part 64 - Compliance Assurance Monitoring
  • Part 65 - Consolidated Federal Air Rule
  • Part 66 - Assessment and Collection of Noncompliance Penalties by EPA
  • Part 67 - EPA Approval of State Noncompliance Penalty Program
  • Part 68 - Chemical Accident Prevention Provisions
  • Part 69 - Special Exemptions From Requirements of the Clean Air Act
  • Part 70 - State Operating Permit Programs
  • Part 71 - Federal Operating Permit Programs
  • Part 72 - Permits Regulation
  • Part 73 - Sulphur Dioxide Allowance System
  • Part 74 - Sulfur Dioxide Opt-Ins
  • Part 75 - Continuous Emission Monitoring
  • Part 76 - Acid Rain Nitrogen Oxides Emission Reduction Program
  • Part 77 - Excess Emissions
  • Part 78 - Appeal Procedures for Acid Rain Program
  • Part 79 - Registration of Fuels and Fuel Additives
  • Part 80 - Regulation of Fuels and Fuel Additives
  • Part 81 - Designation of Areas for Air Quality Planning Purposes
  • Part 82 - Protection of Stratospheric Ozone
  • Part 85 - Control of Air Pollution From Mobile Sources
  • Part 86 - Control of Emissions From New and In-Use Highway Vehicles and Engines
  • Part 87 - Control of Air Pollution From Aircraft and Aircraft Engines
  • Part 88 - Clean-Fuel Vehicles
  • Part 89 - Control of Emissions From New and In-Use Nonroad Compression-Ignition Engines
  • Part 90 - Control of Emissions From Nonroad Spark-Ignition Engines
  • Part 91 - Control of Emissions From Marine Spark-Ignition Engines
  • Part 92 - Control of Air Pollution From Locomotives and Locomotive Engines
  • Part 93 - Determining Conformity of Federal Actions to State or Federal Implementation Plans
  • Part 94 - Control of Air Pollution From Marine Compression-Ignition Engines
  • Part 95 - Mandatory Patent Licenses
  • Part 96 - NOx Budget Trading Program for State Implementation Plans
  • Part 97 - Federal NOx Budget Trading Program