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Code of Federal Regulations

Subchapter C

Air Programs

50National Primary and Secondary Ambient Air Quality Standards 51Requirements for Preparation, Adoption, and Submittal of Implementation Plans 52Approval and Promulgation of Implementation Plans 53Ambient Air Monitoring Reference and Equivalent Methods 54Prior Notice of Citizen Suits 55Outer Continental Shelf Air Regulations 56Regional Consistency 57Primary Nonferrous Smelter Orders 58Ambient Air Quality Surveillance 59National Volatile Organic Compound Emission Standards for Consumer and Commercial Products 60Standards of Performance for New Stationary Sources 61National Emission Standards for Hazardous Air Pollutants 62Approval and Promulgation of State Plans for Designated Facilities and Pollutants 63National Emission Standards for Hazardous Air Pollutants for Source Categories 64Compliance Assurance Monitoring 65Consolidated Federal Air Rule 66Assessment and Collection of Noncompliance Penalties by EPA 67EPA Approval of State Noncompliance Penalty Program 68Chemical Accident Prevention Provisions 69Special Exemptions from Requirements of the Clean Air Act 70State Operating Permit Programs 71Federal Operating Permit Programs 72Permits Regulation 73Sulfur Dioxide Allowance System 74Sulfur Dioxide Opt-Ins 75Continuous Emission Monitoring 76Acid Rain Nitrogen Oxides Emission Reduction Program 77Excess Emissions 78Appeal Procedures 79Registration of Fuels and Fuel Additives 80Regulation of Fuels and Fuel Additives 81Designation of Areas for Air Quality Planning Purposes 82Protection of Stratospheric Ozone 83[Reserved]84Phasedown of Hydrofluorocarbons 85Control of Air Pollution from Mobile Sources 86Control of Emissions from New and In-Use Highway Vehicles and Engines 87Control of Air Pollution from Aircraft and Aircraft Engines 88Clean-Fuel Vehicles 89Control of Emissions from New and In-Use Nonroad Compression-Ignition Engines 90Control of Emissions from Nonroad Spark-Ignition Engines at or Below 19 Kilowatts 91Control of Emissions from Marine Spark-Ignition Engines 92Control of Air Pollution from Locomotives and Locomotive Engines 93Determining Conformity of Federal Actions to State or Federal Implementation Plans 94Control of Emissions from Marine Compression-Ignition Engines 95Mandatory Patent Licenses 96NOX Budget Trading Program and CAIR NOX and SO2 Trading Programs for State Implementation Plans 97Federal NOX Budget Trading Program, CAIR NOX and SO2 Trading Programs, CSAPR NOX and SO2 Trading Programs, and Texas SO2 Trading Program 98Mandatory Greenhouse Gas Reporting 99[Reserved]