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Title 40

Displaying title 40, up to date as of 9/20/2021. Title 40 was last amended 9/20/2021.
There have been changes in the last two weeks to Subchapter C.
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Title 40 Protection of Environment Part / Section
Chapter I Environmental Protection Agency 1 – 1099
Subchapter C Air Programs 50 – 99
Part 50 National Primary and Secondary Ambient Air Quality Standards 50.1 – 50.19
Part 51 Requirements for Preparation, Adoption, and Submittal of Implementation Plans 51.1 – 51.1319
Part 52 Approval and Promulgation of Implementation Plans 52.01 – 52.2999
Part 53 Ambient Air Monitoring Reference and Equivalent Methods 53.1 – 53.66
Part 54 Prior Notice of Citizen Suits 54.1 – 54.3
Part 55 Outer Continental Shelf Air Regulations 55.1 – 55.15
Part 56 Regional Consistency 56.1 – 56.7
Part 57 Primary Nonferrous Smelter Orders 57.101 – 57.816
Part 58 Ambient Air Quality Surveillance 58.1 – 58.61
Part 59 National Volatile Organic Compound Emission Standards for Consumer and Commercial Products 59.1 – 59.699
Part 60 Standards of Performance for New Stationary Sources 60.1 – 60.5805a
Part 61 National Emission Standards for Hazardous Air Pollutants 61.01 – 61.359
Part 62 Approval and Promulgation of State Plans for Designated Facilities and Pollutants 62.01 – 62.16730
Part 63 National Emission Standards for Hazardous Air Pollutants for Source Categories 63.1 – 63.12099
Part 64 Compliance Assurance Monitoring 64.1 – 64.10
Part 65 Consolidated Federal Air Rule 65.1 – 65.169
Part 66 Assessment and Collection of Noncompliance Penalties by EPA 66.1 – 66.95
Part 67 EPA Approval of State Noncompliance Penalty Program 67.1 – 67.43
Part 68 Chemical Accident Prevention Provisions 68.1 – 68.220
Part 69 Special Exemptions from Requirements of the Clean Air Act 69.11 – 69.52
Part 70 State Operating Permit Programs 70.1 – 70.14
Part 71 Federal Operating Permit Programs 71.1 – 71.27
Part 72 Permits Regulation 72.1 – 72.96
Part 73 Sulfur Dioxide Allowance System 73.1 – 73.90
Part 74 Sulfur Dioxide Opt-Ins 74.1 – 74.61
Part 75 Continuous Emission Monitoring 75.1 – 75.75
Part 76 Acid Rain Nitrogen Oxides Emission Reduction Program 76.1 – 76.15
Part 77 Excess Emissions 77.1 – 77.6
Part 78 Appeal Procedures 78.1 – 78.20
Part 79 Registration of Fuels and Fuel Additives 79.1 – 79.68
Part 80 Regulation of Fuels and Fuel Additives 80.1 – 80.1667