An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Clean Air Act Overview

Contact Us

Clean Air Act Title I - Air Pollution Prevention and Control, Parts A through D

This page has links to Clean Air Act sections that are part of the U.S. Code Collection maintained by the U. S. Government Publishing Office. EPA does not control the content of that website. Exit

Part A - Air Quality and Emission Limitations 

Clean Air Act Section U.S. Code Title
101 7401
102 7402 Cooperative activities 
103 7403 Research, investigation, training, and other activities
104 7404 Research relating to fuels and vehicles
105 7405 Grants for support of air pollution planning and control programs
106 7406 Interstate air quality agencies; program cost limitations
107 7407 Air quality control regions
108 7408 Air quality criteria and control techniques
109 7409 National primary and secondary ambient air quality standards
110 7410 State implementation plans for national primary and secondary ambient air quality standards
111 7411 Standards of performance for new stationary sources
112 7412 Hazardous air pollutants
113 7413 Federal enforcement
114 7414 Recordkeeping, inspections, monitoring, and entry
115 7415 International air pollution
116 7416 Retention of State authority
117 7417 Advisory committees
118 7418 Control of pollution from Federal facilities
119 7419 Primary nonferrous smelter orders
120 7420 Noncompliance penalty
121 7421 Consultation
122 7422 Listing of certain unregulated pollutants
123 7423 Stack heights
124 7424 Assurance of adequacy of State plans
125 7425 Measures to prevent economic disruption or unemployment
126 7426 Interstate pollution abatement
127 7427 Public notification
128 7428 State boards
129 7429 Solid waste combustion
130 7430 Emission factors
131 7431 Land use authority

Top of Page

Part B - Ozone Protection

The 1990 Amendments of the Clean Air Act repealed Part B and replaced it with Title VI - Stratospheric Ozone Protection.

Top of Page

Part C - Prevention of Significant Deterioration of Air Quality

Subpart Clean Air Act Section U.S. Code Title
1 - Clean Air 160 7470 Purposes
1 - Clean Air 161 7471 Plan requirements
1 - Clean Air 162 7472 Initial classifications
1 - Clean Air 163 7473 Increments and ceilings
1 - Clean Air 164 7474 Area redesignation
1 - Clean Air 165 7475 Preconstruction requirements
1 - Clean Air 166 7476 Other pollutants
1 - Clean Air 167 7477 Enforcement
1 - Clean Air 168 7478 Period before plan approval
1 - Clean Air 169 7479 Definitions
2 - Visibility Protection 169A 7491 Visibility protection for Federal class I areas
2 - Visibility Protection 169B 7492 Visibility

Top of Page

Part D - Plan Requirements for Nonattainment Areas

Subpart Clean Air Act Section U.S. Code Title
1 - Nonattainment areas in general 171 7501 Definitions
1 - Nonattainment areas in general 172 7502 Nonattainment plan provisions
1 - Nonattainment areas in general 173 7503 Permit requirements
1 - Nonattainment areas in general 174 7504 Planning procedures
1 - Nonattainment areas in general 175 7505 Environmental Protection Agency grants.
1 - Nonattainment areas in general 175A 7505a Maintenance Plans
1 - Nonattainment areas in general 176 7506 Limitation on certain Federal assistance
1 - Nonattainment areas in general 176A 7506a Interstate transport commissions
1 - Nonattainment areas in general 177 7507 New motor vehicle emission standards in nonattainment areas
1 - Nonattainment areas in general 178 7508 Guidance documents
1 - Nonattainment areas in general 179 7509 Sanctions and consequences of failure to attain
1 - Nonattainment areas in general 179B 7509a International border areas
2 - Additional provisions for ozone nonattainment areas 181 7511 Classifications and attainment dates
2 - Additional provisions for ozone nonattainment areas 182 7511a Plan submissions and requirements
2 - Additional provisions for ozone nonattainment areas 183 7511b Federal ozone measures
2 - Additional provisions for ozone nonattainment areas 184 7511c Control of interstate ozone air pollution
2 - Additional provisions for ozone nonattainment areas 185 7511d Enforcement for Severe and Extreme ozone nonattainment areas for failure to attain
2 - Additional provisions for ozone nonattainment areas 185A 7511e Transitional areas
2 - Additional provisions for ozone nonattainment areas 185B 7511f NOx and VOC study
3 - Additional provisions for carbon monoxide nonattainment areas  186 7512 Classification and attainment dates
3 - Additional provisions for carbon monoxide nonattainment areas 187 7512a Plan submissions and requirements
4 -Additional provisions for particulate matter nonattainment 188 7513 Classification and attainment dates
4 -Additional provisions for particulate matter nonattainment 189 7513a Plan provisions and schedules for plan submissions
4 -Additional provisions for particulate matter nonattainment 190 7513b Issuance of RACM and BACM guidance
5 - Additional provisions for designated nonattainment for sulfur oxides, nitrogen dioxide, or lead 191 7514 Plan submission deadlines
5 - Additional provisions for designated nonattainment for sulfur oxides, nitrogen dioxide, or lead 192 7514a Attainment dates
6 - Savings provisions 193 7515 General savings clause

Top of Page

<Clean Air Act Table of Contents by Title>

Contact Us to ask a question, provide feedback, or report a problem.

Clean Air Act Overview