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  2. Clean Air Act Overview

Clean Air Act Title IV - Subchapter A: Acid Deposition Control

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.

Clean Air Act SectionU.S. CodeTitle
4017651Findings and purposes
4027651aDefinitions
4037651bSulfur dioxide allowance program for existing and new units
4047651cPhase I sulfur dioxide requirements
4057651dPhase II sulfur dioxide requirements
4067651eAllowances for States with emissions rates at or below 0.80 lbs/mmBtu
4077651fNitrogen oxides emission reduction program
4087651gPermits and compliance plans
4097651hRepowered sources
4107651iElection for additional sources
4117651jExcess emissions penalty
4127651kMonitoring, reporting, and recordkeeping requirements
4137651lGeneral compliance with other provisions
4147651mEnforcement
4157651nClean coal technology regulatory incentives
4167651oContingency guarantee, auctions, reserve

Title IV - Noise Control

NOTE: The 1990 Clean Air Act Amendments added a new title IV, relating to acid deposition control, without repealing the existing title IV, relating to noise pollution. The U.S. Code designates the original title IV (noise pollution) as subchapter IV and the new title IV (acid deposition control) as subchapter IV-A.


Clean Air Act Table of Contents by Title

Clean Air Act Overview

  • Progress Cleaning the Air
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  • The Clean Air Act and the Economy
Contact Us About the Clean Air Act
Contact Us About the Clean Air Act to ask a question, provide feedback, or report a problem.
Last updated on March 30, 2026
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