EPA is responsible for developing and implementing programs that protect the stratospheric ozone layer under ____.

• A. Title V of the Clean Air Act
• B. Title VI of the Clean Air Act
• C. Title IV of the Clean Air Act
• D. Title II of the Clean Air Act

Answer: (B)

The part of the Clean Air Act that covers protecting the stratospheric ozone layer is the section dedicated to ozone protection. This title implements measures aligned with the Montreal Protocol, including prohibiting or phasing out ozone-depleting substances, controlling production and import, and establishing licensing and reporting requirements. It is specifically designed to address the substances that harm the ozone layer, such as CFCs and halons, and to manage exemptions and enforcement. The other parts of the Act deal with different environmental issues—emissions from mobile sources, permit programs for major stationary sources, and controls like the acid rain program—and do not focus on the protection of the ozone layer.