What does the Clean Air Act regulate?

The Clean Air Act is a comprehensive federal law that focuses specifically on regulating air emissions from stationary and mobile sources. This legislation aims to ensure that air quality is maintained and improved to protect public health and the environment. The Act sets forth emission standards for various pollutants, which includes regulations governing emissions from vehicles, industrial facilities, and other sources that contribute to air pollution.

By targeting emission standards for vehicles, the Clean Air Act plays a crucial role in reducing harmful pollutants such as carbon monoxide, nitrogen oxides, and volatile organic compounds that can contribute to smog and other air quality issues. This regulation is important for public health, as improved air quality is linked to reduced respiratory conditions and other health problems associated with air pollution.

In contrast, the other options focus on different environmental aspects. Water quality standards are typically governed by laws such as the Clean Water Act, while waste disposal methods fall under various waste management regulations. Construction project environmental impacts are addressed through different environmental assessment processes and regulations, not specifically by the Clean Air Act.