Louisiana Contractors License Practice Exam 2025 – Comprehensive All-in-One Guide for Exam Success

The Clean Air Act is a comprehensive federal law that regulates air emissions from stationary and mobile sources. The primary purpose of the Act is to ensure that the air quality meets health-based standards set by the Environmental Protection Agency (EPA). It establishes regulations to control the release of harmful pollutants, including both criteria pollutants—like ozone and particulate matter—and hazardous air pollutants. The Act empowers the EPA to enforce air quality standards, monitor air pollution levels, and mandate state implementation plans to achieve and maintain these standards.

This focus on air quality makes the selection about limits on air pollutants the accurate choice. The other options pertain to different areas of environmental regulation. Limits on water pollutants are governed by laws like the Clean Water Act, while Environmental Impact Statements are mandated under the National Environmental Policy Act (NEPA). Historic preservation standards are regulated by the National Historic Preservation Act and similar laws. Each of these laws targets distinct environmental concerns, emphasizing the Clean Air Act's specific focus on air pollution regulation.