The main purpose of this legislation is to update the Noise Control Act of 1972 by establishing a clear timeline for reviewing and potentially revising noise criteria. The goal is to ensure that noise regulations remain relevant and effective in protecting public health and the environment from excessive noise. Key provisions of the legislation include a requirement for the Administrator to review the existing noise criteria within two years of the law being enacted. After this initial review, the Administrator must conduct such reviews at least once every ten years.