This bill reauthorizes and updates the federal Brownfields Program, which provides grants and loans to help communities clean up and redevelop contaminated properties. It extends funding authorization through fiscal years 2024 through 2029, increasing the maximum grant amount per site from $500,000 to $1,000,000, and boosts funding for state response programs from $50 million in 2024 up to $75 million by 2029. The bill expands eligibility to 501(c)(6) organizations and clarifies that Alaska Native Regional and Village Corporations can access these funds. It also lowers the required local matching share for grants from 20 percent to 10 percent for small or disadvantaged communities, and directs the EPA to report to Congress within a year on ways to simplify the grant application process, particularly to make it easier for small and disadvantaged communities to apply. Overall, the legislation aims to make brownfield cleanup funding more accessible and effective for underserved areas while continuing support for environmental remediation nationwide.