Across the country, states are experimenting with innovative new approaches to brownfields and petroleum brownfields remediation and redevelopment. Through simplified regulatory processes, new methods for supporting redevelopment, and greater information sharing, states are overcoming longstanding obstacles to remediation projects. This report provides concrete examples of applied practices and programs currently in use throughout the country, along with information about regulatory and procedural changes that states have successfully deployed. The information and findings in this report can be used by diverse audiences, including policymakers, state program administrators, academics, and developers interested in learning about current brownfields trends and best practices.