Federal approval of a transportation project that will impact a park or historic property triggers requirements under Section 4(f) of the Department of Transportation Act. Similarly, under Section 6(f) of the Land and Water Conservation Fund (LWCF) Act, when property acquired or developed with LWCF grant money is converted to a non-recreational purpose, other specific requirements must be addressed. Kaplan Kirsch & Rockwell successfully navigates the statutory and regulatory requirements to secure these projects’ approval and use the Section 4(f) and 6(f) protections as a tool to avoid project impacts.