the District of Columbia and its environs
(2) The district of columbia and its environs .— The term “the District of Columbia and its environs” means those lands and properties administered by the National Park Service and the General Services Administration located in the Reserve, Area I, and Area II as depicted on the map entitled “Commemorative Areas Washington, DC and Environs”, numbered 869/86501 B, and dated June 24, 2003 .