Releases, without consideration, all right, title, and interest of the United States in and to the surface portion of property located at 615 North Burnett Road in Tipton, California, which encroaches upon land originally conveyed by the United States to the Union Pacific Railroad Company as part of a right-of-way for the construction of transcontinental railroads. Declares that the United States retains any subsurface mineral rights held by it with respect to such property.