authority: Section 213, Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970, Public Law 91-646, 84 Stat. 1894 (42 U.S.C. 4601) as amended by the Surface Transportation and Uniform Relocation Assistance Act of 1987. title IV of Public Law 100-17, 101 Stat. 246-256 (42 U.S.C. 4601 note)