Except as provided in § 151.4 (relating to moving and related expenses) damages for dislocation are recoverable only under Article VI-A of the act (26 P. S. § § 1-601A—1-606A) and this chapter which together, are intended to implement the Federal Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970 (42 U.S.C.A. § § 1415, 2473, 3307, 4601, 4602, 4621—4638 and 4651—4655). Damages are not recoverable under this act.