80. The approach based on relocation applies(1) if by reason of the expropriation of a right in all of an immovable, the divested party must cease to carry on its activities on the immovable, but it can continue to carry them on on a substitute immovable; or
(2) if by reason of the expropriation of a right in a part of an immovable, the activities of the divested party are so disrupted that the party must cease to carry them on on all or part of the remainder, but it can continue to carry them on on a substitute immovable.