56.Section 14(1), (2) and (3) provide that where a building is demolished or substantially demolished for the purposes of the Crossrail works, any later planning application for its replacement (for example, for building over a Crossrail station) must be accompanied by an environmental assessment if the building demolished or substantially demolished is listed in the table in the section or it is not so listed but the provision of the replacement would be likely to have significant effects on the environment. This provision is intended to ensure that all the direct and indirect environmental effects of the development authorised by the Act are properly assessed at the appropriate stage.