Commentary on provisions of the Act Miscellaneous and general Section 63: Environmental Impact Assessment Regulations
Section 63 provides that where a building not forming part of the Phase One works authorised by the Act (say, a building over a station) is built to replace a building demolished or substantially demolished under the Act, the planning application for that replacement building must be accompanied by an environmental assessment where the conditions in subsection (1) are met, except where subsection (2) applies in which case the final condition of subsection (1) does not need to be met for an environmental assessment to be needed. This provision is intended to ensure that all the direct and indirect environmental effects of development authorised by the Act are properly assessed at the appropriate stage.