The assessment provisions apply in relation to the making of an order under section 1 (orders as to railways, tramways etc.) or 3 (orders as to inland waterways etc.) of the Transport and Works Act 1992 M1.

Where in such a case the appropriate authority considers that any adverse effects of the plan or project on the integrity of a European site or a European offshore marine site would be avoided by making modifications to the proposals, the appropriate authority may make an order subject to those modifications.

The review provisions apply to an order mentioned in paragraph (1) unless the works to which the order relates have been completed before the site became a European site or a European offshore marine site.

Where, on the review of such an order, the appropriate authority considers that any adverse effects on the integrity of a European site or a European offshore marine site of the carrying out or, as the case may be, the continuation of the plan or project would be avoided by a variation of the order, the appropriate authority may vary it accordingly.

In conjunction with the review of any such order the appropriate authority must review any direction deeming planning permission to be granted for the plan or project and may vary or revoke it.

In relation to an order mentioned in paragraph (1) which has effect or would have effect in both England and Wales, any reference in this Chapter to the appropriate authority is taken to be a reference to the Secretary of State.