No part of the authorised development may commence until a code of construction practice for that part of the authorised development has been submitted to the county planning authority by the undertaker following consultation with the Environment Agency, the harbour authority and the local planning authority and the submitted code of construction practice has been approved by the county planning authority.

Any code of construction practice produced under sub-paragraph (1) must be in accordance with the interim code of construction practice.

The authorised development must be carried out in accordance with the code of construction practice produced under sub-paragraph (1).