Paragraph 7 I1

After the purpose of any temporary works has been accomplished, the relevant undertaker must with all reasonable dispatch, or after a reasonable period of notice in writing from A. B. Ports requiring the relevant undertaker so to do, remove any such temporary works or any materials relating to them that may have been placed below the level of high water by or on behalf of the relevant undertaker.

If the relevant undertaker fails to do so within a reasonable period after receiving such notice, A. B. Ports may remove them and may recover the reasonable costs of doing so from the relevant undertaker.