Paragraph 1

The following provisions of this Part of this Schedule shall, unless otherwise agreed in writing between the Secretary of State and the Port Authority, have effect for the protection of the Port Authority and users of the river.

In this Part of this Schedule—

• “construction” includes renewal;

• “scouring” includes disturbance or collapse of the foreshore or bed of the river; and

• “tidal work” means so much as is on land below the level of mean high-water springs of any of the works authorised by this Act and of any work for the maintenance or improvement of the tunnels, other than a work carried out wholly within the structure of the tunnels;

and for the purposes of this Part of this Schedule operations for construction, maintenance or improvement are to be regarded as affecting the river if they involve interference with navigation in the river or the flow or regime of the river.