17.—(1) In this Part of this Schedule—
“construction” shall include execution, placing, altering, replacing, relaying and removal and, in its application to the tidal works which include or comprise any operation, means the carrying out of that operation and “construct” and “constructed” shall be construed accordingly;
“plans” shall include plans, sections, elevations, drawings, specifications and programmes and construction methods including where applicable, such relevant hydraulic information about the river as may be reasonably requested by the Port Authority;
“river” means the River Thames;
“tidal work” means so much of any temporary or permanent work authorised by this Order (which includes the demolition of the existing Hungerford footbridge, any removal of gravel or other material, any dredging or similar work, any geotechnical investigations that may be undertaken and safeguarding works) as is in, on, under or over:—
(a)the surface of land below the level of high water spring tides forming part of the river; or
(b)any land owned, occupied or used by the Port Authority for operational purposes and land which will or may, in the reasonable opinion of the Port Authority, have an effect on the access to and the use of Charing Cross Pier or by pedestrians passing between the Victoria Embankment and Charing Cross Pier.