Article 8 Power to dredge
Without prejudice to any other powers which may be exercisable by the Authority within the port the Authority may, for the purposes of constructing and maintaining the works or the harbour or the port and of affording access to the port and the works by vessels, from time to time deepen, dredge, scour, cleanse, alter and improve so much of the bed, shores and channels of the port as lie within the harbour limits and may use, appropriate or dispose of the materials (other than wreck within the meaning of Part IX of the 1995 Act), from time to time dredged by them.
No such materials shall be laid down or deposited—
in contravention of the provisions of any enactment as respects the disposal of waste, or
in any place below the level of high water otherwise than in such position and under such conditions and restrictions as may be approved or prescribed by the Ministers.