5.—(1) The Agency may construct and maintain within the limits shown on the deposited plans the following works together with any necessary works or conveniences required in connection with them—
Work No.1 — A flood defence structure consisting of a sill in and flood gates that can be closed across Warrengate Road and associated structures.
Work No.2 — A raising of part of Warrengate Road between point TL231036 and TL231034 and the construction of a flood defence bund to the west of that part of Warrengate Road.
Work No.3 — A compensatory environmental area of 4643 square metres to the south of Work No.1.
Work No.4 — Road closure barriers on Warrengate Road and the unnamed road to the west of Hawkshead Lane and a turning head on Hawkshead Lane.
(2) Work No.1 includes altering the level of part of Warrengate Road but the Agency shall ensure that, when Warrengate Road is not closed under article 6, no part of the carriageway of Warrengate Road is obstructed by the work.
(3) Section 153 of the Public Health Act 1875(1) (power to require apparatus to be moved) applies for the purposes of paragraph (1) as it applies for the purposes of that Act except to the extent, if any, that the works are regulated by the provisions of Part III of the New Roads and Street Works Act 1991(2).