2.—(1) A tidal work shall not be constructed, altered, replaced or re-laid except in accordance with plans approved by the Secretary of State and subject to any conditions and restrictions imposed by him before the work is begun.
(2) If a tidal work is constructed, altered, replaced or re-laid in contravention of this paragraph or of any condition or restriction imposed under this paragraph—
(a)the Secretary of State may by notice in writing require the undertaker at its own expense to remove the tidal work or any part of it and to restore the site to its former condition or so near its former condition as is acceptable to him; or
(b)where it appears to the Secretary of State urgently necessary so to do, he may himself remove the tidal work, or part of it, and so restore the site.
(3) If at the end of 28 days from the date when notice is served on the undertaker under sub-paragraph (2)(a) above it has failed to comply with the requirements of the notice, the Secretary of State may execute the works specified in the notice.
(4) The Secretary of State may, if he considers it expedient, order a survey and examination of any site on which it is proposed to execute a tidal work.