30.—(1) Subject to sub-paragraph (2), any specified work, and all protective works required by the lead local flood authority under paragraph 29, must be constructed—
(a)without unreasonable delay in accordance with the plans approved or deemed to have been approved or settled under this Part of this Schedule; and
(b)to the reasonable satisfaction of the lead local flood authority,
and an officer of the lead local flood authority is entitled to watch and inspect the construction of such works.
(2) Network Rail must give to the lead local flood authority not less than 14 days’ notice in writing of its intention to commence construction of any specified work and notice in writing of its completion not later than 7 days after the date on which it is brought into use.
(3) If any part of a specified work or any protective work required by the lead local flood authority is constructed otherwise than in accordance with the requirements of this Part of this Schedule, the lead local flood authority may by notice in writing require Network Rail at Network Rail’s own expense to comply with the requirements of this Part of this Schedule.
(4) Subject to sub-paragraph (5), if within a reasonable period, being not less than 28 days from the date when a notice under sub-paragraph (3) is served upon Network Rail, it has failed to begin taking steps to comply with the requirements of the notice and subsequently to make reasonably expeditious progress towards their implementation, the lead local flood authority may execute the works specified in the notice and any expenditure incurred by it in so doing is recoverable from Network Rail.
(5) In the event of any dispute as to whether sub-paragraph (3) is properly applicable to any work in respect of which notice has been served under that sub-paragraph, or as to the reasonableness of any requirement of such a notice, the lead local flood authority must not except in emergency exercise the powers conferred by sub-paragraph (4) until the dispute has been finally determined.