4(1)Any specified work, and all protective works required by the Agency under paragraph 2, shall be constructed to the reasonable satisfaction of the Agency and the Agency shall be entitled by its officer at all reasonable times, on giving such notice as may be reasonable in the circumstances, to inspect the construction of such works.
(2)The nominated undertaker shall give to the Agency 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 the works comprising a structure in, over or under a watercourse is constructed otherwise than in accordance with the requirements of this Part, the Agency may by notice in writing require the nominated undertaker at the nominated undertaker’s own expense to comply with the requirements of this Part or (if the nominated undertaker so elects and the Agency in writing consents, such consent not to be unreasonably withheld) to remove, alter or pull down the work and, where removal is required, to restore the site to its former condition to such extent and within such limits as the Agency reasonably requires.
(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 the nominated undertaker, it has failed to begin taking steps to comply with the requirements of the notice and thereafter to make reasonably expeditious progress towards their implementation, the Agency may execute the works specified in the notice and any expenditure reasonably incurred by it in so doing shall be recoverable from the nominated undertaker.
(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 Agency shall not, except in an emergency, exercise the powers conferred by sub-paragraph (4) until the dispute has been finally determined.