The River Mersey (Mersey Gateway Bridge) Order 2011

37.—(1) If, by reason of the construction of any specified work or of the failure of any such work, the efficiency of any drainage work for flood defence purposes is impaired, or that drainage work is otherwise damaged, such impairment or damage shall be made good by the undertaker to the reasonable satisfaction of the Agency and if the undertaker fails to do so within such reasonable period as the Agency may require by notice in writing to the undertaker, the Agency may make good the same and recover from the undertaker the expense reasonably incurred by it in doing so.

(2) If such impaired or damaged drainage work is not made good to the reasonable satisfaction of the Agency, the Agency may by notice in writing require the undertaker to repair and restore the work to its former standard of efficiency or where necessary to construct some other work in substitution for it.

(3) If, within a reasonable period being not less than 28 days beginning with the date on which a notice in respect of any impaired or damaged drainage work is served under sub-paragraph (2) on the undertaker, the undertaker has failed to begin taking steps to comply with the reasonable requirements of the notice and has not subsequently made reasonably expeditious progress towards their completion, the Agency may do what is necessary for such compliance and may recover any expenditure reasonably incurred by it in doing so from the undertaker.

(4) In the event of any dispute as to the reasonableness of any requirement of a notice served under sub-paragraph (1), the Agency shall not, except in a case of emergency, exercise its powers to make good the drainage works until the dispute has been finally determined.