Paragraph 65 I1

If any tidal work is abandoned or falls into decay and is in such a condition so as to interfere or cause reasonable apprehension that it may interfere with navigation in the river so that it may affect HST or access to HST in any way, C.RO may by notice in writing require the undertaker either to repair or to restore the specified work, or any part of it, or to remove the work and restore the site of that work to its condition prior to the construction of the specified work, to such an extent and to such limits as C.RO thinks proper acting reasonably.