Paragraph 13

If at any time after the completion of a specified work, not being a work vested in the authority, the authority gives notice to the undertaker informing it that the state of maintenance of the specified work appears to be such that the specified work is causing or is likely to cause detriment, the undertaker must, on receipt of such notice, take such steps as may be reasonably necessary to put the specified work in such state of maintenance as not to cause such detriment and if the undertaker fails to do so, the authority may make and do in and upon the land of the undertaker or the authority all such works to put the specified work in such state of maintenance as before and the cost, expenses and losses incurred by the authority in so doing must be repaid to the authority by the undertaker.