23.—(1) The undertaker shall serve notice in writing of any transfer made pursuant to Article 9 upon the Authority together with a copy of the instrument or deed effecting such transfer within 10 business days of any such transfer.
(2) The undertaker shall serve a copy of its application to discharge requirement PW4 in the Order upon the Authority within 10 business days of the submission of such application.
(3) The undertaker shall inform the Authority in writing of the intended start date and the likely duration of tidal works on a site at least 10 business days prior to the commencement of the first tidal work on that site.
(4) The undertaker shall serve notice in writing specifying the details of the vertical and horizontal alignment of any tunnelling works at least 10 business days prior to the carrying out of the tunnelling works to which the notice relates.
(5) Not less than 3 months after the completion of construction of any tidal work or any tunnelling works in the river the undertaker shall provide to the Authority plans and sections of the work as constructed.