90   Concurrence

(1)  The council must not grant an approval in relation to a matter for which this Act or a regulation requires the council to obtain the concurrence of some other person or authority unless the council has obtained the concurrence of the person or authority.

(2)  The person or authority may give the council notice that the concurrence may be assumed with such qualifications or conditions as are specified in the notice.

(3)  The person or authority may amend its notice by a further notice.

(4)  An approval given in accordance with a notice in force under this section is as valid as it would be if the council had obtained the concurrence of the person or authority concerned.

(5)  Concurrence is to be assumed if at least 40 days have passed since concurrence was sought and the person or authority has not, within that period, expressly refused concurrence.