(1) Before revoking or modifying an approval, the council must inform, by notice--(a) each person who, in its opinion, will be disadvantaged by the revocation or modification of the approval, and(b) each person and authority whose concurrence was required to the granting of the approval.
(2) The notice must include the council's reasons for revoking or modifying the approval.
(3) The council must give those persons and authorities the opportunity of appearing before the council (or a person appointed by it) to show cause why the approval should not be revoked or modified.