(1) Service of any notice, order or other document required or authorised under this Act or any regulation to be served on any person by the General Manager may be effected by—
(a) delivering it to the person;
(b) leaving it at the usual or last known place of abode of the person; or
(c) sending it by registered post addressed to the person at his or her usual or last known address.
(2) Service of any notice, order or other document required or authorised under this Act or any regulation to be served on the General Manager may be effected by—
(a) delivering it to the General Manager;
(b) leaving it at the office of the General Manager; or
(c) sending it by registered post addressed to the General Manager at the office of the Authority.