If the Minister refers the draft variation to the Authority, the Authority shall:
(a) reconsider the draft variation;
(b) have any further consultations directed by the Minister and such other consultations as the Authority thinks necessary;
(c) consider any suggestions made by the Minister;
(d) if it thinks fit, alter the draft variation; and
(e) re - submit the draft variation to the Minister for approval;
and subsection 70(1) and, if necessary, this section, apply again.