Notwithstanding the provisions of sub-regulation (1), a permit may be issued for a period exceeding ten years, if it is issued-
(a) for a restricted activity that will be carried out by a scientific institution;
(b) in terms of an integrated permit and the other law to which the permit relates provides for a longer period; or
(c) to an applicant who is in possession of a valid authorisation in terms of section 22(1)(a) or (b) of the National Water Act, 1998 (Act No. 36 of 1998) or an aquaculture permit.