(1) The Natural Heritage Ministerial Board must prepare estimates of debits from the Account that are to be made for purposes of the Account.
(2) The estimates are to be prepared for:
(a) each financial year; and
(b) such other periods (if any) as the Natural Heritage Ministerial Board determines.
(3) In exercising its powers under this section, the Natural Heritage Ministerial Board must have regard to:
(a) the investment strategy for the Account; and
(b) such other matters as the Natural Heritage Ministerial Board considers relevant.
(4) Money must not be debited from the Account for a purpose of the Account otherwise than in accordance with estimates prepared under this section.