(1) The Trust may, by
written notice, cancel a river protection notice or, subject to
subsections (2) and (3), amend it —
(a) by
extending the period within which a requirement contained in the river
protection notice must be complied with if the Trust is satisfied that the
circumstances of the case justify such an extension; or
(b) by
revoking or amending any requirement contained in the river protection notice.
(2) The Trust, before
exercising the power of amendment conferred by subsection (1), must give
the person on whom the river protection notice is binding a reasonable
opportunity to show cause in writing why that power should not be exercised.
(3) An opportunity is
not a reasonable opportunity for the purposes of subsection (2) unless
the person is informed in writing of the right to show cause under that
subsection not less than 21 days before the day on which the Trust
exercises the power in question.