2.—(1) This paragraph confers power to provide that, where an enforcement officer—N.I.
(a)takes immediate enforcement action against any person; or
(b)requires any person to take immediate remedial action,
the officer shall as soon as practicable give to that person a written notice explaining why it appeared to him to be necessary to take such action or impose such a requirement.
(2) The power conferred by this paragraph is not exercisable unless the restriction, requirement or condition is such that observance of or compliance with it would be likely to involve expenditure of a significant amount.