31.—(1) No later than 30 April 2008 the competent authority shall—
(a)draw up an action plan for places near first round major railways; and
(b)submit that action plan to the Department.
(2) No later than 30 April 2013 the competent authority shall—
(a)draw up an action plan for places near major railways; and
(b)submit that action plan to the Department.
(3) Paragraph (4) applies—
(a)whenever a major development occurs affecting the existing noise situation; and
(b)at least every five years after the date on which an action plan is adopted or approved pursuant to regulation 47.
(4) The competent authority shall—
(a)review; and
(b)if necessary, revise;
the action plan.
(5) An action plan revised pursuant to paragraph (4)(b) shall be submitted to the Department within three working days of its revision.