4.—(1) No part of RB 36 may be closed on a Saturday, Sunday or public holiday and the total number of days of closures under article 3 must not exceed 70 days in any calendar year and 25 days in any calendar quarter.
(2) When any part of RB 36 is closed under article 3 it must not be closed—
(a)on more than two consecutive days; and
(b)before 7am or after 6pm.
(3) Anglo-Norden must display the advance advisory notice for 24 hours prior to a closure of a part of RB 36 under article 3 and must also display the advisory notice at all times during such a closure.
(4) At all times during a closure of the Gasworks Quay part under article 3(a)—
(a)Anglo Norden must provide and maintain the alternative route; and
(b)the exercise of the power conferred by article 3(a) shall not prevent a person from proceeding along the Gasworks Quay part at any time in order to gain access to or egress from land or premises adjacent to or accessible only from the Gasworks Quay part.
(5) At all times during a closure of the Eagle Wharf part under article 3(b) Anglo Norden must do nothing to prevent the use of the full width of Patteson Road at its junction with RB 36.
(6) The exercise of the power conferred by article 3(a) or (b) shall not prevent traffic authorised to do so by Associated British Ports as harbour authority for the Port of Ipswich from having access to, or using, RB 36 at any time in connection with the carrying out of its harbour undertaking.
(7) The exercise of the power conferred by article 3(a) or (b) shall not prevent access to, or the use of, RB 36 by fire engines, police vehicles or ambulances at any time.
(8) Anglo-Norden must ensure that when any part of RB 36 is opened following a closure it is in a condition fit for public use, in particular, but without prejudice to the generality of the foregoing, by the removal of any debris or obstruction or the repair of any damage or deterioration occasioned by operations related to the discharging of ships during the closure.