29.—(1) Before beginning to construct any specified work, Network Rail shall submit to the Agency plans of the work and such further particulars available to it as the Agency may within 28 days of the submission of the plans reasonably require.
(2) Any such specified work shall not be constructed except in accordance with such plans as may be approved in writing by the Agency, or determined under paragraph 40.
(3) Any approval of the Agency required under this paragraph—
(a)shall not be unreasonably withheld;
(b)shall be deemed to have been given if it is neither given nor refused within two months of the submission of the plans for approval; and
(c)may be given subject to such reasonable requirements as the Agency may make for the protection of any drainage work or fishery or for the protection of water resources, or for the prevention of flooding or pollution and in the discharge of its environmental and recreational duties.