Surface and foul water drainage
13.—(1) No part of the authorised development other than the preliminary works is to commence until written details of the surface and foul water drainage system, reflecting the mitigation measures in the CEMP and in chapter 13 of the environmental statement, including means of pollution control, have been submitted to, and approved in writing, by the Secretary of State following consultation with the relevant planning authority and the local highway authority.
(2) The drainage system must be constructed in accordance with the approved details referred to in sub-paragraph (1) unless otherwise agreed in writing by the Secretary of State following consultation with the relevant planning authority and the local highway authority.
(3) The surface and foul water drainage system must be constructed in accordance with the approved details referred to in sub-paragraph (1) and subsequently maintained.