Paragraph 13 Surface and foul water drainageI1

No part of the authorised development may commence until written details of the surface and foul water drainage strategy for that part have been submitted to and approved by the relevant planning authority in writing, in consultation with the lead local flood authority.

The written details submitted for approval must be substantially in accordance with the outline drainage strategy and must be consistent with the proposals submitted for approval under requirement 12 (landscape, biodiversity, access and recreation delivery strategy).

Any surface and foul water drainage strategy approved under sub-paragraph (1) must be implemented and maintained throughout the operation of the relevant part of the authorised development to which the strategy relates.