Paragraph 13 Operational surface and foul water drainageI1

No stage of the authorised development is to commence until written details of the operational surface and foul water drainage system (including means of pollution control) applicable to that stage have been submitted to and approved by the relevant planning authority in consultation with the relevant sewerage and drainage authority.

The operational surface and foul water drainage system must be constructed in accordance with the details approved under paragraph (1) before the commencement of the transitional period.