Paragraph 18 Surface and foul water drainageI1
England, Wales and Scotland
No stage of the onshore works must commence until written details of the surface and (if any) foul water drainage system (including means of pollution control) for that stage have, following consultation with the relevant sewerage and drainage authorities and the Environment Agency, been submitted to and approved in writing by the relevant planning authority.
The surface water drainage works must restrict surface water discharge to no more than the greenfield run off rate (1.4 litres per second per hectare) in line with the recommendations of the Flood Risk Assessment (Appendix B to Chapter 24 of the environmental statement).
The submitted details must—
provide information about the design storm period and intensity, the method employed to delay and control the surface water discharged from the site (surface water drainage scheme);
include a timetable for implementation (foul and surface water schemes); and
provide a management and maintenance plan for the lifetime of the proposed schemes (foul and surface water management).
The surface and foul water drainage systems must be constructed, managed and maintained in accordance with the approved details and the timing and phasing arrangements embodied within the approved written details.
Annotations
Commencement
- I1
Sch. 1 para. 18 in force at 11.3.2015, see art. 1