Paragraph 18 Ground/surface water and pollution preventionI1

No stage of the authorised development shall commence until for that stage, written details of the surface and foul water drainage system (including means of pollution control) have, after consultation with the sewerage and drainage authority, been submitted to and approved by the relevant planning authority. The surface and foul water drainage system must be constructed in accordance with the details approved under this sub-paragraph.

No stage of the authorised development involving the diversion of any stream or watercourse shall commence until a scheme and programme (including a timescale) for its diversion has been submitted to and (after consultation by the relevant planning authority with Natural England in relation to measures necessary to avoid or mitigate significant effects on designated European sites and with the Environment Agency) approved in writing by the relevant planning authority. The stream or watercourse must be diverted in accordance with the approved scheme and programme.

Unless otherwise permitted under sub-paragraphs (1) and (2), throughout the construction phase, operational phase, and decommissioning phase, all ditches, watercourses, field drainage systems and culverts shall be maintained such that the flow of water is not impaired or the drainage onto and from adjoining land rendered less effective.

All oil, diesel oil and lubricants stored within the authorised development for any purpose shall be stored on a base impervious to both oil and water and surrounded by an impermeable bund wall. The bunded area shall be capable of containing 110% of the largest tank’s capacity and all drain pipes, fill pipes and sight gauges shall be enclosed within its curtilage.

All drilling mud shall be stored in a bunded area with an impermeable liner within the drilling compound prior to disposal in accordance with a scheme to be agreed with the relevant planning authority.

All drilling cuttings shall be removed from each drilling compound for use in the landscape scheme or for disposal in accordance with a scheme to be agreed with the relevant planning authority.