Paragraph 8 I1

No part of the authorised development may be commenced until written details of the proposed on-site and off-site ecological mitigation for that part, the timetable for its implementation, its monitoring and management have been submitted to and approved by the local planning authority, in consultation with Natural England.

The details of mitigation approved under sub-paragraph (1) must incorporate a net gain of at least 10 Biodiversity Units across the Order limits and any land used for ecological mitigation purposes compared with the situation that existed prior to the commencement of the authorised development.

The ecological mitigation must be implemented, monitored and managed by the undertaker in accordance with the written details approved under sub-paragraph (1).