4.—(1) The licence holder must submit a benthic ecology monitoring and mitigation plan, for approval by the MMO, prior to the commencement of the first licensed activity.
(2) The monitoring and mitigation plan submitted for approval must include—
(a)the detailed methodology and extent of pre-construction benthic ecology surveys to be carried out;
(b)the detailed methodology and extent of benthic ecology surveys to be carried out prior to the removal of any temporary structures constructed as part of Work No. 20A;
(c)the detailed methodology and extent of post-construction benthic ecology surveys to be carried out; and
(d)details of how any necessary mitigation will be identified following the carrying out of the surveys and implemented.
(3) The licence holder must not commence the first licensed activity until the MMO has approved in writing the submitted monitoring and mitigation plan.
(4) The licence holder must—
(a)not commence the first licensed activity until it has carried out the pre-construction surveys and implemented any pre-construction mitigation measures required by the monitoring and mitigation plan approved under sub-paragraph (3);
(b)not remove any temporary structures constructed as part of Work No. 20A until it has carried out the surveys and implemented any mitigation measures required by the monitoring and mitigation plan approved under sub-paragraph (3) in relation to the removal of those structures; and
(c)following completion of construction of the authorised development (including the removal of any temporary structures constructed as part of Work No. 20A), carry out the post-construction surveys and implement any post-construction mitigation measures required by the monitoring and mitigation plan approved under sub-paragraph (3), unless otherwise agreed in writing by the MMO.