No stage of the authorised project may commence until a written scheme of archaeological investigation for that stage has been submitted to and approved by the relevant planning authority.

The written scheme must identify areas where a programme of archaeological investigation is required and the measures to be taken to protect, record or preserve any significant archaeological remains that may be found; the written scheme must accord with the document River Humber Gas Pipeline Replacement Project Archaeological Mitigation Strategy and Written Scheme of Investigation, Arcadis, February 2016, and any subsequent updates, to be agreed by the relevant planning authority.

Any archaeological works or watching brief for a stage of the authorised project must be carried out in accordance with the approved written scheme for that stage.

Any archaeological works carried out under the approved written scheme must be by a suitably qualified person or body approved by the relevant planning authority.

A copy of any analysis, reporting, publication or archiving required as part of the written scheme must be deposited with the Historic Environment Record of the relevant planning authority within one year of the date of completion of the authorised project or such other period as may be agreed in writing by the relevant planning authority.