8.—(1) In the event that contaminated material, including impacted groundwater, is found at any time when carrying out the authorised development, which was not previously identified in the environmental statement, the undertaker must cease construction of the authorised development in the vicinity of that contamination and must report it immediately in writing to the Secretary of State, the Environment Agency and the relevant planning authority, and in agreement with the Environment Agency and the relevant planning authority undertake a risk assessment of the contamination, and sub-paragraphs (2) and (3) will apply.
(2) Where the undertaker determines that remediation is necessary, a written scheme and programme for the remedial measures to be taken to render the land fit for its intended purpose must be prepared and submitted to and approved in writing by the Secretary of State following consultation with the Environment Agency and the relevant planning authority.
(3) Remedial measures must be carried out in accordance with the approved scheme.