Paragraph 14 Noise MitigationI1

No part of the authorised development is to commence until written details of proposed noise mitigation in respect of the use and operation of that part of the authorised development, including low noise surfacing, have been submitted to and approved in writing by the Secretary of State, following consultation with the relevant planning authorities, the South Downs National Park Authority and the local highway authority on matters related to their functions.

The written details referred to in sub-paragraph (1) must either reflect the mitigation measures included in the environmental statement or, where the mitigation proposed materially differs from the mitigation identified in the environmental statement, the undertaker must provide evidence with the written details submitted that the mitigation proposed would not give rise to any materially new or materially different environmental effects in comparison with those reported in the environmental statement taking into account the mitigation identified in it.

The noise mitigation must be constructed in accordance with the approved details referred to in sub-paragraph (1) and must be retained thereafter.