Lagoon projects have the potential to have impacts on both terrestrial and marine assets through direct loss under the footprint (e.g. construction of the lagoon walls or turbine houses) or as a result of changes caused by the construction or operation of the lagoon (e.g. if tidal current speeds increase as a result of a lagoon this may lead to erosion of the seabed and any associated marine sites).
A detailed approach to the identification and safeguarding of cultural heritage assets will therefore be developed for each lagoon in collaboration with relevant consultees, such as Cadw in Wales and Historic England in English waters. This will include agreement on the scope of survey work such as geophysics required.
The potential impact of a lagoon on the setting of sensitive heritage sites will be considered in conjunction with the seascape, landscape and visual impact assessment.