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Dwyryd Estuary GI to support tunnel plans

Ground investigation work is underway at the Dwyryd Estuary in North Wales to provide design information for National Grid’s plan to remove overhead power lines between Garth and Cilfor and replace them with a tunnel.

The ground investigation, which is being delivered by Structural Soils and WSP, will take until the end of October to complete.

The project is part of National Grid’s Visual Impact Provision project, which is a major national initiative to reduce the visual impact of existing high voltage power lines in protected areas across Wales and England.

National Grid has been working with local organisations including the Snowdonia National Park Authority, Gwynedd Council, Gwynedd Archaeological Trust, Cadw, the National Trust and Natural Resources Wales to find the best way to enhance the landscape and replace the overhead line with an underground solution.

The works will be carried out at a number of locations across the Dwyryd Estuary and surrounding areas, some of which will be accessed by hovercraft. A mixture of boreholes and trial pits will be dug during the course of the work.

 

 

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