Piling works – important update (November 2023)

Our project will soon be entering a critical phase within our compound at Garth, where we will start preparing the temporary launch shaft for our Tunnel Boring Machine (TBM) which will create the tunnel under the Dwyryd Estuary to Llandecwyn. 

The first part of this work will involve sheet piling, an essential process which involves driving large steel sheets, known as piles, into the ground to create a sturdy barrier to provide temporary support, enabling us to remove soil and prepare the launch shaft for our TBM. 

This work will start during the early part of week commencing 13 November 2023 and should be completed within four to six weeks. 

All work will be undertaken between the hours of 9.00am to 5.00pm, Monday to Friday.

While sheet piling is a necessary and standard construction practice, it will generate an increased level of noise during the process. 

We want to make sure that our impact on the local community is kept to a minimum and are committed to taking additional precautions to minimise any disturbance to the best of our ability. 

We will be making use of some of the current best practice in noise mitigation measures including the use of the recently erected noise barrier, sheet pile pre-auguring (a technique that prepares the ground before the pile is inserted into place) and the use of a noise reducing shroud around the top of the piling machine.

As an additional measure to ensure we keep noise down, we will be undertaking supplementary noise monitoring during the initial phase of piling. This is to both check our existing noise model results and to seek further opportunities to reduce the noise being generated by modifying our working methods.

If you have any urgent issues or concerns either before or during this phase of works, please contact us on 0800 019 1898 and leave a message if prompted and we will contact the relevant member of the project team as soon as possible.