Ground Investigations (ongoing)
A Ground Investigation (GI) is required to find out the types and depths of soil and rock which are present below the ground, this usually involves carrying out excavation (trial pits) or boreholes. This information is used to determine whether the proposed flood defences can be safely and cost effectively constructed. We can also use special techniques to find out ground conditions without excavating or sinking boreholes - this is called geophysical surveying and uses ground penetrating radar and ultrasound to work out the different soil and rock types.
Additionally, soil and rock samples will be taken from various locations for laboratory testing to determine geotechnical parameters such as strength, stiffness, compressibility and permeability. Also environmental and chemical testing will be carried out to determine levels of any contamination in the ground that could affect construction workers, nearby residents or the environment.
During the Ground Investigation, we will do everything reasonably practicable to safeguard the environmental conditions in these areas.
Due to the sheer size of the Grangemouth FPS, the Ground Investigation works, have been split into multiple contracts.
In 2014 ground investigations were carried out on the River Carron west of the M9 and also on the River Avon outwith petrochemical works.
The latest phase of the ground investigation works within the petrochemical works and refinery commenced on site in April 2017 and is due to be complete by March 2018
Further ground investigations are due to take place in 2018 and 2019. This will cover multiple areas throughout the scheme extents. Parties affected by the ground investigations work will be contacted nearer the time to discuss more details of the proposed works.
The ground investigations results will provide valuable information that will be used by the project team during the option appraisal, outline design and detailed design stages of the project.