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Our Projects

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Perstorp – Wellwater Project

Demolition . Civil Engineering . Chemicals 

The Project

Trustland were requested to undertake Phase 1 civil works to facilitate the installation of a new process facility as part of the monomer process facility at Perstorp in Warrington. This involved the stripping out of existing structures, excavation and forming of a new sump, piled foundations, concrete slabs and plinths for mechanical installations including tank, pumps and pipe supports.

Challenges and Solutions

One of the biggest challenges we faced with this project was the lack of working space and storage available to us. Perstorp is a tenant on the site and the landlord would not give permission for additional access space. This resulted in having to phase each and every element of works from waste removal to deliveries of materials and equipment. This was tightly controlled in order to maintain progress. We also encountered high water tables that threatened to undermine adjacent structures, by creating significant ingress of water and running silts into the excavation for the sump.
Excavation works involved the installation of trench sheets and low profile hydraulic supporting frames to allow installation in the limited space available. Operatives were assisted by receiving system-specific training prior to the works taking place and then being supervised by experienced competent persons, working in conjunction with our Temporary Works Coordinator. To overcome the groundwater and running silts we had to utilize interlocking sheet piling and localised grouting to stem the flow of water into the excavation, and using suction excavation to remove materials and water without risk to the temporary works. We had to react swiftly, working longer hours to meet programme for the construction of the sump area.
We also worked with the client to create a new process where the permit team could walk through the proposed works and discuss on-site with all parties involved in a transparent manner. This resulted in less lost time for the project team.


This challenging project was completed within the timescales required by the larger surrounding project, despite a number of unforeseen challenges and delays. The hard work and collaborative attitude of the site team was key to getting the different works handed over to other trades on time.

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