United Kingdom

Power Station Remediation

Phased construction over 56 weeks
Form of Contract

The remediation and provision of new infrastructure on the site of a former fossil fuelled Power Station to create a construction platform for a new Biomass Power Station. This project demonstrates our ‘in house’ capability to deliver earthworks, demolition and remediation works plus detailed protection works for HV cables for a project which was executed next to an existing live Electricity sub-station.

The full scope of works was wide ranging and included the following:

  • Demolition of former fossil fuelled power station buildings. Crushing and recycling of materials.
  • Excavation, removal and crushing of below ground foundations.
  • Testing and approval of all crushed and processed materials.
  • Development and execution of remediation strategy and compliance with all EA requirements including full validation reports on completion of the works including treatment of Japanese Knotweed.
  • Working adjacent to an existing live HV Electricity sub-station required extensive protection measures, together with protection to existing cables, which included the construction of a new 27 metre span bridge to form a permanent protection solution for the cables within the permanent works.
  • Working within an alluvial flood area to construct compensation flood areas, internal roadways and connections to the highway.
  • Bio remediation of 6,000m3 of material and clean-up of 4,000m3 of asbestos contaminants.
  • Substantial Earthworks excavation totalling 125,000m3 and recycling of made ground, plus the import of 100,000m3 of graded limestone to form the construction plateau.
  • Extensive drainage works including new surface water drainage, swales and attenuation ponds.
  • Waste Disposal. A waste Management Plan was put in place including Risk Assessments. All waste location, treatment and destination was reported through the Verification Report.
  • Carried out a Value Engineering exercise to make full utilisation of on-site material and balance earthworks to reduce imports.
  • Introduced stabilisation of soils through lime and cement to give environmental and cost benefits to the project.