Case studies

Bioremediation

Case studies

Development of a Former Shell oil depot


RSK carried out a six-month turnkey bio-remediation programme at a four-acre former oil depot in Llanbradach, mid-Glamorgan, proposed for redevelopment as a housing site. The approach developed enabled the phased release of two-thirds of the site to Taylor Woodrow three months earlier than originally programmed.

A key feature of the remedial programme has been the emphasis on the sustainable reuse of materials, which has enabled treated soil to remain on-site and be used to raise the site level to conform to the Environment Agency’s flood protection requirements.

These successful outcomes were recorded on the project:

  • agreement of realistic remedial targets achieved by robust risk assessment
  • 8000 tonnes of waste, and up to 400 lorry movements avoided by treatment-based remediation
  • worked with local environmental health officers (EHO) to minimise the impact on residents and any complaints received were dealt with promptly
  • remediation work was kept off the development critical path by an innovative and flexible approach
  • able to handover two-thirds of the site early
  • assisted in reducing the need for import by improving the geotechnical properties of site soils so they were suitable for use under the proposed roads.

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