Groundwater risk assessment and modelling

Contaminated Land and Groundwater

Contaminated land and groundwater

The redevelopment of brownfield land frequently requires an assessment for the potential presence of contaminated land and groundwater due to historical land use.  Where a potential source has been identified an investigation and risk assessment may be required to protect site users, the water environment and ecological receptors.

Hydrogeologists at Hydrogeo have undertaken project management, site investigation design and supervision, and detailed assessment of numerous contaminated land and groundwater projects.  We have experience in providing expertise on a wide range of residential, recreational, commercial and industrial development schemes.  Projects range from contamination related to domestic heating oil spillage to significant leakage from large aviation fuel storage facilities.  Project elements include;

  • Phase 1 desk studies to identify potential contamination sources
  • Design and supervision of site investigations
  • Groundwater/surface water monitoring strategies
  • Conceptual model development (identify source(s), pathway(s) and receptor(s))
  • Human health risk assessment (CLEA)
  • Quantitative Groundwater risk assessment
  • Ecological risk assessment
  • Input to remedial strategies.

Hydrogeological Risk Assessments for Landfill

A Hydrogeological Risk Assessment (HRA) is required for new landfill sites at both the planning stage and to obtain a PPC Permit.  An HRA is also required for the restoration and aftercare plans for old landfill sites and as an integral part of the site closure application.

Hydrogeologists at Hydrogeo have been undertaking hydrogeological risk assessments for landfill sites for over twelve years, and have experience in undertaking the investigation, monitoring, conceptualisation and design input to a wide variety of sites with regards to groundwater protection.  We can undertake the following for both new sites, extensions and sites approaching closure;

  • Site investigation and monitoring schemes
  • Regulatory liaison
  • Hydrogeological risk assessments and groundwater modelling
  • PPC permit applications (HRA)
  • Landfill closure and restoration plans
  • Leachate management.