Contaminated Land Services

Groundwater beneath brownfield land can be highly contaminated, and may be the principal means by which contamination is moving offsite.  However, it is mostly hidden from us and unless we investigate carefully, the true nature and extent of the problem may remain unknown.  On the other hand there might not be any problem, but without detailed consideration by a specialist, mistakes can be made.

Dr Stephen Buss’ varied consultancy experience is a considerable asset because he has characterised and understood all types of hydrogeological environment.  He has characterised groundwater flow and contaminant transport in all the major aquifers, at regional and at site scale.  He has studied the fate, movement and remediation of dissolved and free phase contamination,  and he has used conceptual and numerical models for risk assessment to controlled waters and to human health.

Risk Assessment

There are a lot of risk modelling tools available to contaminated land practitioners.  These range from the apparently simple one-dimensional tools, such as the Remedial Targets Worksheet or CLEA; to complex three-dimensional distributed models.  They all have a place in the toolbox, and need careful application to ensure that the best use is made of their features. Dr Stephen Buss has a long track record of applying all the tools commonly used in the UK, plus designing and building new models where needed.

Dr Buss’ past research has included work on understanding sub-surface attenuation processes and methods of modelling them (see publications list for full references):

  • Benchmarking of common risk assessment tools (RTM, ConSim, RBCA Toolkit, BP RISC)
  • Modelling contaminant transport in low permeability porous media
  • Modelling contaminant release from hydraulically contained landfills
  • Sub-surface attenuation of ammonium, nitrate and mecoprop
  • In-situ bio-remediation of TCE DNAPL (the SABRE project)
  • Attenuation of acid solutions in Permo-Triassic Sandstone


Dr Buss has prepared and given numerous training courses on risk assessment modelling, for the public and in-house.  These include: quantitative risk assessment methods, the Remedial Targets spreadsheet (P20), and a series of seminars on groundwater chemistry and contaminant transport modelling.  He can provide any of these courses to you at your premises. There are more details here.