top of page
Phase II Geoenvironmental Site Investigation

Where a Phase I desk study identifies the requirement for further investigations on a site, a Phase II intrusive site investigation is usually recommended. The investigations are usually designed as a combination of geotechnical and contaminated land assessments, in order to support planning applications or to discharge planning or building conditions.

The purpose of a Phase 2 Site Investigation is to physically inspect the condition of the soil, groundwater and surface water that may have been impacted by the sources of contamination identified in the Phase I Desk Study.  The Phase II investigation is site specific with the method(s) of investigation chosen being dependent on a number of factors, such as access, operational constraints, geology, potential contaminant sources and the receptors to be targeted (e.g. shallow soils, groundwater). 

The services we offer as part of a Phase II investigation include: 

  • Geotechnical and environmental site investigation design.

  • Hand excavated pits and hand augering.

  • Machine excavated trial pits using a hydraulic excavator.

  • Windowless sample boreholes with soil sampling.

  • Cable percussive boreholes with soil sampling.

  • Rotary boreholes and rock core logging.

  • Mining investigations.

  • Geophysical surveys.

  • In situ and laboratory geotechnical testing.

  • Generic Quantitative Risk Assessment (GQRA) of soil and groundwater.

  • Detailed Quantitative Risk Assessment (DQRA) of soil and groundwater.

  • Ground gas monitoring and risk assessment to BS8485:2015+A1:2019

  • Groundwater modelling.

  • Interpretative report writing with geotechnical and environmental recommendations.

bottom of page