A site investigation (Phase 2) is undertaken to provide a quantifiable risk assessment of potential pollutant source-pathway-receptor relationships at a site in the context of the proposed development.

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Site-based investigations may include (but not be limited to):

  • Soil boreholes;
  • Trial pits;
  • Rotary boreholes;
  • Soil sampling;
  • Drainage assessment;
  • Groundwater elevation monitoring and sampling;
  • Chemical analysis of soil and groundwater samples; and
  • Gas monitoring.

The data obtained from the site investigation is subjected to a Generic Quantitative Risk Assessment (GQRA). This is designed to build upon the initial Conceptual Site Model (CSM) developed in the Preliminary Contamination Risk Assessment (Phase 1 Desk Study) and is undertaken to establish the level of risk to human health, property, protected species, or the environment based off site-won data.

What is the objective of a site investigation?

We design our site investigations (Phase 2) to assess the presence of active pollutant source-pathway-receptor relationships in the context of the proposed development, and to establish if further investigation is required.

If a site is indicated to be contaminated then we can design a remediation strategy and methodology to mitigate this risk.

Will further site investigations be required?

Further site-based investigation may be required if significant risks to human health, property, protected species, or the environment is identified from the Generic Quantitative Risk Assessment (GQRA).

This may involve (but not be limited to) a Detailed Quantitative Risk Assessment (DQRA) using site-specific information to estimate the level of risk from an identified active pollutant source-pathway-receptor relationship, the delineation of contamination hotspots, or further gas monitoring if significant concentrations are recorded.

Contaminated Land - Related Services

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