A Phase 2 ground/site investigation is conducted to provide a site-specific contamination risk assessment and/or geotechnical investigation to determine the requirements for remedial measures and to aid with foundation design. A Phase 2 investigation can also include determining the feasibility of soakaways and concrete classification. Ground investigation techniques may include digging trial pits, sinking boreholes, insitu testing and obtaining samples for laboratory analysis to enable reporting on both geotechnical and environmental issues.
Phase 3 remediation is undertaken if the Phase 1 and Phase 2 investigations have determined it is required. The Phase 3 assessment aims to develop a land remediation strategy to demonstrate how the site will be safely developed for its purpose.
The aim of any Phase 3 remediation works is to remove or break all the viable identified pollutant linkages on contaminated sites. The end result being to make previously contaminated land ‘suitable for use’. Remediation could be required to contaminated soils, contaminated controlled waters (ground of surface water) and hazardous ground gases.
A Verification (sometimes referred to as ‘Validation’) report is vital to ensure that planning conditions associated with contaminated land are able to be satisfied and allow proposed developments to proceed.
The Validation Report details information relating to the work undertaken as part of the remediation. It will demonstrate the success of any Phase 3 remediation measures used to break pollutant linkages identified in Phase 1 & 2. This is usually a pre-occupation planning condition.
