The contamination assessment process
The Council follows a phased approach to contaminated land assessment.
Stage 1: Desk study
The desk study investigates the site's history and surroundings to identify possible contamination risks.
It should include:
- site history
- historical maps
- planning history
- environmental information
- site walkover survey
- preliminary risk assessment
- conceptual site model
The report should determine whether further investigation is required.
Stage 2: Site investigation
Where risks have been identified, an intrusive site investigation may be required.
This may include:
- soil sampling
- groundwater monitoring
- ground gas monitoring
- laboratory testing
- updated risk assessment
The investigation should confirm whether contamination presents a risk to future users or the environment.
Stage 3: Remediation strategy
If risks are identified, a remediation method statement must be prepared.
This should explain:
- how contamination risks will be managed
- any treatment or remediation works
- protective measures being installed
- how the work will be verified
The remediation strategy must be approved by the LPA before implementation.
Stage 4: Verification
Once remediation works are complete, a verification report must be submitted.
This report provides evidence that:
- approved remediation has been carried out
- contamination risks have been addressed
- any imported materials meet agreed standards
- the site is suitable for its intended use