All you need to know about dealing with contaminated sites in Stoke-on-Trent
Historically, Stoke-on-Trent’s extensive industrial activities, including coal mining, steel production and the pottery industry, have left a legacy of land contamination. Common contaminants include heavy metals, hydrocarbons, and asbestos, which pose risks to human health and the environment if not properly managed.
Stoke-on-Trent City Council is committed to managing contaminated areas to ensure public health and environmental safety. It has a specific strategy which involves identifying, assessing, and remediating contaminated sites within the city.
The council actively promotes the redevelopment of brownfield sites – previously developed land that may be contaminated – to stimulate economic growth and prevent urban sprawl. By focusing on these areas, the council aims to revitalise underutilised spaces in Stoke-on-Trent while preserving greenfield sites.
Reusing contaminated sites: the risks
Breaking ground on contaminated areas can establish new routes for pollution to spread and potentially harm people or the wider environment. For contamination to pose a significant risk, these three factors must be evident: if any element is missing, the risk is minimal.
- Identified contamination.
- A pathway for pollution into the surrounding area.
- A receptor, i.e., people or the environment.
Legal considerations
Under Part 2A of the Environmental Protection Act 1990, land is classified as contaminated if it contains substances that create a significant risk to health, property, or the environment. Local planning authorities are responsible for identifying such sites and ensuring they are properly remediated. Three principles apply when managing a contaminated site:
- Risk-based approach: A full assessment is required to evaluate potential harm to people, water sources, and the environment.
- `Polluter Pays’ principle: The responsible party must fund the clean-up if they can be identified.
- Remediation through development: If the land is being redeveloped, the developer must assess and manage contamination as part of the project.
Responsibility for contaminated sites
According to the National Planning Policy Framework (Paragraph 197), developers and landowners are responsible for properly redeveloping contaminated sites. Local planning authorities are responsible for monitoring land that poses significant risks to public health or the environment.
Developing on potentially contaminated land
The first step is to consult the local authority’s planning department. A pre-application consultation helps clarify contamination concerns and will outline the necessary reports.
The Contaminated Land Risk Assessment
A geo-environmental consultant follows the Environment Agency’s Land Contamination Risk Management guidelines when conducting a contaminated land risk assessment:
- Phase 1 – Desk study: Reviewing historical maps and environmental records to identify potential sources of contamination.
- Phase 2 – Site investigation: Conducting on-site inspections, collecting soil and groundwater samples, and possibly performing additional surveys like vapour extraction or landfill gas assessments. To assess ground conditions, trial pits may be dug, and consultants might use a conceptual site model to help them evaluate the site.
- Risk assessment: This will analyse potential threats to human health, water sources, and the environment.
- Remediation: If contamination is found, appropriate measures—such as on-site soil treatment, off-site disposal, or protective capping—are implemented.
- Validation and reporting: Consultants verify that remediation meets regulatory standards and submit a report to the local planning authority.
Ensuring safe redevelopment
The above assessment will clarify specific problems on a site and provide recommendations about the remediation measures needed to pave the way for safe redevelopment. Following the advice will ensure compliance with Environmental Protection Act regulations and Environment Agency guidelines.
Arbtech has a team of experienced geo-environmental consultants operating UK-wide, providing surveys for planning applications. For more information about a risk assessment in Stoke-on-Trent, fill in the quick quote form at the top of this page.