Landfill Gas Risk Assessment
What It Is
A Landfill Gas Risk Assessment evaluates the potential migration of hazardous gases (such as methane and carbon dioxide) from landfill sites into surrounding land, developments, or buildings. It is a key planning and permitting requirement, ensuring that new projects near landfills or historical waste sites are safe and compliant with environmental and health regulations.
Why It Matters — Risks Without It
- ❌ Planning refusal or major project delays
- ⚠️ Serious health and safety hazards from explosive or asphyxiating gases
- 📣 Objections from regulators, environmental groups, or local communities
- 🧾 Costly remediation or redesign if risks are discovered late
What’s Measured
- Concentrations of methane (CH₄), carbon dioxide (CO₂), and trace gases
- Soil gas flows and migration pathways
- Groundwater and geological conditions influencing gas movement
- Potential impact on nearby receptors, including people, buildings, and infrastructure
- Compliance with Environment Agency and CIRIA guidance (e.g. C665)
How It Works
- Desk Study: Review landfill history, geology, and site sensitivity.
- Field Monitoring: Install boreholes and take soil gas samples over time.
- Analysis: Assess gas concentrations and flows against guidance values.
- Risk Assessment: Evaluate the likelihood of gas migration and impact on receptors.
- Reporting: Deliver a planning- and regulator-ready report with mitigation recommendations.
Who It’s For
- 🏗️ Developers building near landfills or historical waste sites
- 🏭 Industrial operators requiring landfill gas assessments for permitting
- 🏢 Consultants and engineers designing foundations and protective measures
- 🌍 Local authorities regulating landfill redevelopment projects
What You Get
- 📄 A regulator- and planning-compliant gas risk assessment report
- 📊 Field data on gas concentrations, flows, and migration potential
- 🧠 Practical mitigation measures (e.g. gas membranes, venting systems)
- ✅ Evidence to secure planning consent and protect human health
Build safely near landfills: A Landfill Gas Risk Assessment gives you the evidence to protect people, secure planning approval, and demonstrate regulatory compliance.
