Encountering galligu is almost a rite of passage when working in areas like Runcorn, Widnes, St Helens, or near the Sankey Canal. Yet, many are unaware of this unique and often problematic material beyond these regions. Let’s dive into what galligu is, its history, and how it’s managed today.

Over the past year, our Technical Director Mike Plimmer has delivered a range of presentations at conferences organised by EPUK, RICS and the Geological Society. Mike specialises in the development of risk assessment models for contaminated land remediation and in the classification and re-use of construction waste; he leads GEA’s contaminated land team and has over 30 years’ experience in geotechnical and contaminated land projects.