Chemical injection

Historical infilling of a river channel with refinery wastes presented serious obstacles to the successful regeneration of a former industrial facility and gasworks site. The site was underlain by a thick 3M layer of acid tar, an extremely hazardous contaminant. As well as preventing commercial evolution of the site, regulators were concerned these refinery wastes posed a serious issue to a nearby watercourse. Left untreated, contamination could significantly degrade the surrounding aquatic environment, causing lasting harm.

A remediation strategy was quickly designed by our team. Here we aimed to stabilise the tars, encapsulating severely contaminated soils. As well as encapsulating the soil, stabilising the soil in this way allowed the soil quality to recover, enabling it to be used as a base for the foundations of a new development. For us, it is essential that our clients, consultants and regulators are confident in our work - work which often lays the safe foundations for the development of sites.  

That is why here we worked with a specialist geochemist to produce a design we could place 100% confidence in.

Our phased treatment ensured that development could commence in key areas within 3 months. Within just 6 months all remedial objectives had been achieved, saving the client around £1.8 million. Through the reuse of material, accumulated throughout the project, our work was efficient and cost-effective for the client. By ensuring that less toxic soil ends up in landfill, being reused by our client’s customers instead, our work demonstrates projects can be both cost efficient and socially positive.