PetroFix Permeable Reactive Barrier Prevents Offsite Risk at Active Gas Station

Case study highlights:

• Groundwater samples taken post-application demonstrated that all remedial objectives had been met
• PetroFix IPRB was the most sustainable option for the site
• Application completed at a significantly lower cost and in less time than pump and treat

This case study reviews an active gas station in the United Kingdom where dissolved phase contamination at high concentrations in groundwater migrated beyond the site boundary, resulting in a potential off-site liability. An in situ permeable reactive barrier (IPRB) using PetroFix colloidal activated carbon was installed to prevent offsite risk. Environmental consulting firm SLR Consulting partnered with REGENESIS to design and apply the solution, which met site objectives within 12 months. The PetroFix IPRB was the most sustainable option for the site; compared to a source excavation approach, the project prevented up to 55 loads of soil disposal. Substantial energy savings were also made when compared with operating a groundwater pump and treat system. The project was completed for <£100K ($127,300 USD), with only minimal disruption to site operations.