Case Study


Clonminam Industrial, Estate Facility, Portlaoise

Client: ENVA Ireland LTD

Location:  Clonminam Industrial, Estate Facility, Portlaoise

Contract Value: £29,650

Dunton Environmental utilizes Bio-accelerator technology to rapidly treat soils heavily contaminated with hazardous levels of hydrocarbons to enable its disposal off site to an inert landfill facility.


  • At one of ENVA’s facilities there were 1,100 tons of contaminated soils that required treatment.
  • The initial level of mineral oil was between 6,000 mg/kg – 10,000 mg/kg. The target level to achieve was 500 mg/kg to enable its disposal off site at an inert landfill facility.


  • Dunton started the treatment of the contaminated soils and streamed, screened, batched, treated, tested and validated the material after completion.
  • Technology used by Dunton included Bio-accelerator and Regener8 and after 5 weeks the soils   concentrations were reduced to the site target levels.

Enva is a full-service and leading provider of recycling and resource recovery solutions, employing over 1100 people at locations across the United Kingdom and Ireland.


  • Soil diverted from hazardous landfill
  • 1,100 tonnes Hazardous material treated
  • Project was completed on time
  • Project was completed on budget
  • The PAH and TPH contamination levels were reduced to a level below the SSTL to be reused on site.

“Dunton are specialists in the remediation sector and have successfully delivered innovative solutions to overcome remediation challenges on a number of our developments past and present.”

Alex Vicary MRICS
Associate Director – Technical
Crest Strategic Projects