Remediation services offer all-round solutions in world-wide market to clean up polluted sites
The remediation of derelict and contaminated brownfield sites is at the top of the Government's agenda in for the regeneration of the nation's vast legacy of polluted sites. As the new regime requiring the identification and treatment of contaminated land comes into play, this special LAWE feature reports on technical advances that offer new options for remediation and gives examples of good practice in action and looks at the role of specialist in this often complex field.
The entire project cost £2.8 million and provided Biogenie with responsibility for overall project management, including, but not limited to: detailed project planning, the securing of all necessary permits, on-site project and subcontractor management, and verification reporting.
The scope of work included plant and services decommissioning, site remediation, civil engineering and landscaping work.
The decommissioning work involved the demolition of an office/ research building and associated concrete floor slab and footings, the removal and recycling of an aboveground pipeline, the removal and final disposal of asbestos-containing material, as well as the management and use of an old on-site landfill for the disposal of inert construction and site debris. Three diesel driven electricity generators required cleaning, transportation, dismantling and recycling after the PCB contaminated materials had been collected, sealed and disposed of at a licensed facility.
The site remediation involved excavation, segregation, containerisation (in custom-made 3.1 m³ steel containers), and transportation by container barge of 6,000 tonnes of hazardous PCB-contaminated soil (>50 ppm) to an off-site thermal treatment facility. Approximately 5,000 m³ of PCB-contaminated soil (<50 ppm) was disposed of to the on-site landfill and approximately Ex-situ Biopile treatment of 25,000 m³ of hydrocarbon-contaminated soil. The wastewater arising from the remedial operations was also treated on site, principally by an activated carbon absorption system.
The civil engineering and landscaping work saw the construction of access roads, an on-site 5,500 m³ capacity engineered landfill, the final preparation and construction of the landfill cover and supply, placement, and compaction of 15,000 m³ of graded fill material.
As main contractor Biogenie were responsible for preparing the site-specific
Health & Safety Plan, Emergency Response Plan, Personnel Exposure Monitoring
Programme and running the sub-contractor and visitor's induction seminars.