Background
Processing sugar beet over a period of 50 years had left this 55-hectare site partially covered with approximately 450,000 m3 of beet washing residue known as “factory” soil. As this soil was rich in organic matter and contained elevated concentrations of ammonia, it was producing substantial amounts of methane. Biogenie was invited to provide a remedial solution with the objective of reducing the high biochemical methane potential of the soils in order that the property be suitable for future residential use.
 

Solution
As an environmental consultant and specialised remedial contractor, Biogenie first characterised the site and impacted material prior to evaluating the various treatment options. Detailed 3D mapping of the first 10 metres of the sub-surface soil was critical to accurately locate the impacted soils and determine the optimum soil excavation plan and management programme. On the basis of our treatability study results, field trial findings and 3D mapping of the site, Biogenie proposed a guaranteed remedial solution based on civil engineering soil processing techniques. Overall, Biogenie supervised the excavation, haulage and processing of 570,000 m3 of soil.

This practical solution, designed and implemented by Biogenie, provided our client with over £2.5 M in cost savings and was completed within the proposed time schedule and budget. The first phase of the redevelopment project, comprised the construction of 900 houses, a school and community centre.
 

Services

• Characterisation of impacted material to determine its precise nature;
• Treatability study to evaluate treatment options, including bioremediation;
• 3D mapping of 475,000 m3 of soil in order to gain a comprehensive understanding of the site;
• Development and field trial of civil engineering soil processing techniques;
• Detailed design of the remedial solution;
• Supervision of earthworks along with the validation and monitoring of soil processing techniques.

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