Background
This site was host to an oil-powered manufactured gas plant that operated from the 19th century until the mid 1950s and to a former rail freight terminal which was closed in the early 1990s. Phase I of the project involved the remediation of Diesel Range Organic (DRO)-contaminated soil resulting from locomotive refueling operations. As part of the construction of the Channel Tunnel Rail Link Stratford site in London’s suburb, 120,000 tons of DRO-contaminated soil was excavated and stockpiled for treatment. This site will be the location of a new international train station and form part of one of the largest urban redevelopment projects to be carried out in Europe. 

Solution
Biogenie proposed an ex situ Biopile process for the treatment of the DRO-contaminated soil. This on-site treatment solution significantly reduced the amount of contaminated material to be taken off site, resulting in cost and environmental savings associated with reduced trucking activities in an urban environment. The treatment process, carried out over a 16-week winter period, produced final DRO concentrations well below the reuse criteria of 2,000 mg/kg.
 

Services

• Characterization of 120,000 tons of contaminated soil;
• Design, construction and operation of an on-site ex situ Biopile process for the treatment of 120,000 tons of soil, lowering the initial average concentration of DROs from 5,677 mg/kg to a residual concentration of 568 mg/kg;
• Validation sampling;
• Production of reports.

« Back