Background
Heavily contaminated soil was a legacy of colliery and cokeworks activities carried out on this nine-hectare site located in Barnsley. Remediation of this site is part of Yorkshire Forward’s Coalfield Regeneration Programme whose objective is the redevelopment of brownfield sites in the region. As part of the redevelopment project for this site, eight hectares of land will be dedicated to industrial activities. The remaining hectare will be transformed into a wetland to encourage sustainable habitats for local flora and fauna.

Solution
Following excavation, contaminated soil was treated on site with Biogenie’s proprietary ex situ Biopile process. Severe rainfall slowed the soil excavation and placement operations and greatly increased soil moisture content. However, as treatment was carried out in a closed system, it was not affected by the prevailing heavy rains nor other climatic conditions. Two-metre high Biopiles were formed, thus allowing all the contaminated soil to be treated at one time and considerably reducing movement of soil throughout the site. As a result, only a small "footprint" was required and other earthwork operations for site redevelopment could continue without interruption. Biogenie provided a performance guarantee by carrying out soil treatment on a lump-sum basis.


SERVICES

• Ex situ Biopile treatment of 18,000 m3 of soil impacted with polycyclic aromatic hydrocarbons (up to 30,000 mg/kg), phenols, as well as a variety of both heavy and light oils;
• Recycling of treated soil as backfill on the site.

This project is an example of Biogenie’s ability to provide guaranteed remedial solutions.
 

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