FiveRivers Environmental Contracting was commissioned by FUSION JV, on behalf of HS2, to carry out a feasibility assessment and the subsequent physical translocation of 0.43 hectares (4,300m²) of designated marshland habitat at a local wildlife site, to prevent its destruction during the construction of the HS2 high-speed rail line. This complex undertaking required precision, specialist equipment, and a commitment to long-term habitat sustainability.
Translocation
0.43ha of marshland translocated
Seeding
2084m2 of area surrounding the receptor site seeded with wildflower mix.
Project requirements
The Problem
The construction of the HS2 rail line posed a significant risk to a rare and sensitive marshland habitat. To ensure its protection, the habitat needed to be carefully translocated to a nearby receptor site with similar ecological conditions. This process required the successful relocation of the entire 4,300m² habitat without compromising its integrity, biodiversity, or ecological function.
Our approach
The Solution
FiveRivers executed the translocation under Schedule 17 and 33 consents, using bespoke equipment designed for minimal impact. We utilized low ground pressure excavators fitted with specialized turfing buckets to carefully cut and lift each turf in manageable 2m² turfs which were then transported by low ground pressure tracked dumpers to the receptor location. This method preserved the soil structure, root systems, and existing vegetation, crucial for habitat continuity.
To prevent damage to the sensitive donor and receptor sites, as well as the surrounding environment, all machinery movements were conducted on hardwood trackway. This approach minimized ground disturbance and reduced the risk of compaction and habitat degradation.
The receptor site was meticulously prepared by lowering the ground level to create a hydrologically suitable environment that could sustain marshland conditions. We also enhanced the receptor site’s ecological value by constructing ephemeral ponds and wildlife refugia, encouraging the establishment of diverse flora and fauna over time.
Project outcomes
The Results
The project was completed successfully within an eight-week period, on schedule and to a high standard. All available marshland was safely translocated, and the additional space created by the partial shrinkage of turfs was repurposed to create more ephemeral habitats. This proactive approach has increased the site’s biodiversity potential.
Ongoing monitoring and maintenance are integral to the long-term success of the translocation. Over the next 3-5 years, we will observe the habitat’s migration into the newly created ephemeral ponds. The translocation is supported by a 15-year maintenance regime to ensure the continued success and ecological functionality of the marshland habitat which FiveRivers are currently delivering on behalf of EKFB.
FiveRivers is proud to contribute to the protection of sensitive ecosystems while enabling critical infrastructure development. This project showcases our expertise in ecological contracting and demonstrates how innovative environmental solutions can support sustainable construction practices.
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Sam Whittall
Operations Manage
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Telephone: 01722 783 041
Email: sales@five-rivers.com
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