Stover Lake, lying at the heart of Stover Country Park on the edge of Dartmoor National Park, had once been known as a great place to find lilies and invertebrate diversity. However, over the last few decades that biodiversity has been in slow decline, in no small part due to the contaminated silt in the run-off from the adjacent A38.
The impacts of that contamination were evident from the water assessments carried out, but also visually from the disappearance of those famous lilies.
A number of works were undertaken to help with the remediation of this problem. Drainage was realigned, with the installation of line silt traps, oil interceptors, pollution control valves and reed beds that reduce silt, oil and soluble metals.
The work was done through extensive collaboration, including with; Highways England, Devon County Council, South West Highways, Natural England and Rangers at Stover Country Park.
This all helped to reduce the contamination from the A38 outfalls. The reed beds naturally slowed the water flow and removed contaminants. The installation of wetland provided some much-needed habitat for aquatic and bird species. Wildflower meadows were also created and have established with an obvious benefit to pollinating species. Several bird and bat boxes were also installed. All of the measures have ensured long-term biodiversity net gain.
The project was also recently a double winner at the ICE southwest awards, where it won Project Under £3m and the Judges Special Award
" Well done to everyone who has worked on this project. A great example of the wonderful work delivered through this contract. "General Manager Southwest DSC
Kier was employed to carry out in-river works to restore the natural channel over a 75m stretch of the River Camel. This included removal of an old weir and artificial bank reinforcement which are an impediment to the natural function of the river and introduction of large woody debris into the channel to modify flows and create habitat opportunity.
Christ the Word is a much-needed through school for pupils from 3-16-years-old and we were appointed to deliver the new BREEAM Excellent project, as well as demolish the existing schools, all whilst working in a live environment.
The Southern Strategic Support Main (SSSM) is a new 31km water pipeline and has been created to help improve the water supply to 280,000 houses and support the growing local population. The pipeline passes through open countryside, towns and villages providing the opportunity for both biodiversity enhancement and community engagement.