Our work

Case studies of our projects across the UK.

Water
Wastewater
Environment

Large-scale reservoir refurbishment

We completed a major refurbishment project at a strategically important water treatment works, extending the lifespan – by over 10 years – of a critical asset whilst mitigating the need for a costly and carbon intensive new build alternative.

Storm tank installation

A 55 cubic metre sectional-steel storm tank with sustainable features was installed at a wastewater treatment site to comply with regulations to cut sewage overflows. The works significantly reduced running costs for our client and allowed them to meet specified carbon reduction targets while increasing stormwater capacity to help protect local waterways for decades to come.

Large-scale weir removal

We successfully opened 340 miles of catchment in the largest project of its kind – in the country – by removing a 70 meter wide, 900 year old medieval weir. Removing the weir significantly improved fish migration, spawning grounds and habitat. Fallen water levels have also allowed natural ecological processes to recommence.

Invertebrate surveys

Stonbury completed two invertebrate surveys on the River Avon to sample above and below discharge points, using a Yorkshire Pattern airlift pump.

Invasive species clearance

Stonbury was contacted by a local council regarding an on-line balancing pond that was built on the Moorgreen Stream, due to overgrowth of Typha latifolia (bulrush/reedmace) and the presence of the invasive non-native Hydrocotyle ranunculoides (floating pennywort) identified by the Environment Agency.

Silt removal

Stonbury were set to task by the Environment Agency to carefully remove silt from a section of channel in the River Brit.

Sluice gate and channel works

Stonbury was employed by the Environment Agency to complete refurbishments to a sluice gate and associated structures on the River Toe.

Hydrometric station asset maintenance

Following the successful completion of routine maintenance works at over forty-five hydrometric stations, Stonbury has been awarded several contracts to manage and carry out routine quarterly maintenance at over one hundred gauging sites across Wales.

Headwall replacement

Stonbury has been contracted by the Environment Agency to replace the headwalls on a storm water drainage pipe in an embankment that had become destabilised by natural erosion.

Habitat protection during reservoir repair

Stonbury was contracted to complete a repair to a crack in a reservoir roof located within a Site of Special Scientific Interest (SSSI) containing the protected plant species Hairy Mallow.

Sluice gate release

Early contractor involvement resulted in a timely and cost-effective solution for a seized sluice gate that was causing uncontrolled flows.

Flume weir repair & refurbishment

Stonbury was contracted to carry out repair works to a flume weir which had failed due to a leak around the wing wall. The leak had eroded the bank to such an extent that a large void had formed.

Steel bridge fabrication & installation

Stonbury was commissioned by the Environment Agency to design, fabricate and install a new steel footbridge over the river at Iwood Gauging Station.

Flood bank slippage repair

Stonbury was called in by the Environment Agency to solve a challenging problem. A mud flood bank on the River Avon at Pill had slipped, threatening the integrity of residential flats that were situated alongside a stretch of the tidal reach. The void had to be infilled with stone on a geotextile base to re-establish the integrity of the bank, however, access to the site proved to be quite a challenge.

Steel bridge refurbishment

Stonbury were commissioned by a local council for the refurbishment of three redundant railway bridges that form part of the Whistle Way Walkway at Narborough.

Stepped access design, fabrication & installation

A client asked Stonbury to stabilise the banks at a monitoring station on the River Isbourne to improve the safety of the access to the river bank.

Storage lagoon construction

Stonbury recently completed the construction of a new storage lagoon in East Yorkshire.

Storm lake refurbishment

Stonbury was enlisted to undertake various works to refurbish a storm lake, including flood alleviation, access improvements and and concrete repairs to the inside of the lake wall.

Emergency bank stabilisation works

Stonbury delivered emergency bank stabilisation works as part of a new River Restoration Framework in the north of England.

Get in touch with our expert team

01234 750924

connect@stonbury.co.uk