Our Work

Water

Baffle Wall Replacement

Due to the presence of Chrysolite Asbestos inside a drinking water contact tank, Stonbury were contracted to remove a contaminated baffle wall and it’s supporting steel structure. The wall was to be replaced with a new thermoplastic baffle curtain.
Environment

Weed Control

Hydrocotyle ranunculoides, commonly known as Floating Pennywort is a non-native invasive species that is spreading rapidly throughout canals and other watercourses. Capable of growing at around 20cm per day, Pennywort creates thick strands of vegetation, obstructs water flow and often out-competes native species. Pennywort can also increase the risk of flooding in some areas.
Water

Lagoon Repairs

As the main contractor for refurbishment works, a framework client required Stonbury to install a cofferdam system and carry out repairs to a settling tank at a water treatment works.
Wastewater

Inlet Chamber Reconstruction

Due to severe hydrogen sulphide attack, Stonbury were contracted to rebuild a failing inlet chamber at a wastewater treatment works (WWTW), this included the replacement of all defective rebars within the walls.
Water

Slow Sand Filter Repairs

Stonbury were contracted by a framework client to complete ingress repairs to five, 3m deep, slow sand filter wells, at a WTW (Water Treatment Works). One of the wells was a 100 year old structure.
Environment

Outfall Structure Repairs

Stonbury was contracted to carry out comprehensive repairs to an existing outfall structure situated on a lake in the South West. The original scope of works involved desilting around the outfall pipework, however, following an investigation, deep voids were identified within the dam structure.
Environment

Lake Restoration

Stonbury were approached by a private client to restore a neglected lake and its surrounding area. The lake had accumulated a considerable amount of silt build up and the grounds had become highly vegetated, offering no vehicular access and was prone to flooding.
Water

WTW Surge Vessel Replacement

Stonbury was contracted to supply a replacement surge vessel for a water treatment works site. The original vessel had failed the relevant pressure vessel insurance requirements and after inspection of the asset, evidence of coating delamination and corrosion was also found.
Wastewater

WWTW Roof Replacement

Due to water ingress into a high priority equipment building located on a waste water site, Stonbury were asked to complete a full inspection of the roof structure prior to recoating and waterproofing.
Wastewater

WWTW Tank Repairs

Following a non-destructive testing (NDT) survey at a WWTW, it was identified that major concrete repairs were required to five tanks, to ensure the plant could remain in use. However, the works could only be undertaken during a full plant closure.
Water

Service Reservoir Asbestos Removal

Stonbury were contracted by a framework client to return to a service reservoir that was initially taken out of service several years ago, after an inspection highlighted asbestos fibre contamination, due to a delaminating asbestos cement inlet main.
Environment

Flood Alleviation Scheme

A village in East Devon was subject to regular flood events due to the low capacity of the surrounding drainage ditches. Stonbury was contracted to complete a flood alleviation scheme at three locations around the village, protecting residential properties as part of a broader flood defence strategy.

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