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Esh-Stantec, working in partnership with Northumbrian Water, completed the Alum Waters Sewer Flooding Alleviation Scheme.
Due to a historic sewer flooding problem which was contaminating farm land, work was required to protect from sewer discharge which was previously blighted by hydraulic incapacity.
The scheme comprised the construction of a 3,200m3 storage tank which incorporates a low flow channel with a jet flow regulator fitted to limit pass forward flow rate.
A weir wall was located between lanes two and three of the storage tank to create 'wet' and 'dry' sides to the tank.
In dry weather operation and a proportion of typical year rainfall events, flows are confined to the 'wet' side, and only in larger rainfall events do flows spill into the 'dry' side.
This arrangement aims to reduce overall tank annual maintenance requirements by reducing the utilised storage in a typical year and subsequent siltation within the tank.
Esh-Stantec, working in partnership with Northumbrian Water, delivered the Fellgate Flood Alleviation Scheme.
Following over 175 properties suffering devastating flood damage, Esh-Stantec, South Tyneside Council and Northumbrian Water worked in partnership to increase flood protection to over 250 properties.
The scheme considered all flood risk issues on the Fellgate Estate and utilised sustainable drainage techniques in an innovative approach to flood risk management.
Phase one consisted of sewer upgrades in the estate and the installation of two large detention basins. The second phase included swales, bunds, attenuation basins and ponds.
Esh-Stantec, working in partnership with Northumbrian Water, delivered the Murton Flooding Scheme.
Split across two phases, works were undertaken to upsize the existing sewerage network.
Utilising innovative SUDS solutions, works comprised the installation of a pre-cast concrete storage tank and pipe installation.
Esh-Stantec, working in partnership with Northumbrian Water, designed a solution to alleviate the extensive flooding issue in The Broadway, Whitley Bay.
The solution provided additional capacity within the local drainage network and involved the construction of a new precast concrete storage tank and associated drainage.
Esh-Stantec, working in partnership with Northumbrian Water, completed emergency repairs at Page Bank.
The 30-inch South Derwent Trunk Main that crosses the River Wear had become exposed following river bank erosion after heavy rainfall.
Emergency repairs involved reshaping the river to redirect the flow, as well as the construction of a rock armour wall to form a new river embankment to protect against further erosion.
Works included; construction of a reinforced concrete slab over the Brancepeth Beck, installation of a 320m stone access road, construction of a concrete protection slab the water main and installation of temporary cofferdam.
Esh-Stantec, working in partnership with Northumbrian Water, was appointed to undertake 3 phases of work to manage surface water in the Killingworth and Longbenton areas of North Tyneside.
It was identified that 3,594 properties are considered at risk of flooding, with over 500 properties known to be affected.
Works comprised of SuDS measures being delivered at multiple sites, this involved the diversion of a designated main river and the provision of storage across multiple sites.
The team delivered a suitable and sustainable solution with a greater level of flood protection to properties and wider benefits to the community.
Following successful work on Phase 1 and 2 of the Killingworth and Longbenton Sustainable Surface Water Management scheme, Esh-Stantec, working in partnership with Northumbrian Water, was appointed to undertake Phase 3.
The third phase was at Killingworth Lake and involved the provision of storage and surface water separation. The seven-hectare lake holds the majority of surface water generated by Killingworth as well as providing a recreational open space in the town.
The scheme provided additional storage capacity within the lake of 3000m3 in the form of a flood storage basin created along the southern perimeter of the lake.
A new overflow weir was constructed on the lake edge, so when the water in the lake rises above a specified level, water spills over into the new detention basin which provides storage capacity.
The lake was disconnected from the combined and foul sewerage systems which was the previous arrangement, thus reducing the flood risk within the catchment.
The development also comprised ancillary works including new public footpaths, a new access off Southgate (the highway dissecting the lake), new fishing platforms, relocation of existing furniture/picnic tables, new public information signs, floating islands, bat and bird boxes and new wildflower bedding surrounding the lake.
Esh-Stantec, working in partnership with Northumbrian Water, was appointed to carry out works which involved the separation of Marden Quarry and other sources of surface water from the public sewer network.
Works undertaken included the installation of a 5m wide and 9m deep shaft and associated underground drainage.
This created a new surface water drain to separate out the existing flows from Marden Quarry pond from the combined sewer, therefore increasing the capacity and mitigating the flows from other systems.
Esh-Stantec, working in partnership with Northumbrian Water, was appointed as Framework Contractor on Whitburn Spills.
The £7.5m project was to improve the performance and resilience of the sewer network in the North Sunderland and South Tyneside areas.
Around 9,000 properties, including homes and businesses, were affected by our works.
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