Working collaboratively with our clients on flood protection, asset repair and more. Saltburn Gill Mine Water Treatment Scheme We have constructed a number of new mine water treatment works, including this one, at Saltburn Gill for our client The Coal Authority. Whitburn Sea Outfall We also construct sea outfalls for The Coal Authority, including this design and build project at Whitburn in the North East of England. Back Next About us Introducing JN Bentley Vision and values Publications Built in 1987 in response to severe flooding five years earlier, the Foss Barrier forms an important part of the flood defences of York. A gate can be closed to prevent rising waters in the River Ouse from backing up into the River Foss and flooding parts of the city. In December 2015 floods hit York once again, with waters rising into the electrical switch room for the incoming mains supply, rendering it inoperable. After significant involvement in the emergency response to the floods we were then engaged by the EA to deliver permanent upgrade works on site. At the core of these works is an upgrade to the Foss Barrier Pumping Station where we are increasing the capacity of the pumping station through the installation of eight new pumps and associated MEICA equipment. Each pump weighs 6.5 tonnes and is capable of pumping 6m³/second. The upgraded equipment will be housed within an extension to the existing building that will lift all critical equipment above the flood zone. To facilitate this, all equipment has been temporarily located on a purpose built platform. Foss Barrier Built in 1987 in response to severe flooding five years earlier, the Foss Barrier forms an important part of the flood defences of York. A gate can be closed to prevent rising waters in the River Ouse from backing up into the River Foss and flooding parts of the city. In December 2015 floods hit York once again, with waters rising into the electrical switch room for the incoming mains supply, rendering it inoperable. After significant involvement in the emergency response to the floods we were then engaged by the EA to deliver permanent upgrade works on site. At the core of these works is an upgrade to the Foss Barrier Pumping Station where we are increasing the capacity of the pumping station through the installation of eight new pumps and associated MEICA equipment. Each pump weighs 6.5 tonnes and is capable of pumping 6m³/second. The upgraded equipment will be housed within an extension to the existing building that will lift all critical equipment above the flood zone. To facilitate this, all equipment has been temporarily located on a purpose built platform. Foss Barrier We constructed a mine water treatment works at Saltburn Gill in the North East of England to stop untreated iron stone mine water from being discharged into the natural environment. Ochre deposits were polluting 2km of watercourse, generating large ‘ochre aprons’ on the slopes of the tributary and directly preventing salmon migration, as well as threatening 1km of Saltburn beach. The works were delivered in two phases, and comprised of the construction of four settlement ponds; each with pre-cast concrete inlet, outlet and aeration cascade structures; together with a sludge drying bed and new wetland. Saltburn Gill We constructed a mine water treatment works at Saltburn Gill in the North East of England to stop untreated iron stone mine water from being discharged into the natural environment. Ochre deposits were polluting 2km of watercourse, generating large ‘ochre aprons’ on the slopes of the tributary and directly preventing salmon migration, as well as threatening 1km of Saltburn beach. The works were delivered in two phases, and comprised of the construction of four settlement ponds; each with pre-cast concrete inlet, outlet and aeration cascade structures; together with a sludge drying bed and new wetland. Saltburn Gill The first scheme we have delivered under the Coal Authority’s design and build Confluence’ framework was in the North East of England, at Whitburn Sea Outfall. A solution was required to reduce and maintain water levels by pumping from a nearby mine via a borehole to the sea. A successful test phase proved the validity of the solution – the installation of a 450m-long outfall from the mine shaft to a point 150m out at sea. To install the pipework in fragmented limestone (a rock-type susceptible to collapse), instead of drilling and then lining the void before pulling the main pipework back through, our solution saw the casing itself become the outfall pipe. Whitburn Sea Outfall The first scheme we have delivered under the Coal Authority’s design and build Confluence’ framework was in the North East of England, at Whitburn Sea Outfall. A solution was required to reduce and maintain water levels by pumping from a nearby mine via a borehole to the sea. A successful test phase proved the validity of the solution – the installation of a 450m-long outfall from the mine shaft to a point 150m out at sea. To install the pipework in fragmented limestone (a rock-type susceptible to collapse), instead of drilling and then lining the void before pulling the main pipework back through, our solution saw the casing itself become the outfall pipe. Whitburn Sea Outfall A significant number of our schemes involve working with clients such as the EA to implement preventative measures to guard against issues such as flooding. A tidal surge in early December 2013 caused widespread disruption along the East Coast, with many properties flooded and extensive erosion of coastal areas. The surge entered the Humber and associated rivers, filling the River Ouse and then entering the Dutch River. Having identified the unstable banking on this stretch of river, delivered a three-phase scheme to reduce the risk of flooding to surrounding areas and properties at times of high tides. The solution has seen us construct a permanent flood defence using a combination of sheet and continuous flight auger (CFA) piling, steel tendons and rock armour to reinforce the embankment. Over £1m was invested in the temporary works at Chantry Cottages, including 25,000 tonnes of stone used for ramps and piling platforms, some of which has since been reused on other schemes. These temporary works were crucial in enabling the permanent works to be delivered safely. Chantry Cottages A significant number of our schemes involve working with clients such as the EA to implement preventative measures to guard against issues such as flooding. A tidal surge in early December 2013 caused widespread disruption along the East Coast, with many properties flooded and extensive erosion of coastal areas. The surge entered the Humber and associated rivers, filling the River Ouse and then entering the Dutch River. Having identified the unstable banking on this stretch of river, delivered a three-phase scheme to reduce the risk of flooding to surrounding areas and properties at times of high tides. The solution has seen us construct a permanent flood defence using a combination of sheet and continuous flight auger (CFA) piling, steel tendons and rock armour to reinforce the embankment. Over £1m was invested in the temporary works at Chantry Cottages, including 25,000 tonnes of stone used for ramps and piling platforms, some of which has since been reused on other schemes. These temporary works were crucial in enabling the permanent works to be delivered safely. Chantry Cottages In 2016, the EA awarded us an extension to our Asset Repair Programme of Works (ARPW), taking it through to October 2018. The extension is reward for the hard work and dedication of the teams involved in the framework since its inception in October 2014. They have developed great relationships with the client, delivering safe, efficient and sustainable solutions across a large geographical area. The ARPW is largely focused on improving the condition of flood defences that protect properties, critical infrastructure and prime agricultural land from both fluvial and tidal flooding. Both teamwork and leadership have been essential to the successful delivery of a challenging programme. Key too has been the streamlining and pooling of construction activities and resources, driving a reduction in costs, delivery duration and carbon footprint. Our team is pictured here picking up a Team Achievement Commendation at the ICE East Midlands Awards. Asset Recovery Programme of Works In 2016, the EA awarded us an extension to our Asset Repair Programme of Works (ARPW), taking it through to October 2018. The extension is reward for the hard work and dedication of the teams involved in the framework since its inception in October 2014. They have developed great relationships with the client, delivering safe, efficient and sustainable solutions across a large geographical area. The ARPW is largely focused on improving the condition of flood defences that protect properties, critical infrastructure and prime agricultural land from both fluvial and tidal flooding. Both teamwork and leadership have been essential to the successful delivery of a challenging programme. Key too has been the streamlining and pooling of construction activities and resources, driving a reduction in costs, delivery duration and carbon footprint. Our team is pictured here picking up a Team Achievement Commendation at the ICE East Midlands Awards. Asset Recovery Programme of Works The Coal Authority has a responsibility to treat mine water before it is discharged into the natural environment. One way of achieving this is to use a passive mine water treatment scheme. The scheme at Craig yr Aber, near Bridgend in Wales, involved the construction of two settlement ponds, two wetlands and two drying beds. These features remove iron from the water in an entirely ‘passive’ way – no chemicals are required to assist the process. Saturated ground conditions led the project team to use innovative bales made of recycled tyres to engineer the embankments on site. Craig Yr Aber The Coal Authority has a responsibility to treat mine water before it is discharged into the natural environment. One way of achieving this is to use a passive mine water treatment scheme. The scheme at Craig yr Aber, near Bridgend in Wales, involved the construction of two settlement ponds, two wetlands and two drying beds. These features remove iron from the water in an entirely ‘passive’ way – no chemicals are required to assist the process. Saturated ground conditions led the project team to use innovative bales made of recycled tyres to engineer the embankments on site. Craig Yr Aber Our scheme at Reedness is one of our Asset Recovery Programme of Works (ARPW) projects with The Environment Agency (see below). We raised flood defences to provide long-term protection to the area. Based over a 3.3km stretch of land, to meet the programme we undertook work on several fronts at any one time. We estimated a total of 8,000 wagon movements throughout the scheme and, with the villages of Reedness and Swinefleet nearby, we took steps to minimise disruption. Site teams engaged proactively with the community to alleviate concerns, making house calls and even holding an assembly at the local primary school. Reedness Our scheme at Reedness is one of our Asset Recovery Programme of Works (ARPW) projects with The Environment Agency (see below). We raised flood defences to provide long-term protection to the area. Based over a 3.3km stretch of land, to meet the programme we undertook work on several fronts at any one time. We estimated a total of 8,000 wagon movements throughout the scheme and, with the villages of Reedness and Swinefleet nearby, we took steps to minimise disruption. Site teams engaged proactively with the community to alleviate concerns, making house calls and even holding an assembly at the local primary school. Reedness Repeat business is the recognition that we’re looking for - but it’s nice to pick up an award or two along the way. Awards ABOUT JN Bentley Ltd is part of the global management, engineering and development consultancy Mott MacDonald, offering our clients full feasibility, design and construction services throughout the UK. Who we are ABOUT We integrate inclusion and belonging, professional and personal development, and health and wellbeing into our business culture. People OUR APPROACH Our aim is to reduce water consumption, minimise our waste, and use energy efficiently. Preserving resources OUR APPROACH We must deliver quality solutions in a cost and efficient way. Doing so ensures we add value for our clients and continue to thrive as an organisation. How do we achieve this? Through our Quality, Cost & Efficiency Strategy. Quality, cost and efficiency OUR APPROACH This is an overview of digital in JN Bentley, including our investment in digital delivery and our company digital transformation and how it is embedded in everything we do. Digital delivery OUR APPROACH The majority of our work in the environmental engineering sector is delivered through JBA Bentley, an integrated design and build contractor that specialises in the safe and efficient delivery of low carbon solutions. JBA Bentley’s mission is simple – the company uses its ingenuity and expertise to develop and deliver sustainable low carbon solutions that make a positive difference to our clients and our communities. JBA Bentley was formed back in 2013 when JBA Consulting – one of Europe’s leading specialists in environmental engineering and management – joined forces with national civil engineering contractor JN Bentley. Its first client was the Environment Agency (EA); in the years since, JBA Bentley has established itself as a highly reputable framework supplier to the EA as part of their Water and Environmental Management (WEM), Marine and Coastal (MCF), and Flood and Coastal Erosion Risk Management (FCERM) Central Hub frameworks. As JN Bentley and more recently JBA Bentley, we have also worked with the Coal Authority since 2004. Projects have predominantly involved the delivery of projects that treat water discharged from abandoned mines across the UK. We work at not only traditional coal mines, but metal mines too. We have wide experience of land drainage works for the Internal Drainage Boards and have constructed surface water storage systems and pumping stations. We have also applied sustainable urban drainage (SuDS) techniques to our projects in areas of hardstanding with our commercial clients. Environment Throughout the history of JN Bentley, much of our work has been associated with water and the water environment through work with water companies, local authorities, the Coal Authority and more recently, the Environment Agency. Learn more about JBA Bentley Publications Our heritage Our policies Awards Who we are > Ethics Vision and values > About us Supply chain Add paragraph text. Click “Edit Text” to update the font, size and more. To change and reuse text themes, go to Site Styles. Close Supply chain Add paragraph text. Click “Edit Text” to update the font, size and more. To change and reuse text themes, go to Site Styles. FEATURED NEWS ARTICLE Close News View all Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading...

Explore JN Bentley's commitment to renewables. Driving innovation in sustainable energy solutions for a greener future Linton Falls Hydro We constructed a 120kW twin hydro turbine, on a small weir at Linton Falls on the River Wharf within the Yorkshire Dales National Park, bringing the asset back to life for the first time since 1948. Low Wood Hydro We installed two new Archimedean screw turbines as part of the refurbishment of the hydroelectric plant at the historic Low Wood Gunpowder Works within the scenic Lake District National Park. Tees Barrage We redeveloped this white water course to create a world-class training facility used in the 2012 Olympic Games. The project, at the time, was the only installation where Archimedean screws were used as both pumps and generators. Back Next About us Introducing JN Bentley Vision and values Publications JN Bentley constructed a 120kW hydro turbine, on land owned by the business on a small weir at Linton Falls on the River Wharf, near Grassington in the Yorkshire Dales National Park. The original Linton Falls plant was built in 1909 bringing the first electricity to the village of Grassington, but was left out of commission since 1948, and has been protected as a Scheduled Monument. The construction project reinstated a hydro-electricity facility, incorporating two Archimedean screw turbines, to once again supply the Grassington area by feeding locally into the Grid. Linton Falls Hydro JN Bentley constructed a 120kW hydro turbine, on land owned by the business on a small weir at Linton Falls on the River Wharf, near Grassington in the Yorkshire Dales National Park. The original Linton Falls plant was built in 1909 bringing the first electricity to the village of Grassington, but was left out of commission since 1948, and has been protected as a Scheduled Monument. The construction project reinstated a hydro-electricity facility, incorporating two Archimedean screw turbines, to once again supply the Grassington area by feeding locally into the Grid. Linton Falls Hydro The project, located at the historical Low Wood Gunpowder Works within the scenic Lake District National Park, comprised of the refurbishment of the hydroelectricity plant. The works, which were on an English Heritage Scheduled Monument status site, required new intake sluice gates, the construction of an access bridge, the demolition of the existing power house and construction of a new power house, installation of rock armour and gabions to the tailrace and all preparatory work to allow the installation of the two new Archimedean screw turbines and associated equipment by Spaans Babcock. Low Wood Hydro The project, located at the historical Low Wood Gunpowder Works within the scenic Lake District National Park, comprised of the refurbishment of the hydroelectricity plant. The works, which were on an English Heritage Scheduled Monument status site, required new intake sluice gates, the construction of an access bridge, the demolition of the existing power house and construction of a new power house, installation of rock armour and gabions to the tailrace and all preparatory work to allow the installation of the two new Archimedean screw turbines and associated equipment by Spaans Babcock. Low Wood Hydro The course is located on the River Tees adjacent to the Tees Barrage. The project comprised a redevelopment of the course to create a world-class white water facility. The project at the time was the only installation in the world where Archimedean screws were used as both pumps and generators. The screws were particularly large, delivering a maximum flow rate of 14m3/s. Further elements included the design and construction of the new RC pumping station, construction of associated penstocks, stop logs and a fish pass; raising of concrete channel walls; excavation and construction of a new, steeper ‘short course’. Tees Barrage The course is located on the River Tees adjacent to the Tees Barrage. The project comprised a redevelopment of the course to create a world-class white water facility. The project at the time was the only installation in the world where Archimedean screws were used as both pumps and generators. The screws were particularly large, delivering a maximum flow rate of 14m3/s. Further elements included the design and construction of the new RC pumping station, construction of associated penstocks, stop logs and a fish pass; raising of concrete channel walls; excavation and construction of a new, steeper ‘short course’. Tees Barrage As part of an overall upgrade to the treatment works at Esholt, we designed and managed the installation of two hydrodynamic screws. The hydropower installation utilises the 10m head drop between the inlet works and the new primary tanks, with the power generated assisting in meeting the base load of the new activated sludge secondary treatment plant. We were responsible for construction of the inlet chamber, and plinths for the 2.6m diameter screws and oversaw the subcontracted hydropower and electrical works. Esholt WwTW As part of an overall upgrade to the treatment works at Esholt, we designed and managed the installation of two hydrodynamic screws. The hydropower installation utilises the 10m head drop between the inlet works and the new primary tanks, with the power generated assisting in meeting the base load of the new activated sludge secondary treatment plant. We were responsible for construction of the inlet chamber, and plinths for the 2.6m diameter screws and oversaw the subcontracted hydropower and electrical works. Esholt WwTW Working collaboratively with the client, we delivered a hydroelectric generation facility within Eccup Water Treatment Works (WTW), situated near Leeds, West Yorkshire. We also worked in partnership with suppliers to develop, install and commission a horizontally mounted Francis turbine with asynchronous generator in a new ‘hydro-turbine building’, upstream of Eccup WTW inlet works. The installation is fully integrated with the previously existing operation of the inlet works for ease of operation, to enable generation of up to 700MWh of electricity per annum. Eccup Hydro Working collaboratively with the client, we delivered a hydroelectric generation facility within Eccup Water Treatment Works (WTW), situated near Leeds, West Yorkshire. We also worked in partnership with suppliers to develop, install and commission a horizontally mounted Francis turbine with asynchronous generator in a new ‘hydro-turbine building’, upstream of Eccup WTW inlet works. The installation is fully integrated with the previously existing operation of the inlet works for ease of operation, to enable generation of up to 700MWh of electricity per annum. Eccup Hydro At Grmwith, water is released to river from the reservoir for abstraction downstream. Energy was being lost and offered an opportunity for energy recovery/generation from a turbine. The project comprised of the installation of a 250kW Francis Turbine within an existing chamber at Grimwith Reservoir, recovering energy from the water before it is discharged. The scope of work included the supply and installation of the turbine; modifications to the existing chamber; new 800mm diameter flowmeter to measure and record turbine flows; modification to pipework and valves; electrical installation and SCADA modifications. Grimwith At Grmwith, water is released to river from the reservoir for abstraction downstream. Energy was being lost and offered an opportunity for energy recovery/generation from a turbine. The project comprised of the installation of a 250kW Francis Turbine within an existing chamber at Grimwith Reservoir, recovering energy from the water before it is discharged. The scope of work included the supply and installation of the turbine; modifications to the existing chamber; new 800mm diameter flowmeter to measure and record turbine flows; modification to pipework and valves; electrical installation and SCADA modifications. Grimwith Repeat business is the recognition that we’re looking for - but it’s nice to pick up an award or two along the way. Awards ABOUT JN Bentley Ltd is part of the global management, engineering and development consultancy Mott MacDonald, offering our clients full feasibility, design and construction services throughout the UK. Who we are ABOUT We integrate inclusion and belonging, professional and personal development, and health and wellbeing into our business culture. People OUR APPROACH Our aim is to reduce water consumption, minimise our waste, and use energy efficiently. Preserving resources OUR APPROACH We must deliver quality solutions in a cost and efficient way. Doing so ensures we add value for our clients and continue to thrive as an organisation. How do we achieve this? Through our Quality, Cost & Efficiency Strategy. Quality, cost and efficiency OUR APPROACH This is an overview of digital in JN Bentley, including our investment in digital delivery and our company digital transformation and how it is embedded in everything we do. Digital delivery OUR APPROACH Our team brings together the full expertise that we can offer in process, mechanical and electrical engineering and programme management, with support as required from the wider organisation. JN Bentley is privileged to have worked with some prestigious hydropower clients such as Northumbrian Water, British Waterways and The Small Hydro Company, undertaking hydroturbine design, refurbishment and installations waste water screw generators, clean water generators and combined heat and power (CHP) systems. We have also established some important supply chain relationships in the renewable energy market to help us deliver our hydropower schemes, including collaborative working agreements with the likes of Spaans Babcock and Zeropex. Renewables JN Bentley’s move into renewable energy, particularly the hydropower market, was a natural progression from the expertise gained over many years with our water sector clients and from other environmental projects. Publications Our heritage Our policies Awards Who we are > Ethics Vision and values > About us Supply chain Add paragraph text. Click “Edit Text” to update the font, size and more. To change and reuse text themes, go to Site Styles. Close Supply chain Add paragraph text. Click “Edit Text” to update the font, size and more. To change and reuse text themes, go to Site Styles. FEATURED NEWS ARTICLE Close News View all Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading...

Explore JN Bentley's expertise in the water and wastewater sector. Delivering innovative solutions for sustainable water management and infrastructure Blackpool In Blackpool we are helping improve the bathing water quality by increasing the capacity of the sewerage network and reducing the volume of surface water entering the sewer system. Whitlingham Cake Reception At Whitlingham we drove a number of savings, including the reuse of material used for the temporary works within the permanent works as sub-base for the structures and access roads. Jacksons Edge Service Reservoir 126 concrete wall units, 132 beams, 120 columns and 400 roof slabs were all pre-cast in factory conditions away from Jacksons Edge before being delivered to site and carefully crane-lifted into place. Back Next About us Introducing JN Bentley Vision and values Publications We delivered a £34m project to upgrade Hull WwTW – a site serving a population equivalent of 1 million people. We constructed a new elevated inlet works for the preliminary treatment of raw sewage, new liquid import, cake import and rewetting, and dewatering facilities, plus refurbished the existing sludge treatment facility (STF). The new dedicated flow to full treatment inlet works comprised elevated coarse screens, grit removal and fine screens, a return liquors pumping station and new odour control plant. To eliminate the need for high-level temporary works and to expedite construction, we incorporated the temporary works into the permanent works design. The STF refurbishment was undertaken whilst maintaining full treatment capacity, which required a phased approach to delivery, further restricted by high seasonal summer loading and high winter energy demand. Hull Wastewater Treatment Works We delivered a £34m project to upgrade Hull WwTW – a site serving a population equivalent of 1 million people. We constructed a new elevated inlet works for the preliminary treatment of raw sewage, new liquid import, cake import and rewetting, and dewatering facilities, plus refurbished the existing sludge treatment facility (STF). The new dedicated flow to full treatment inlet works comprised elevated coarse screens, grit removal and fine screens, a return liquors pumping station and new odour control plant. To eliminate the need for high-level temporary works and to expedite construction, we incorporated the temporary works into the permanent works design. The STF refurbishment was undertaken whilst maintaining full treatment capacity, which required a phased approach to delivery, further restricted by high seasonal summer loading and high winter energy demand. Hull Wastewater Treatment Works Our adoption of nature-based solutions (NBS) continues to grow as we realise the economic, environmental and social benefits of utilising natural processes to tackle our clients’ challenges. Nature-based solutions are interventions that work with nature to sequester carbon, enhance biodiversity and improve resilience to the effects of extreme weather – ranging from constructed treatment wetlands for nutrient removal to sustainable drainage systems for flood alleviation. Witches Oak is a great example. This ground-breaking scheme is bringing an abandoned water resource back into use to improve the resilience of drinking water supplies during future droughts. Our solution includes the construction of floating treatment wetlands that provide the first stage of the treatment process. Nature-based solutions Our adoption of nature-based solutions (NBS) continues to grow as we realise the economic, environmental and social benefits of utilising natural processes to tackle our clients’ challenges. Nature-based solutions are interventions that work with nature to sequester carbon, enhance biodiversity and improve resilience to the effects of extreme weather – ranging from constructed treatment wetlands for nutrient removal to sustainable drainage systems for flood alleviation. Witches Oak is a great example. This ground-breaking scheme is bringing an abandoned water resource back into use to improve the resilience of drinking water supplies during future droughts. Our solution includes the construction of floating treatment wetlands that provide the first stage of the treatment process. Nature-based solutions We delivered a high-profile project replacing a 2.5km section of the Haweswater Aqueduct – the backbone of United Utilities’ network supplying water to 2.5 million customers every day. The project, praised for connecting the new pipes during a shutdown of less than eight days, scooped the Pipeline Industries Guild Utility Project of the Year Award, was highly commended in the British Construction Industry Awards, a finalist at NCE TechFest Awards for Best Use of Technology: Site Productivity and shortlisted at the Ground Engineering Awards in the Sustainability category. Read more on Water Projects Online. Hallbank Tunnel We delivered a high-profile project replacing a 2.5km section of the Haweswater Aqueduct – the backbone of United Utilities’ network supplying water to 2.5 million customers every day. The project, praised for connecting the new pipes during a shutdown of less than eight days, scooped the Pipeline Industries Guild Utility Project of the Year Award, was highly commended in the British Construction Industry Awards, a finalist at NCE TechFest Awards for Best Use of Technology: Site Productivity and shortlisted at the Ground Engineering Awards in the Sustainability category. Read more on Water Projects Online. Hallbank Tunnel A dam safety programme across the whole of Wales capitalised on our extensive reservoir experience. Projects varied in scope and scale but all ultimately ensured our client was left with upgraded assets that meet stringent legal requirements. We increased scour capacity at Llandegfedd so that the reservoir can be lowered faster should there be an emergency. Our solution utilised the existing infrastructure, installing three sets of twin valves to the tower and coring directly into the overflow shaft. Together with costing just 20% of a traditional siphon solution, this methodology reduced carbon by 80%. Complex scaffolding was required to facilitate safe working over water. Access was suspended from the top of the tower as each 1.5t valve was transferred by barge ready for lifting into position. We constructed a new spillway at Lluest Wen that followed the alignment of the old one to minimise future maintenance requirements. Working three miles from the nearest surfaced road and around 1400ft above sea level, the new spillway required installation of reinforced concrete on gradients up to 1:2 and with some walls 6m high. CFD analysis identified that forces on the walls were less than for a typical spillway wall, allowing us to optimise the wall design by making them slimmer with a lower reinforcement density. This significantly reduced the quantity of concrete and reinforcement needed, as well as subcontract and labour costs. Reservoir safety in Wales A dam safety programme across the whole of Wales capitalised on our extensive reservoir experience. Projects varied in scope and scale but all ultimately ensured our client was left with upgraded assets that meet stringent legal requirements. We increased scour capacity at Llandegfedd so that the reservoir can be lowered faster should there be an emergency. Our solution utilised the existing infrastructure, installing three sets of twin valves to the tower and coring directly into the overflow shaft. Together with costing just 20% of a traditional siphon solution, this methodology reduced carbon by 80%. Complex scaffolding was required to facilitate safe working over water. Access was suspended from the top of the tower as each 1.5t valve was transferred by barge ready for lifting into position. We constructed a new spillway at Lluest Wen that followed the alignment of the old one to minimise future maintenance requirements. Working three miles from the nearest surfaced road and around 1400ft above sea level, the new spillway required installation of reinforced concrete on gradients up to 1:2 and with some walls 6m high. CFD analysis identified that forces on the walls were less than for a typical spillway wall, allowing us to optimise the wall design by making them slimmer with a lower reinforcement density. This significantly reduced the quantity of concrete and reinforcement needed, as well as subcontract and labour costs. Reservoir safety in Wales One of the largest schemes in our history saw us complete the design and build of a new £45m advanced anaerobic digester (AAD) facility at Stoke Bardolph Sewage Treatment Works. The facility turns sewage into biogas that is exported to the gas network and treats remaining solids so they can be used as high-grade fertiliser. To achieve an ambitious programme of contract award to completion in just two years, the project championed DfMA, digital and innovative solutions. This included a productivity saving of 26 weeks made by manufacturing, assembling and testing the steam generating boiler house off site. Read more on Water Projects Online. Stoke Bardolph Advanced Anaerobic Digestion One of the largest schemes in our history saw us complete the design and build of a new £45m advanced anaerobic digester (AAD) facility at Stoke Bardolph Sewage Treatment Works. The facility turns sewage into biogas that is exported to the gas network and treats remaining solids so they can be used as high-grade fertiliser. To achieve an ambitious programme of contract award to completion in just two years, the project championed DfMA, digital and innovative solutions. This included a productivity saving of 26 weeks made by manufacturing, assembling and testing the steam generating boiler house off site. Read more on Water Projects Online. Stoke Bardolph Advanced Anaerobic Digestion Upgrades to a major water treatment works in the north west of England are maximising its output, reducing the average ‘unit cost to treat’ to make it the most cost-effective water treatment asset in the area. The project saw us improve several key treatment processes through the installation of new rapid gravity filters (RGFs), lamella clarifiers and flocculation tanks, and upgrades to the pH correction system. Digital innovation was at the forefront of project delivery. The use of BIM 360, extended reality, the latest hand held scanning technology, intelligent machine control and digital inspection and test records helped to foster collaboration, improve safety and drive efficiencies throughout the project. Learn more on Water Projects Online. North West Water Treatment Works Upgrade Upgrades to a major water treatment works in the north west of England are maximising its output, reducing the average ‘unit cost to treat’ to make it the most cost-effective water treatment asset in the area. The project saw us improve several key treatment processes through the installation of new rapid gravity filters (RGFs), lamella clarifiers and flocculation tanks, and upgrades to the pH correction system. Digital innovation was at the forefront of project delivery. The use of BIM 360, extended reality, the latest hand held scanning technology, intelligent machine control and digital inspection and test records helped to foster collaboration, improve safety and drive efficiencies throughout the project. Learn more on Water Projects Online. North West Water Treatment Works Upgrade To increase the resilience of Hereford’s water supply network, we designed and built a 34Ml service reservoir at Bewdley Bank. The ICE in both the West Midlands and Wales recognised its excellence, awarding it both the Innovation and Designed in Wales Awards, respectively. Judges in Wales were impressed with the attention to detail displayed on the project, together with its strong sustainability focus and an emphasis on landscape considerations, materials re-use, sustainable drainage and ecology. Read more on Water Projects Online. Bewdley Bank Service Reservoir To increase the resilience of Hereford’s water supply network, we designed and built a 34Ml service reservoir at Bewdley Bank. The ICE in both the West Midlands and Wales recognised its excellence, awarding it both the Innovation and Designed in Wales Awards, respectively. Judges in Wales were impressed with the attention to detail displayed on the project, together with its strong sustainability focus and an emphasis on landscape considerations, materials re-use, sustainable drainage and ecology. Read more on Water Projects Online. Bewdley Bank Service Reservoir Following a routine safety inspection, recommendations were made to ensure the ongoing resilience and capability of the reservoir at Lower Barden. Our client appointed MMB to improve the drawdown capacity, control leakages and modify the spillway channel to prevent floodwater from breaching the spillway structure. Due to its location in the Yorkshire Dales National Park, the scheme was legally required to conserve and enhance the historic and natural environment. During design, the decision was made to maintain the sloped walls and the curved steps to retain the heritage of the structure, with masonry used from a nearby quarry to be in keeping with the surrounding area. The installation of a new self-priming siphon now ensures the total drawdown capacity reaches minus 5m from top water level within 5 days, meeting the safety requirements. Lower Barden Impounding Reservoir Following a routine safety inspection, recommendations were made to ensure the ongoing resilience and capability of the reservoir at Lower Barden. Our client appointed MMB to improve the drawdown capacity, control leakages and modify the spillway channel to prevent floodwater from breaching the spillway structure. Due to its location in the Yorkshire Dales National Park, the scheme was legally required to conserve and enhance the historic and natural environment. During design, the decision was made to maintain the sloped walls and the curved steps to retain the heritage of the structure, with masonry used from a nearby quarry to be in keeping with the surrounding area. The installation of a new self-priming siphon now ensures the total drawdown capacity reaches minus 5m from top water level within 5 days, meeting the safety requirements. Lower Barden Impounding Reservoir First built in the 1970s, Embsay Water Treatment Works is a 24ML/d water treatment site. To address risks to drinking water quality, the outline solution involved the construction of a new interstage pumping station, new manganese filters and a start-up-to-waste facility. However, utilising our low carbon solutions in design approach, the PAS 2080 principles, and our Moata Carbon Portal tool, we were able to optimise the solution to deliver significant carbon, cost, and programme savings. Through optimising existing plant processes, re-using existing assets and maximising build efficiency in design we reduced the whole life carbon on the project by 77%. The final solution was a single precast concrete structure consisting of a new three compartment contact tank, clean backwash tank and drywell pumping station. Embsay Water Treatment Works First built in the 1970s, Embsay Water Treatment Works is a 24ML/d water treatment site. To address risks to drinking water quality, the outline solution involved the construction of a new interstage pumping station, new manganese filters and a start-up-to-waste facility. However, utilising our low carbon solutions in design approach, the PAS 2080 principles, and our Moata Carbon Portal tool, we were able to optimise the solution to deliver significant carbon, cost, and programme savings. Through optimising existing plant processes, re-using existing assets and maximising build efficiency in design we reduced the whole life carbon on the project by 77%. The final solution was a single precast concrete structure consisting of a new three compartment contact tank, clean backwash tank and drywell pumping station. Embsay Water Treatment Works Repeat business is the recognition that we’re looking for - but it’s nice to pick up an award or two along the way. Awards ABOUT JN Bentley Ltd is part of the global management, engineering and development consultancy Mott MacDonald, offering our clients full feasibility, design and construction services throughout the UK. Who we are ABOUT We integrate inclusion and belonging, professional and personal development, and health and wellbeing into our business culture. People OUR APPROACH Our aim is to reduce water consumption, minimise our waste, and use energy efficiently. Preserving resources OUR APPROACH We must deliver quality solutions in a cost and efficient way. Doing so ensures we add value for our clients and continue to thrive as an organisation. How do we achieve this? Through our Quality, Cost & Efficiency Strategy. Quality, cost and efficiency OUR APPROACH This is an overview of digital in JN Bentley, including our investment in digital delivery and our company digital transformation and how it is embedded in everything we do. Digital delivery OUR APPROACH MMB currently works with eight of the UK’s largest water companies after expanding our geographical reach with a recent appointment to our first ever framework with South West Water. With a clear focus on delivering value for our clients and their customers, we work across the full spectrum of capital works in the water industry – from source to tap and sink to river. We complete projects to the highest standards with a full understanding of the regulatory environment in which our clients operate. Innovation is central to our operations – it drives continuous improvements, saves time, money and reduces project risk. Most of the work that we undertake in the sector is delivered on a feasibility, design and construction basis through MMB – with JN Bentley appointed to a smaller number of construct-only frameworks. Water and wastewater Work in the water and wastewater sector is probably what we are most well known - our experience in this sector spans our entire history. We are delivering work in the UK water sector with: Anglian Water Dŵr Cymru Welsh Water Northumbrian Water Severn Trent South West Water Thames Water United Utilities Yorkshire Water Publications Our heritage Our policies Awards Who we are > Ethics Vision and values > About us Supply chain Add paragraph text. Click “Edit Text” to update the font, size and more. To change and reuse text themes, go to Site Styles. Close Supply chain Add paragraph text. Click “Edit Text” to update the font, size and more. To change and reuse text themes, go to Site Styles. FEATURED NEWS ARTICLE Close News View all Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading...

Navigate the future with JN Bentley's highways solutions. We drive innovation in infrastructure, ensuring safe and efficient road networks North Wales Trunk Road Under a framework for North and Mid Wales Trunk Road Agency we deliver works such as the installation of noise mitigation and vehicle restraint barriers, like these pictured on the A55. Rampside Sea Wall In the North West of England we renewed the current sea wall by placing new rock armour wall to ensure it provided protection to the coast for years to come. Baitings Gate Bridge This project at Baitings Reservoir saw us marry our knowledge of the water industry with our highways expertise. We replaced the 105m bridge deck and constructed new bearings. Back Next About us Introducing JN Bentley Vision and values Publications Baitings Gate Bridge, which crosses the upstream end of Baitings Impounding Reservoir near Ripponden, West Yorkshire, required significant structural alterations. The brief for the project included the removal of the existing bridge deck structure, refurbishment of the pier heads where required, and construction of a new deck and bearings, designed and constructed to modern bridge standards. Operational constraints on water level led the team to propose a barge and crane arrangement (both in demolition and construction). The project utilised pre-cast concrete products and Building Information Modelling (BIM) to ensure efficient delivery. Baitings Gate Bridge Baitings Gate Bridge, which crosses the upstream end of Baitings Impounding Reservoir near Ripponden, West Yorkshire, required significant structural alterations. The brief for the project included the removal of the existing bridge deck structure, refurbishment of the pier heads where required, and construction of a new deck and bearings, designed and constructed to modern bridge standards. Operational constraints on water level led the team to propose a barge and crane arrangement (both in demolition and construction). The project utilised pre-cast concrete products and Building Information Modelling (BIM) to ensure efficient delivery. Baitings Gate Bridge Our first project with North and Mid Wales Trunk Road Agency was located on the eastbound slip road of the A55 North Wales Coast Road, near St Asaph. The project consisted of the installation of 115m of 2.5m-high noise mitigation barriers to reduce the noise levels heard by nearby residents. The second project was also located on the A55 Holyhead to South of Chester Trunk Road between Junctions 27 and 27a near St Asaph. The scope here consisted of replacing nearly 850m of vehicle restraint barriers in the central reservation. North Wales Trunk Road Our first project with North and Mid Wales Trunk Road Agency was located on the eastbound slip road of the A55 North Wales Coast Road, near St Asaph. The project consisted of the installation of 115m of 2.5m-high noise mitigation barriers to reduce the noise levels heard by nearby residents. The second project was also located on the A55 Holyhead to South of Chester Trunk Road between Junctions 27 and 27a near St Asaph. The scope here consisted of replacing nearly 850m of vehicle restraint barriers in the central reservation. North Wales Trunk Road This project, located in the North West of England, renewed the current sea wall to provide protection to the coast for years to come. Work included the removal of nearly 150m of existing concrete wall; tie-in to existing concrete; the extension of current drainage and formation of concrete structures to secure drainage in rock armour region; placing of geotextile liner and bedding; and the stacking of large stones uniformly to create rock armour, a stable permanent feature mitigating coastal erosion in the Rampside area. Rampside Seawall This project, located in the North West of England, renewed the current sea wall to provide protection to the coast for years to come. Work included the removal of nearly 150m of existing concrete wall; tie-in to existing concrete; the extension of current drainage and formation of concrete structures to secure drainage in rock armour region; placing of geotextile liner and bedding; and the stacking of large stones uniformly to create rock armour, a stable permanent feature mitigating coastal erosion in the Rampside area. Rampside Seawall To facilitate the training of their linesmen, National Grid proposed the construction of a new training overhead line at their training facility at Eakring, Nottinghamshire. The proposal comprised eight new T-Pylon test structures. The line spans approximately 1km over undulating land, which had previously been used for agricultural purposes. In order for this work to be undertaken and for the future maintenance and testing works, enabling works were required, including the provision of access tracks to each pylon locations. Eakring Access Roads To facilitate the training of their linesmen, National Grid proposed the construction of a new training overhead line at their training facility at Eakring, Nottinghamshire. The proposal comprised eight new T-Pylon test structures. The line spans approximately 1km over undulating land, which had previously been used for agricultural purposes. In order for this work to be undertaken and for the future maintenance and testing works, enabling works were required, including the provision of access tracks to each pylon locations. Eakring Access Roads We believe that because we care about what we do, we do things better. Vision and values ABOUT These are the key policy statements of JN Bentley, Mott MacDonald Bentley and JBA Bentley, setting out the commitments and responsibilities of our business. Our policies ABOUT Repeat business is the recognition that we’re looking for - but it’s nice to pick up an award or two along the way. Awards ABOUT JN Bentley Ltd is part of the global management, engineering and development consultancy Mott MacDonald, offering our clients full feasibility, design and construction services throughout the UK. Who we are ABOUT We integrate inclusion and belonging, professional and personal development, and health and wellbeing into our business culture. People OUR APPROACH Our aim is to reduce water consumption, minimise our waste, and use energy efficiently. Preserving resources OUR APPROACH We are accustomed to working with local authorities in road renewal, bridge refurbishment contracts, pedestrianisation projects and city/town centre enhancement programmes. Through this experience, we know how important it is to deliver projects with minimal disruption to members of the public. Where access through the site needs to be maintained, we understand the additional responsibility to protect members of the general public, as well as our own construction teams, operating to stringent operational safety standards. In our history we have undertaken a wide variety of projects and built lasting relationships with local authorities including The North and Mid Wales Trunk Road Agent, Sunderland City Council, Cumbria County Council, North Yorkshire County Council, Leeds City Council and Bradford Metropolitan Council, to name just a few. In addition to collaborating with local authorities, we often lend our highways experience to clients in others sectors, such as the award-winning Baitings Gate Bridge constructed for Yorkshire Water. Highways JN Bentley has traditionally held a presence in the highways and local authority sectors – with our workload growing in the sector in recent times. We have a large and dedicated workforce with experience in undertaking highway structures work and our team is familiar with the relevant Department for Transport Specifications for Highway Works. Publications Our heritage Our policies Awards Who we are > Ethics Vision and values > About us Supply chain Add paragraph text. Click “Edit Text” to update the font, size and more. To change and reuse text themes, go to Site Styles. Close Supply chain Add paragraph text. Click “Edit Text” to update the font, size and more. To change and reuse text themes, go to Site Styles. FEATURED NEWS ARTICLE Close News View all Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading...

A champion of innovation This major new advanced anaerobic digestor has vastly increased treatment capacity and now turns sewage into biogas. A social cause This coastal realignment scheme is creating over 200 hectares of intertidal habitat and is a champion of social value. On an industrial scale Our links with the industrial sector dates back to the 1980s, with 100+ diverse projects delivered with a select group of blue-chip clients. Back Next Our sectors Water and wastewater An established presence in the UK water sector. Environment Working collaboratively with our clients on flood protection, asset repair and more. Energy Growing our presence in the energy sector. Highways Respected links with local authorities. Industrial building A long-standing blue chip client base. Aerospace Airside experience in a complex sector. Renewables Generating clean energy for our clients. Health and education Traditional contracting experience. Solid waste Sustainable waste management solutions. With experience in the construction and engineering industry dating back to 1972, it's fair to say that we've learned a thing or two along the way. And whilst we’re best known for our activity in the UK water sector, our capabilities span a host of other sectors too, from environmental engineering to highways and aerospace. Check out the exciting case studies to learn more about the skills of JN Bentley, MMB and JBA Bentley. ​ You can also learn more in our annual review. Publications Our heritage Our policies Awards Who we are > Ethics Vision and values > About us Supply chain Add paragraph text. Click “Edit Text” to update the font, size and more. To change and reuse text themes, go to Site Styles. Close Supply chain Add paragraph text. Click “Edit Text” to update the font, size and more. To change and reuse text themes, go to Site Styles. FEATURED NEWS ARTICLE Close News View all Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading... Loading...