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Walton le Dale WwTW

Celebrating 40 years! A look back - MGF make simple made-to-measure systems that were easy to install/remove
By: MGF Ltd
Published: October 25, 2021

Walton le Dale WwTW

The Walton le Dale Waste Water Treatment Works was a large and challenging site with multiple excavations which required a range of safety solutions. Throughout the scheme MGF delivered:

  • A dedicated design engineer providing; comprehensive technical support, temporary works design coordination and project management.
  • Innovative, bespoke excavation safety solutions.
  • On site shoring and safety tuition.

United Utilities commissioned a major upgrade to the existing WwTW.

The upgrade to the works was approved a £23.5m budget. Due to the large scale of the site and the complexity of the construction and commissioning sequence it was recognised that the scheme would prove one of the most demanding in the AMP5 programme.

The site itself delivered some challenges – an area of land to the south east was designated as an ancient woodland and site of biological interest with further fields south west of the site said to be of biodiverse value. The site was partly located on a flood plain with high water tables and the risk of flooding had to be considered from the out-set of planning.

The solution

With multiple, deep excavations taking place on the site KMI Plus identified the need for extensive shoring solutions in order to create a safe working environment. Based on previous experience with the contractor and the ability to provide complete engineering solutions, contract management and temporary works coordination, MGF were appointed to provide excavation safety solutions.

On the site there were a number of small, shallow, ductile and concrete pipe excavations which required simple shoring solutions such as manhole boxes and trench boxes. Other excavations were larger and deeper and required precision planning and innovative solutions.

The three most notable excavations and the equipment MGF delivered to support these were as follows:

  • Humus Tank Excavation: 30 diameter and 1.8m deep. MGF provided a bespoke, circular, cantilevered, Larsen sheet piled cofferdam.
  • Cross Over Weir Excavation: 18m x 10m and 4.5m deep. MGF provided MGF 400 Series Struts, MGF 406 UC Braces and trench sheets. The shoring of this excavation was complex with changing requirements which MGF were able to accommodate.
  • Outfall Pumping Station Excavation: 17m diameter and 8m deep. MGF provided bespoke designed, octagonal shaped MGF 406 UC Brace hydraulic systems complete with inter-locking Larsen sheet piles to help minimise groundwater ingress. The octagonal design was developed to accommodate existing structures on site and keep access roads open. The outfall pumping station was positioned close to another structure and extra care was taken to ensure that neither excavation affected the other.

Desmond Donnelly, Project Manager, KMI Plus commented:

“In addition to the shoring equipment, MGF provided a dedicated Project Manager, Antony Birchall and Temporary Works Engineer, Emma Hewitt to support the project throughout the duration of the temporary works. They gave us the support we needed to create a safe working environment on such a large and complex site. Regular contact and consultation of the temporary works designs, combined with their knowledge, experience and understanding of our requirements and the site, enabled us to safely deliver the shoring elements of this demanding project at Walton Le Dale Waste Water Treatment Works.”

The verdict

MGF provided KMI Plus with made to measure systems that were easy to install and remove whilst providing a safe working environment and optimum working space. The solutions allowed site access to remain open and reduced the levels and flows of ingress water from the flood plains.

MGF conducted site checks and soil inspections and offered on site training in shoring and safety awareness. The designation of a single design engineer to the scheme ensured that the contractors temporary works design requirements were fulfilled.

 

 

For more information: MGF Ltd | +44 (0)1942 402700 | www.mgf.co.uk

 

 

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case-study
Christchurch STW Inlet Rising Main Renovation (2018)
A burst occurred in a section of 400mm DI rising main within the curtilage of Wessex Water’s Christchurch sewage recovery works in Dorset. The works serve a population in the adjacent catchment of 59,000. The location of the burst was close to a bend in the main, beneath a large diameter primary sedimentation tank, and […]
case-study
Cowleigh Distribution Service Reservoir & Lower Wyche Pipeline (2018)
Cowleigh Distribution Service Reservoir (DSR) and Lower Wyche DSR are located to the north and south of Great Malvern, Worcestershire and are overlooked by the Malvern Hills. Cowleigh DSR receives water from Powick Pumping Station and the Southern Strategic Main, whilst Lower Wyche DSR receives water from Bromsberrow WTW which is borehole site. Severn Trent […]
case-study
Dalton Piercy WTW (2018)
Dalton Piercy Water Treatment Works (WTW) supplies an average demand of 32 Ml/d to ~45,000 properties and significant industrial customers in Hartlepool. The current site process includes UV disinfection, sodium hypochlorite dosing and orthophosphoric acid dosing. This article describes how Anglian Water’s @one Alliance successfully applied product-based delivery principles to the Dalton Piercy Manganese and […]
case-study
DCWW AMP6 Water Quality Zone Improvements (2018)
Of Dŵr Cymru Welsh Water’s 85 (No.) Water Quality Zones (WQZs), 20 (No.) contribute 75% of the company’s targets to improve water quality and reliability. Detailed analysis has been carried out and documented in Zonal Study reports for these zones. These identified specific schemes, ranked in cost benefit order, presented in a standard plan and […]
case-study
Deephams STW - A630 Major Upgrade (2018)
Thames Water’s Deephams Sewage Treatment Works (STW) is located in Edmonton, North London and treats a 989,000 population. Three drainage catchment areas of Lea Valley, High Barnet and Tottenham flow to the works, the ninth largest plant in the UK. The original effluent treatment process was built between 1956-1966 and had been updated at various […]
case-study
East Tanfield STW (2018)
East Tanfield Sewage Treatment Works (STW) is a Northumbrian Water Group (NWG) site located 11 miles north-west of the City of Durham and 9 miles south-west of Newcastle-upon-Tyne. It consists of two distinct sites: a ‘lower’ site comprising a terminal pumping station (TPS) with emergency storage tanks adjacent to the Houghwell Burn watercourse; and an […]
case-study
Frome Valley Relief Sewer (2018)
The Frome Valley Relief Sewer scheme represents a £15m capital investment by Wessex Water to provide additional capacity for the continued development within the North Bristol area. It is the third phase out of a total of four phases which will see wastewater flows diverted from South Gloucestershire to Avonmouth Sewage Treatment Works in Bristol […]
case-study
Hagley (Newfield Road) Flood Alleviation (2018)
The small town of Hagley, Worcestershire is served by an ageing sewer network which drains the wastewater of the 6,000 inhabitants towards the large Milestone Drive Sewage Pumping Station. Following decades of growth, misconnections and increased urbanisation within the existing catchment, hydraulic pinch points on the foul sewer network subjected numerous clusters of low-lying properties […]
case-study
Hanchurch Service Reservoir (2018)
A ‘product-based’ approach to service reservoir construction is revolutionising the way MMB are constructing a new multi-million-pound distribution service reservoir (DSR) for Severn Trent Water (STW). To boost productivity in the construction process, the new 43ML reservoir is being treated as a ‘product’, manufactured largely off site in controlled-conditions, before being assembled on site near […]
case-study
Irton WTW (2018)
Yorkshire Water’s Irton Water Treatment Works (WTW) is located 5.5km southwest of Scarborough in North Yorkshire. The WTW abstracts water from an aquifer via numerous boreholes and supplies two local service reservoirs; Springhill and Low Mount, which feed Scarborough and the surrounding area. Demand profiles are seasonably variable. The site has an abstraction licence for […]
case-study
Killingworth & Longbenton Water Management (2018)
Since 2010, the Risk Management Authorities (RMAs) for the Tyneside drainage catchment have developed and implemented an area-based prioritisation process to identify and investigate those drainage areas at greatest risk of performance failure. The Killingworth, Longbenton and Forest Hall area was one of those areas identified, something supported by the published 2010 Strategic Flood Risk […]
case-study
Manganese North (2018)
Between 2007 and 2014 two of Northumbrian Water’s (NWG) water supply zones, served by Whittle Dene WTW and Warkworth WTW, both in Northumberland, consistently received the highest number of water quality contacts for discoloured water. In previous AMP periods, NWG undertook a programme of strategic mains cleaning and unidirectional flushing to improve customer acceptability performance. […]
case-study
Minworth STW - Thermal Hydrolysis Plant (2018)
Minworth STW is Severn Trent’s largest sewage treatment works and serves a population equivalent of 1.75 million from Birmingham with full flow to treatment of 1,070Ml/d. The works treats sludge arising from a population equivalent of 2.3 million which is made up of indigenous sludge plus imported sludge from the nearby Coleshill STW and various […]
case-study
Nine Elms, Battersea Growth & SuDS (2018)
The Nine Elms redevelopment area within Battersea includes 21,000 new dwellings, office, leisure and retail space creating 8000 new jobs including the new US Embassy, a relocated New Covent Garden Market site and the Northern Line extension. An integrated water management study completed by Thames Water (TW) in partnership with the Greater London Authority, ARUP […]
case-study
Northcombe WTW GAC Scheme (2018)
Located near Okehampton, Northcombe WTW supplies a large region of North Devon including Barnstaple, Bideford and South Molton. The works supplies over 88,000 customers, with around half of these relying on Northcombe as their sole supply of water. As standards for water quality change, South West water (SWW) has been issued a notice by the […]
case-study
Ogston WTW (2018)
Ogston Water Treatment Works (WTW) is located at Stretton, Higham in Derbyshire and it provides treated water to Higham, Ambergate and Whiteborough Reservoirs. The maximum works output is 76 mega litres per day (MLD) with an output for the New works DAF (dissolved air flotation) plant of 50 MLD. As part of the AMP6 coagulation […]
case-study
Plymouth Central STW Stormwater UV Irradiation (2018)
The European Union’s (EUs) revised Bathing Water Directive (rBWD) (2006/7/EC) came into force in March 2006 replacing Bathing Water Directive (BWD) (76/1160/EEC). The overall objective of the revised directive is the protection of public health. From November 2015, a new classification system for bathing waters (excellent, good, sufficient or poor) was introduced, with more stringent […]
case-study
South West Water Shellfish Waters NEP AMP6 Programme (2018)
The 2010 Shellfish Waters Directive placed a new obligation on South West Water (SWW) to endeavour to meet the Shellfish Waters Regulations ‘Guideline’ Standard. (Class B). The Shellfish Waters (SFW) programme of work was to meet legislative requirements to protect or improve designated shellfish waters to support shellfish life and growth, contributing to the quality […]
case-study
Tideway Central - Overview (2018)
Thames Tideway Tunnel is the largest water infrastructure project currently under construction in the UK and will modernise London’s major sewerage system, the backbone of which dates back to Victorian times. Although the sewers built in the mid-19th century are still in excellent structural condition, their hydraulic capacity was designed by Sir Joseph Bazalgette for […]
case-study
Tynywaun WTW (2018)
Tynywaun Water Treatment Works forms part of the South East Wales Conjunctive Use System (SEWCUS) chain of water treatment works that supply the central South Wales valleys and cities of Newport and Cardiff. This SEWCUS system does not, however, provide full conjunctive use to the Tynywaun distribution area, having very limited connectivity. The works has […]
case-study
Upper Chelburn Impounding Reservoir (2018)
Upper Chelburn Impounding Reservoir (IR), located near Rochdale on the east Lancashire moors, is owned and operated by United Utilities (UU), providing compensation water to the nearby Rochdale canal. The reservoir is impounded by northern and southern earth-fill embankments (Figure 1), with a resulting capacity of 236,000m3. The 16.5m high northern embankment was constructed between […]
case-study
Woodgate Hill Service Reservoir No. 2 (2018)
Woodgate Hill Service Reservoir No. 2 (SR2) was commissioned in 1963, providing a total capacity of 269Ml and a throughput that equates to 20% of the regional water demand. The reservoir was built in to the hillside with an excavation of around 380,000m3. With a footprint of 47,000m2, at the time of construction, Woodgate Hill […]
case-study
Woolston WwT Scheme - Part 3 (2018)
Built in 1966, Woolston Wastewater Treatment Works (WwTW) uses a conventional Activated Sludge Plant (ASP) to treat sewage flows from part of the Southampton conurbation. Serving a population of approximately 62,000, the site occupies an area of 1.26 hectares. The existing sewerage system which feeds into the WwTW collects both wastewater and stormwater from the […]
case-study
Beckton to Riverside Sludge Mains Refurbishment (2017)
Thames Water Utilities Limited (TWUL) currently transfer a proportion of the wastewater sludge generated by Beckton Sewage Treatment Works (STW) in East London to Riverside STW using 2 (No.) 8km buried pipelines. These twin pipelines were originally installed in the late 1960s to pump sludge in the opposite direction from Riverside to Beckton where it […]
case-study
Bickerstaffe Pumping Station (2017)
The Southport Demand Monitoring Zone (DMZ) comprises ten supply zones with a population of approximately 245,000 covering the majority of the areas of the District Councils of West Lancashire and Sefton. Southport DMZ suffers from a number of issues including (i) peak demand during the summer months (ii) population growth (iii) water management. To overcome […]
case-study
BRP - Elan Valley Aqueduct (Bleddfa) - Birmingham Resilience Project (2017)
At the height of the industrial revolution, Birmingham’s population was booming. Between 1800 and 1900, the city had grown substantially. An innovative solution was needed to provide its residents and industries with safe drinking water. James Mansergh had identified the Elan Valley as a source for water. With Birmingham located so far in land, the […]
case-study
Bransholme Surface Water Pumping Station (2017)
Hull’s response to the 2007 flooding that affected thousands of homes in the Bransholme catchment is now complete and operational. This saw Yorkshire Water appoint Black & Veatch (now Binnies) to carry out a feasibility study followed by a design and build contract for a new pumping station. The new Bransholme Surface Water Pumping Station (SWPS), […]
case-study
Bristol Road Sewer Pumping Station (2017)
Burnham Jetty is the only ‘poor’ bathing water site in the Wessex Water region as categorised by the EU Revised Bathing Water Directive. Wessex Water has been working with the Environment Agency and committed £39 million to 12 schemes to improve this rating. Bristol Road Sewer Pumping Station (SPS) and Combined Sewer Overflow (CSO) rebuild […]
case-study
Bynea Sewage Pumping Station (2017)
Dŵr Cymru Welsh Water (DCWW) is carrying out a strategic package of works in the Llanelli and Gowerton catchments with the aim of reducing spills into the Loughor Estuary. Bynea Sewage Pumping Station (SPS) is a key asset, receiving sewage flows from the local catchment and transferring them to Llanelli WwTW. The site originally operated […]
case-study
Cowley Trunk Main Project (2017)
Following a burst on the existing 24” trunk main running along the Oxford Eastern Bypass in September 2014 causing severe flooding, Thames Water made the decision to replace the high risk section of the main to prevent future pipe failures. The Optimise Joint Venture delivered the £6m project, installing 2km of replacement trunk main along […]
case-study
Davyhulme WwTW Modernisation Project (2017)
Davyhulme WwTW is United Utilities’ largest wastewater treatment works, which serves over one million people in Greater Manchester; it has been undergoing a £200 million modernisation process, which started on site in 2015 and is now close to construction completion. The upgrade is required to ensure it complies with tighter discharge consents and the impact […]
case-study
Heigham WTW (2017)
Heigham Water Treatment Works (WTW) is the main supply of water to Norwich and supplies an average of 42Ml/d of water sourced from the River Wensum at several locations. Potable water is pumped into the Norwich Public Water Supply Zone feeding a multitude of storage reservoirs, booster pumps and properties. The main raw water abstraction […]
case-study
Hesketh Bank WwTW (2017)
Hesketh Bank Wastewater Treatment Works (WwTW) serves a population of approximately 5,800. The catchment of this Lancashire village is mainly residential and much of the surrounding land is dedicated to agriculture. The treatment works is on the edge of the village and is situated close to the River Douglas, near its confluence with the Ribble […]
case-study
Horsley WTW (2017)
Northumbrian Water’s Horsley WTW serves around 800,000 people in the Newcastle and Tyneside area. The original works was constructed in 1977 and last extended in 2003. It draws its supply from the nearby River Tyne at Ovingham and the Whittle Dene complex of reservoirs fed from Kielder Water. The existing works has a capacity of […]
case-study
Ipswich Tidal Barrier Project (2017)
Ipswich’s position on the estuary of the River Orwell in Suffolk makes it susceptible to both fluvial and tidal flooding. The Ipswich Tidal Barrier Project is the final element of a £58m programme of work by the Environment Agency (EA), to upgrade the flood defences on the East and West bank of the tidal river […]
case-study
Irvine Bypass Trunk Main (2017)
An existing, but ageing, 33”-36” diameter potable water main supplying over 40,000 customers in Ayrshire was identified by Scottish Water as requiring replacement. The existing pipeline was to be replaced with a new pipeline constructed of polyethylene (PE) pipe sections butt-fusion welded into 200m long pipe strings. Caledonia Water Alliance (CWA), a joint venture between […]
case-study
Minworth STW - Thermal Hydrolysis Plant (2017)
Minworth STW is Severn Trent Water’s largest sewage treatment works and serves a population equivalent of 1.75 million from Birmingham with full flow to treatment of 1,070Ml/d. The works treats sludge arising from a population equivalent of 2.3 million which is made up of indigenous sludge plus imported sludge from the nearby Coleshill STW and […]
case-study
Mogden STW (2017)
Mogden Sewage Treatment Works is the second largest in the UK. The first phase was built between 1931 and 1935 at a cost of £1.7 million and covers an area of 55 hectares. The facility treats wastewater from a population equivalent of 1.9 million across a 60 square mile catchment area of north and west […]
case-study
Oldham & Royton Integrated Strategy (ORIS) (2017)
United Utilities is the regional water company for the north west of England, delivering water and wastewater services to 7m people from Cheshire to the Scottish border. Oldham WwTW and Royton WwTW are two major treatment works located in Oldham, to the north east of Manchester. The Oldham and Royton Integrated Strategy (ORIS) project combines […]
case-study
Springs Impounding Reservoir (2017)
United Utilities (UU) is the statutory undertaker for 132 impounding reservoirs (IRs) retained by earth-fill embankment dams which fall under the requirements of the 1975 Reservoir Act. Before the era of ‘Pennine’ type clay core construction techniques, many impounding reservoirs that were constructed around the turn of the nineteenth century were substantially homogenous, comprising of […]
case-study
Tideway Central - Vessel Relocation (2017)
London’s sewerage system was designed by Sir Joseph Bazalgette in the 1850s, for a population of four million people. Whilst the Victorian sewers are still in excellent working condition, they are struggling to cope with the demands of the city’s growth. Every year, tens of millions of tonnes of raw sewage pour into the River […]
case-study
Whitburn Spill Reduction (2017)
Northumbrian Water is required to provide investment to reduce spills at Whitburn and St Peter’s, Sunderland in order to comply with the requirements of the Urban Waste Water Treatment Directive (UWWTD) by December 2017. Sunderland (north) is an urban catchment of predominantly residential properties and is home to Sunderland’s Blue Flag award winning beaches at […]
case-study
Woolston WwT Scheme - Part 2 (2017)
Built in 1966, Southern Water’s Woolston WwTW uses conventional activated sludge plant (ASP) to treat sewage flows from part of the Southampton conurbation, serving a population of approximately 62,000 people. The site occupies an area of 1.26 hectares. The existing sewerage system which feeds into the WwTW collects both wastewater and stormwater from the Woolston […]
case-study
Company News
MGF celebrates turning 40!
MGF are proud to announce that this month marks our 40th anniversary! Whilst we can’t get together to celebrate, we are reminiscing about the “good old days”.
Company News
MGF is now open in Scotland!
After almost a year in action, MGF’s Livingston Depot has been providing excavation safety solutions to those across Scotland
Company News
MGF Launch New Lifting Equipment Division
MGF are thrilled to announce the launch of our new Lifting range!
Company News
Bridgwater Water Supply
Celebrating 40 years! A look back - MGF successfully came up with a design that suited the complicated ground surrounding the reservoir tank
press-release
Hornsey WTW
Celebrating 40 years! A look back - MGF successfully managing ground movement during construction works
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Hurleston WTW
Celebrating 40 years! A look back - MGF successfully install temporary works within 2 weeks
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Hyndburn WTW
Celebrating 40 years! A look back - MGF offer a cost effective and safe solution that was easy for the contractor to install
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Sewer Replacement in Shallow Trench
Celebrating 40 years! A look back - MGF GRiPSHORE range used over traditional shoring methods
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Vyrnwy Large Diameter Trunk Main
Celebrating 40 years! A look back - MGF provided expert temporary works designs for over 100 excavations
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Walton le Dale WwTW
Celebrating 40 years! A look back - MGF make simple made-to-measure systems that were easy to install/remove
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