Woodmansterne Water Treatment Works upgrade

We sincerely apologise for any inconvenience these essential works may cause and thank you for your patience and cooperation.

This web page will continue to be updated until the works have been completed. If you have any problems or questions, please contact our Customer Services Team on 01737 772000, or you can email CustomerRelations@waterplc.com.

 


3 April 2017

With the very clement weather we are definitely “making hay while the sun shines”.  Progress of the main building is coming on well with the concrete structure now above ground level.  We are also moving on with preparations for the extension to the pumping station alongside Outwood Lane.  The excavations have started for the basement as well as demolition of the existing single storey building.

Since the last update we have also installed the grey surge vessel which is a bit conspicuous, so to try and reduce the visual impact of this we are developing a landscaping plan in association with the local planning authority.

This week we are removing two of our standby generators which have been in service since the 1960’s, which is testament to the quality of the engineering at the time.  However with the increased capacity of the site we need to replace these with larger machines.

On Friday 7 April we will be constructing a large concrete slab that will be the base for the filters within the new building.  Because of the size of the slab and the exact finish that is required on the surface the construction will mean that the site will have extended working time into the night. I apologise for any inconvenience caused in advance.


31 March 2017

Extended working hours on Friday 31  March - we are carrying out a large concrete pour today starting at 8am which could take up to 16 hours.  We apologise in advance for any noise and disturbance that we cause.


3 March 2017

Extended working hours Friday 3 March.

We are carrying out a large concrete pour today starting at 8am which could take up to 12 hours.  We apologise in advance for any noise and disturbance that we cause.


Friday 27 January 2017

Unfortunately due to the snow and icy conditions of the last couple of weeks we need to work this Saturday to keep the work on track.  The hours of work will be 8.30am to 4pm.  We will try to keep disruption to a minimum and apologise for any inconvenience caused.


Monday 23 January 2017

Most of you would have noticed the recent addition to the Woodmansterne Skyline. We’re using this to construct the basement area of the new building on site. Here are some aerial shots, with and without snow!


Friday 25 November

On Monday 28 November we’ll be carrying out a large concrete pour on our Woodmansterne site to provide the base for our new Rapid Gravity Filter. We need to lay the concrete in one continuous activity, which means we will be working into the evening. Noisy activities and vehicle movements should be complete by 5pm but some works will continue into the night. Given the dark evenings we will have to provide some additional lighting, but this will be pointed into the excavation.

We apologise for any disruption and inconvenience that the work may cause.


Thursday 17 November

Today we are carrying out a large concrete pour on site to provide the base for the new Rapid Gravity Filter building. To ensure the integrity of the base we need to lay the concrete in one continuous activity. Unfortunately this will mean that we will be working into the evening. There will be minimal noise other than vehicles moving around the site. Given the dark evenings we will have to provide some additional lighting but this will be pointed into the excavation.

We apologise for any disruption and inconvenience that today’s work may cause.


Tuesday 8 November

Construction on the main site has continued and we have now completed the excavation for the new Rapid Gravity Filter building.  We have started to build the reinforced concrete base and walls for the building. Alhough the base is some 5m below ground it won’t be long before we reach ground level.

With the excavation completed the number of lorry movements to and from the site has been significantly reduced.

The lagoon has been in operation since July and the soak through to the aquifer is still happening at an impressive rate, meaning that for most of the time there is no water in the lagoon.  We have now completed the consultation process on the landscaping for our section of the field and final drawings are now being produced with the intention of starting the planting next spring. As can be seen from the photos, the area has greened up naturally.

 


Tuesday 23 August

The recent good weather has enabled us to make real progress on the sites.

On the lagoon site the construction is now complete with the fence and reptile fence in place. The lagoon is now in operation with water from the treatment works being pumped to the lagoon where it filters through the ground to the natural aquifer some 80m below the surface. The infiltration rate is very impressive with the water soaking away nearly as soon as it reaches the lagoon. For the landscaping we have come to the end of the first phase of the consultation and our landscape architects are busy preparing designs that take everyone’s views into account. We hope to be able to present the design within the next month or so.

At the treatment works site we have completed the piling for the new Rapid Gravity Filter building and we are in the process of excavating to 5m below the ground. Now that the new lagoon is in operation, we will be starting to dig out the existing lagoon on site so that we can continue with the excavation for the new building.


Tuesday 19 July

Yesterday we started the main construction works on site and the weather has been kind to us. We spent the day setting up the piling rig so that we can start to drill the piles that will allow us to start work on the foundations for the new filter house. The piling will take about 3 weeks and then we will be excavating material to a depth of about 8m deep.

On the lagoon site we have installed the main fence and are now installing an ecological fence to ensure that no reptiles can get into the lagoon.

 


Thursday 30 June 

We have now completed the construction of the lagoon at Woodmansterne. We have also successfully pumped water in to the lagoon, which soaked through the base and down to the underground aquifer. We aim to start operating the lagoon soon and for everyone’s safety we will be installing a fence around it in the next couple of weeks. There is a possibility that this fencing could be changed once the outputs of the landscape consultation are approved. We have also completed the construction of a temporary parking area in the field. This will be for our workers whilst we are carrying out construction work on the main site. Using this as a car park prevents additional car parking in residential roads.

On the main site we have started to prepare for our construction works to begin on 17th July. We have been carrying out surveys to establish what services are underground and also reduced the ground level in preparation for the new filter house. We have installed temporary cabins as offices and welfare facilities for the construction workers.

As work on site ramps up you will notice additional traffic movements and there will be some additional noise during working hours, 8am-5pm. We apologise in advance for any inconvenience this may cause and we will strive to keep disruption to a minimum.


Tuesday 7 June

We have now completed the grading and top-soiling of the slopes on the lagoon. Our works at the entrance onto Rectory Lane are also now finished and have been approved by Surrey Highways. Thanks to the recent wet weather the grass that we have sown at the entrance is now starting to grow. We have removed the temporary fencing from across the entrance and also removed the pile of soil that was at the top of the bank.  There is now minimal work left for us to do in the field which includes tidying up and finishing off the access tracks.

The landscape consultation and design is moving forward and the architects have now met with Coulsdon Residents Association. They are due to meet with Woodmansterne residents next week.

On our water treatment works site we are continuing investigative works, this includes digging trenches across the site to locate underground pipes and cables.  In the next couple of weeks we will have temporary offices installed on site.


Friday 13 May

The construction of the lagoon is now complete and we are currently working to slope the edges of the lagoon so that they match the natural contours of the field. This work is due to be finished by week commencing 16 May. The pipeline from the treatment works has also been successfully installed, tested and the excavations filled.

At the site entrance we have completed the visibility splay and created a footpath so our operatives can access the site.

On our water treatment works site we have started to carry out some investigative work, this includes digging trenches across the site to locate underground pipes and cables.


Tuesday 12 April 

Our contractor CJ Thorne is progressing well and has now laid the new pipe which will take water from the water treatment works to the lagoon. We are also now half way through the construction of the embankments and outfall structure, which is the point at where water pumped from the treatment works enters the lagoon.

We recognise the machinery involved in the construction of the embankments can be noisy and we sincerely apologise for any inconvenience this may cause. We are aiming to complete our lagoon works by the first week of May 2016.

The independent landscape architect Land Management Services is in the process of liaising with local resident associations and councillors to develop the final landscape plan for the lagoon site.

If you would like to have your say on the final landscape and visual impact mitigation plan for the lagoon site please get in touch with your local residents’ association or local councillor.


Monday 4 April

This week, three mature trees will be felled along the north western boundary of our Woodmansterne Water Treatment Works.

Apart from suffering severe decay, which is affecting their structural stability, they are posing a potential risk. They are also lying within the proposed route of the 900mm pipe which will take the softened water to the new filtration building

The connecting pipe is due to be laid in a years’ time. However, following the advice of our consultant arboriculturalist, the trees should be removed now for safety reasons.

The work is being undertaken by a tree surgeon appointed by Doosan, our main contractor, and supervised by a qualified ecologist. Doosan has permission from Reigate and Banstead Borough Council as the trees are not protected. The work is expected to be completed by Thursday 7 April.

Doosan will be reviewing the possibilities of replanting the area where the trees have been felled once the three year upgrade project is complete.


Wednesday 30 March 

The excavation for the lagoon is now complete and we have started to form the banks around it. We realise that this can be noisy and we apologise for any inconvenience it may cause. This work should be finished within the next three weeks.

We have now installed about three quarters of the pipe between the treatment works and the lagoon. By installing the pipe in sections we have been able to keep disruption to a minimum and keep the track in the field open while we carry out the work.

The work on Rectory Lane is now complete and we have tarmacked the footpath to the pedestrian crossing. We have also removed the vegetation adjacent to the crossing making it a much safer place to cross the road.


Wednesday 16 March 

Due to efficient working between our team and our contractor CJ Thorne we have been able to reopen Rectory Lane two days ahead of schedule.

The road was opened at 4pm today and the diversion signs will be taken down tomorrow morning.

Thank you for your patience and cooperation during the road closure.


Wednesday 9 March

A polite reminder to all local residents and road users of the official Rectory Lane diversion route as agreed by Surrey Highways. Please click on the image below to enlarge.


Tuesday 1 March

We have completed the excavations at the site entrance and have reached ground level in the field. This means we now have access to the area where the lagoon will be constructed. We have fenced off this area and started to strip the top soil in preparation for excavating the lagoon.

A reminder that from 7 March Rectory Lane will be closed to the south of the shops to enable us to install pipework between the lagoon site and the main treatment works. We are aiming for this work to be complete within two weeks, however we will do all we can to finish sooner.

A signed diversion route will be in place as agreed with Surrey Highways and pedestrian access past the road closure will be retained at all times. The bus stops outside the Midday Sun will not be affected.

Land Management Services have started the landscaping consultation process with Woodmansterne Green Belt and Residents Association and Coulsdon West Residents Association. They will be able to give details of meetings when they are arranged if you would like to be involved in the process.


Monday 22 February 

We are continuing to make good progress on the construction of the access road from the site entrance to the lagoon. We have excavated to road level and are now digging our way through the chalk as we start to climb to meet the existing field level.

We have now employed landscape architects Land Management Services (LMS) who will be carrying out consultation with local residents’ associations and councillors to agree the landscaping of the site entrance and lagoon area. If you’re a local resident and would like to be involved in the consultation process please contact your residents’ association, or local councillor.

As part of this project we need to lay a pipe across Rectory Lane from our main water treatment works site to the lagoon site. This will require a road closure of up to two weeks starting on Monday 7 March. The road will be closed between Pine Walk and Outwood Lane and diversion signs, as agreed with Surrey Highways, will be put in place. Please click on the link below to see a map of the diversion route. You will still be able to access the businesses and shops in Rectory Lane during the road closure and the parking bays will remain available. All residents who will be directly affected by the closure will receive a letter from us in the coming week.

We sincerely apologise for any inconvenience this road closure may cause and thank you for your patience and cooperation.

Rectory Lane diversion route

Footpath diverson route

Please note - The land owners have recently informed us that they will shortly be fencing off their remaining section of the field. They have advised us that the footpath at the eastern boundary (to the rear of Lyndhurst Road) will remain open. The installation of this fence is completely separate from our project and is being erected at the sole decision of the land owners.


Tuesday 26 January 

Progress on the entrance to the lagoon site has gone to plan with the tarmac and white lining completed on Friday 22 January. The temporary traffic lights have also been removed and the road was returned to two-way traffic on Saturday morning. Work has now begun to construct an access route from the entrance to the site of the new lagoon.

We would like to sincerely thank residents and road users for their patience and cooperation during this phase of the project.

We are currently in the process of employing a landscape architect to consult with local residents’ associations and councillors to agree the landscaping of the site entrance and lagoon area.  We have now completed our selection process and will be confirming the contract this week. The Landscape Architect will then contact the residents’ associations to arrange consultation meetings.

If you’re a local resident and would like to be involved in the consultation process please contact your residents’ association or local councillor.


Thursday 7 January 

We started constructing the entrance into Drake’s Field on Monday 4 January, as planned. The vegetation clearance is now complete with the work being carried out under the supervision of an independent ecologist.

We have had to install temporary traffic lights to ensure the safety of our workers, road users and pedestrians. These will be in place for about three weeks, although we are working hard to reduce that amount of time.

We have put temporary fences around our working areas in Drake’s Field, however, pedestrian routes around the field remain open and we are regularly cleaning the footpath at the road crossing on Rectory Lane.


Friday 11 December

Having listened to residents’ concerns about site cabins being located on Drake’s Field, we have carried out a design review of the main project works.

The result is that we have managed to free-up sufficient space within our existing treatment works site to accommodate all temporary offices and welfare facilities required for the lagoon construction and the project at the main treatment works. Having these offices on the treatment works site also means we will not need to install sewerage and power connections from the main site to Drake’s Field.
 
We will now only need to use our part of Drake’s Field for workers’ car parking, storage of large items (pipework, etc), soil stockpile and a maximum of four metal containers for storage of smaller items.


Monday 30 November

The construction work to create the highway access off Rectory Lane has now been scheduled to begin Monday 4 January 2016.

The creation of the entrance to the lagoon should only require two-way traffic lights for approximately four weeks, reducing Rectory Lane to one lane. We will do all we can to minimise the impact, inconvenience and disruption to local residents and road users. The lagoon construction work is due to complete in April 2016.

If you have any questions, our Customer Services Team are available between 8:30am and 5:00pm, Monday to Friday on 01737 772000, or you can email CustomerRelations@waterplc.com.


Monday 16 November 

All the essential environmental and ecological work on the south west boundary of Drake’s Field has been completed and reptile fencing erected between the entrance and the remaining hedgerow to ensure the safety of any slow worms and lizards.

We are continuing to consult with local councillors and residents associations regarding appointing an independent landscape architect, who will propose designs taking into account the views of all concerned parties, so that we achieve a solution agreeable to the local community.

We sincerely apologise for any inconvenience these essential works may cause and wish to assure you that we will do all we can to mitigate the impact on the local community.

We will issue regular project updates on this page as the work progresses. Information can also be provided by our Customer Services Team on 01737 772000 or email CustomerRelations@waterplc.com


Tuesday 13 October 

On Monday 12 October, we began essential environmental and ecological work on the south west boundary of Drake’s Field. Throughout the rest of this week we will be working to clear the hedgerow adjacent to Rectory Lane in preparation for creating the access opening.

These works are being carried out under the control and supervision of qualified ecologists in order to protect slow worms and lizards. Our initial ecological survey results suggest that there are no dormice in the area, but we will be taking care to check for them throughout the works.

Once the hedgerow has been cleared, we will scrape the surface to ensure that it is unsuitable for reptiles. We will then erect reptile fencing between the entrance and the remaining hedgerow to ensure the safety of any slow worms and lizards.

Once the ecological work has been completed, we will begin constructing the highway access off Rectory Lane. Completion of the lagoon construction work is due in early 2016.

We will do all we can to minimise the impact, inconvenience and disruption to local residents and road users. The creation of the entrance to the lagoon should only require two-way traffic lights, reducing the carriageway to one lane for approximately four weeks.

We also need to lay a pipe across Rectory Lane from our main site.  We anticipate that this will require a road closure of up to two weeks but we are looking at ways of shortening the time.

Any traffic control will be as requested by the Highways Authority to ensure the safety of road users, the general public and our workforce. Residents and businesses affected will be contacted in advance, and there will be traffic-warning signs sited locally.

Normal working hours on the site will be restricted to 8:00am to 6:00pm Monday to Friday. There may be Saturday working on occasions but this will be strictly controlled.

We sincerely apologise for any inconvenience these essential works may cause and wish to assure you that we will do all we can to mitigate the impact on the local community.

We will be issuing regular project updates on this page as the work progresses. Information can also be provided by the SESW Customer Services Team on 01737 772000 or email CustomerRelations@waterplc.com


Monday 28 September

Lester Sonden (Engineering Director) updates customers in Woodmansterne and Coulsdon on the Woodmansterne WTW refurbishment and off-site lagoon.

 

 


Tuesday 15 September

After holding a number of project briefing sessions with local residents’ representatives, we are aware there are concerns about this project. To help address these concerns we are holding a Drop-in event at St Aidan’s Church Hall, 1 Portnalls Road, Coulsdon CR5 3DD on Tuesday 29 September between 2pm and 8.30pm. This will be an opportunity to meet senior management and members of the project team, and gain information on the project.

Alternatively, If you are unable to attend the drop in, you can speak to our Customer Services Team on 01737 772000 or email CustomerRelations@waterplc.com. 

We sincerely apologise for any inconvenience these essential works may cause and wish to assure you that we will do all we can to mitigate the impact on the local community.


£22m upgrade for Woodmansterne Water Treatment Works (WTW) will secure water supplies for generations to come

Sutton and East Surrey Water (SESW) is undertaking a significant redevelopment and upgrading of its Woodmansterne Water Treatment Works off Outwood Lane, Chipstead, which includes the creation of a new soakaway lagoon on nearby land – this £22 million investment will help secure water supplies for existing and future customers throughout its supply area.

This important strategic project will provide greater resilience and flexibility within the Company’s supply network, particularly during periods of low rainfall or drought.

The redevelopment and upgrading work at Woodmansterne WTW, parts of which date back to 1905, will effectively increase output capacity by approximately 50 per cent, helping SESW to meet increasing water supply demands as the local population increases.

Preparatory ground clearance and highway access to the new soakaway lagoon off Rectory Lane will begin this autumn, with completion of this phase due in early 2016. Redevelopment of the treatment works site is set to start at the beginning of 2016. The overall construction project will take around 36 months to complete.

Meetings have been taking place with local elected representatives, residents’ groups, businesses and stakeholders to explain and discuss the redevelopment project, which has already been approved by the local planning authority.

SESW’s Project Manager Peter Isherwood, said:  “We are conscious that this essential project may cause some inconvenience to those living nearby, especially when traffic management is required on Rectory Lane. We will try to limit this as much as we can by continuing to work closely with the local community, Surrey County Council’s highways team and our project contractors.”

“We are also very aware of local issues such as the retention of footpaths and suitable landscaping and, where possible, we will be aiming to help resolve such matters in a mutually acceptable manner.”

We will be issuing regular project updates on this page as the work progresses. Information can also be provided by the SESW Customer Services Team on 01737 772000 or email CustomerRelations@waterplc.com


Got a question?
Find answers to your questions about our Woodmansterne Water Treatment Works upgrade here.

Click on the picture below for a PDF copy of the handout 

 

 

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