Afternoon All,

Time for an update on WINEP Great Ayton STW Storm Tank Capacity:

We have encountered some unexpected issues with sinking the shaft as we have come across a number of boulders which are preventing us from sinking the shaft underwater as intended. Having exhausted a number of other avenues, we are now progressing with a dewatering option to draw down the ground water in the immediate location of the shaft and allow the shaft to be sunk in the dry. We do not anticipate the dewatering having any detrimental effect on the surrounding environment. Work installing the dewatering solution should commence next week.

We now think we have identified a working solution to avoid diverting the existing surface water pipework within site which will much simply the works. Whist the solution is still undergoing the review process; it looks very promising and will remove the need for some significant red tape.

We have successfully completed the diversion of the pipework which feeds one of the trickling filters well ahead of schedule. This will hopefully allow us to proceed with the interceptor chamber and inlet pipework to feed the new shaft/storm tank ahead of schedule as well.

Thanks for taking the time to visit the portal.

Dave Eden, Project Manager

Morning All,

Let have another update on WINEP on the Great Ayton STW Storm Tank Capacity:

The work sinking the shaft which will form the new storm tank is progressing. The first five rings are in place, four of which are below ground level, and we continue to excavate for the remaining rings.

We have completed the various trial holes investigating potential simplification of the works to feed the new storm tank. This is currently in design review, the results of which we should know in the next day or two.

Having completed the trial holes, the pipe laying gang have now started the diversion for the pipework which feeds one of the site trickling filters. This needs to be altered to allow the construction of the new interceptor chamber and inlet pipe which, on completion, will send the storm water from the existing storm tanks to the new, giving us our increased capacity.

Thanks for taking the time to visit the portal.

Dave Eden, Project Manager

Afternoon All.

Time for an on the Great Ayton STW Storm Tank:

Our specialist sub-contractor is progressing the shaft for the new storm tank. The cutting ring and first normal ring are in place and the jacking collar complete. The jacks are in place, and we should start sinking the shaft tomorrow when the long reach excavator arrives. The collar and the jacks give us control of the shaft as it sinks, guiding it and allowing us to keep it plumb.

We are also continuing various trial holes on site looking at the possibility of a streamlined solution. The potential solution is difficult and may prove to be unworkable, but the potential benefits mean we need to at least examine the possibility.

Thanks for taking the time to read this update.

Dave Eden, Project Manager

Afternoon All.

Lets get up to speed with progress on the Great Ayton STW Storm Tank:

After the repairs to the surface water main and some assistance from the farmer it looks like the worst of the localised flooding has been addressed.

The access road and working area in the field immediately East/South-East of the treatment works has been completed. This involved erecting a perimeter fence to the work area, stripping the topsoil and laying geo-grid soil reinforcement and stone to create a robust access road and work area. The geo-grid soil reinforcement allowed a reduction in the thickness of the stone and so financial and environmental savings. Stone we don't use doesn't have to be produced or delivered.

Following the Christmas break, our specialist sub-contractor has arrived on site to commence installation of the shaft which will act as the new Storm Water Storage Tank. We have hit the ground running and hope to have the first two rings and jacking collar in place early next week.

We are also continuing a number of site investigations, from trial pits to duct surveys and ground water monitoring, to ensure we installing the most efficient solution possible.

That's all for now, thanks for taking the time to read and please have a look at the attached photos.

Dave Eden, Project Manager

Hi all.

I'd like to take this chance to introduce myself; I', Dave Eden the Esh-Stantec Project Manager who will be running the construction of the new storm tank for Northumbrian Water.

We started on site on 28th of October, setting up site cabins, fencing and general work areas.

Since then, we have repaired an existing surface water main which was damaged prior to our arrival. The main was both damaged and blocked and as such was contributing to localised flooding immediately outside of the Sewage Treatment Works (STW). The main is now free running so we should see an immediate improvement. Perhaps Storm Bert will give us a demonstration.

We have also carried out a number of investigations in the form of trial holes and pipe tracing to ensure the new storm tank and associated pipework do now impact on the existing services and structures. These will likely be ongoing intermittently for some time.

As of this week we have agreed access with the landowner for the field immediately east of the STW, so we have started installing temporary fencing and stripping topsoil with a view to installing a stone access road and works area that will give us the room we need to install the new storm shaft. The shaft itself will be inside the existing STW boundary.

That's all for now, thanks for taking the time to read and please have a look at the attached photos.

Dave Eden, Project Manager

I would like to take this opportunity to introduce myself. I am Jonathan Shaw, Northumbrian Water’s Project Manager and I will be looking after this scheme through to its completion. The scheme will be delivered by Northumbrian Water’s delivery partner Esh Stantec. 

Starting during November 2024 we will be carrying out construction works at Great Ayton Sewage Treatment Works to improve the site's compliance resilience. The work will comprise of the installation of a new storm tank, which will help prevent spills to the environment.

As the project develops I will keep you informed about our plans and progress, by sharing our proposals with you on this portal. I am very interested to understand your views. 

The team will post regular updates throughout the construction phase of the project and if you have any questions or want to make us aware of any additional assistance you require from us then please use the ‘Contact us’ button at the top of this page or post on this feed.

If you prefer a telephone conversation or require any further information or advice, please contact our Customer Centre on 0345 717 1100 or visit www.nwl.co.uk to request a call back from the project team.

Kind regards

Jonathan