Morning All.

Time for another Hexham STW Refurbishment update:

The seeding of the new filter beds is continuing well, with biological sampling results suggesting they will be mature well ahead of schedule.

We are continuing civils works on the inlet works area, currently installing all the remaining ducting and pipework ahead of constructing the 3 remaining base slabs.

We have commenced the works to core into the existing balancing tank with the wall plate now bolted to the wall of the chamber ready for pressure testing before the valve is installed ready for coring to begin. This core will allow us to divert the flows into the new inlet works once they are complete.

The refurbishment of the existing Detritor and grit rake is nearing completion. The equipment is all back in place and electrically connected with a view to bring it back into operation this week.

That's all for now, but as always, there's more information in the photos.

Time for another Hexham STW Refurb update:

The over pumping is now in place to recirculate the flows coming through the new filters into the old filters so that the wastewater is fully treated whilst the new filters are seeded. This process could take 4-5 months but given the warming weather we hope the bug will establish themselves much sooner.

The structural repairs to the Detritor are complete and we are looking to reinstall the refurbished grit rake 1^st May and commission the entire kit soon after.

Masonry repairs to the distribution chamber have been completed. Helical bars were grouted into the mortar between the bricks to tie the whole structure together and reinforce areas of cracking then the whole structure was repointed.

Looking forward we’ll turn our attention back to the inlet works area, installing further ductwork and slabs for the MCC, compactor and wash water booster. We will also core into the existing balancing tank for future connection to the new inlet works.

Thanks for taking the time to read and have a look at the attached photos for further information.

Dave Eden PM

Hi everyone,

Time for another update for Hexham STW Refurbishment:

The work to refurbish the existing Detritor and Grit Rake has hit a snag when we have found some structural significant cracking in the ground structure around a mounting point which will take considerable force. We’ll be removing the grit rake again to carry out some concrete repairs in the near future.

We are continuing to install new Ts on the pipework around the distribution chamber to allow the filters to be operated without using the distribution chamber if and when necessary. Three of the four are mostly complete.

We have pushed the seeding/over-pumping back a week to allow for the T’s to be completed and some tweaks to the set up of the pumps now that they have to share room with the T’s.

The new inlet screens slab has been blinded out ready for the Formwork, Reinforcement and Concrete (FRC) sub-contractor who started preparing shuttering today.

As mentioned previously, the continuing traffic management outside the site is not part of our works and is controlled by another contractor - emergency numbers should be displayed on the traffic management signage.

I’ve attached a few photos to illustrate progress on site.

Thanks for taking the time to read the update.

Dave Eden, Project Manager

Hi everyone,

Spring has sprung and we’re still moving forward with the refurbishment at Hexham STW.

Works to repair and re-waterproof the existing distribution chamber have reached a point where the chamber can be brought back into use rather than relying on expensive temporary pumps. The final epoxy coating is still to be done, but this requires a number of consecutive dry days so we will come back to that later in the year.

The Detritor is being reinstalled as I type, though the whole process will take a couple of weeks. Anyone nearby may be able to see the crane lifting the newly refurbished and re-painted pieces into place.

Work at Peth Head SPS to alter the pump set up and thereby smooth out the flows was completed last week. This should make the STW run more efficiently by providing more constant flows into the site rather than stop/start.

Construction of the 2nd recirculation manhole is complete ready for the seeding of the new filter which is expected to start WC01/04/24. The seeding could take up to 20 weeks, but it is hoped to be complete much sooner.

Work on the new inlet works is also underway. We have excavated down and broken out some old concrete structures, installed ducting and stoned up ready for blinding concrete by the end of the week and formwork reinforcement and concreting to start in the near future.

As mentioned previously, the continuing traffic management outside the site is not part of our works and is controlled by another contractor - emergency numbers should be displayed on the traffic management signage.

I’ve attached a few photos to illustrate progress on site.

Thanks for taking the time to read the update.

Dave Eden, Project Manager

Hi everyone,

Works are progressing well at Hexham STW Refurbishment, especially now we are getting extended periods of fine weather.

Works to repair and re-waterproof the existing distribution chamber are going well, with some extra labour on site and weekend working to try to get complete while the weather hold. All the repair and much of the waterproofing is finished and we will hopefully be applying the final epoxy layer next week.

We are also busy installing some Ts on the distribution pipework which will allow the filters to be operated without using the distribution chamber should it require further works in the future.

The Detritor continues to be refurbished offsite but is expected to be reinstalled WC 18/03/24.

Work has begun over at Peth Head SPS to alter the pump set up and thereby smooth out the flows coming into Hexham STW. This should take around 2 weeks.

Construction of the second recirculation manhole has been put on the back burner until the T’s are in place because we need either the Ts or the distribution chamber complete before we can begin the recirculation.

As mentioned previously, the continuing traffic management outside the site is not part of our works and is controlled by another contractor - emergency numbers should be displayed on the traffic management signage.

Thanks for taking the time to read the update. Please have a look at the attached photos for some more detail.

Dave Eden, Project Manager

Hi everyone,

Works are progressing at Hexham STW Refurbishment though the wet weather continues to provide challenges.

Works to extend the water main to the intended location of the new inlet works are complete as much as possible until the new inlet works is under construction.

The Detritor continues to be refurbished offsite and is expected to be away around 3 more weeks.

Works to repair and re-waterproof the existing distribution chamber are continuing and will take up to 4 more weeks depending on weather and flow issues.

I am pleased to say the distribution columns and arms on the new filters are in place, meaning the filters are structurally complete and ready for seeding.

Construction of the second recirculation manhole is underway. On completion of this manhole and the waterproofing works to the distribution chamber, we will be able to start passing flows through the new filter beds, which will gradually bring them into operation over a number of weeks.

Looking ahead, the electrical alterations to improve the operation of Peth Head SPS pumping into Hexham STW is now expected to commence in a week or two and ground works for the new inlet works at the STW are imminent.

As mentioned previously, the continuing traffic management outside the site is not part of our works and is controlled by another contractor - emergency numbers should be displayed on the traffic management signage.

Thanks for taking the time to read the update. I have also attached photos to illustrate.

Dave Eden

Project Manager

Hi everyone,

We are progressing well at Hexham STW Refurbishment despite the extremely poor weather causing some issues.

Works to extend the water main to the intended location of the new inlet works are continuing intermittently along the internal site road.

The Detritor removal was completed and is being refurbished offsite and is expected to be away around 6 more weeks.

Works to repair and re-waterproof the existing distribution chamber have commenced and are expected to take 4-6 weeks.

Installation of the distribution arms on the new filters should start next week.

When the arms and the waterproofing works are complete, we can start to seed the new filter beds to bring them into operation of the course of a number of weeks.

We are also starting to look at works at Peth Head Sewage Pumping Station which needs minor adjustments to go along with the main works at Hexham STW to make the flows more efficient.

Please note that the traffic management outside the site is not part of our works and is controlled by another contractor - emergency numbers should be displayed on the traffic management signage.

Thanks for taking the time to read the update. I have also attached photos to illustrate.

Dave Eden

Project Manager

Morning All and Happy New Year.

We have returned to work at Hexham STW Refurbishment after our hard-earned break.

After the unavoidable delay of remobilising plant and equipment back to site we have made good progress:

Works to extend the water main to the intended location of the new inlet works have commenced along the internal site road.

The Detritor has been isolated both from the wastewater flows and electrically, then cleaned, which has allowed our specialist sub-contract to come to site to remove the Detritor and take it off site for refurbishment, a process which will take some 8 weeks.

Electrical works have been carried out to remove lighting and instrumentation from the Distribution Chamber so that the structure can be repaired and reinforced, and the water containing areas can be fully waterproofed.

Installation of the new distribution arms to the rebuilt filters is planned for February, which, combined with other works, will allow us to circulate the flows through the rebuilt filters. Over a period of weeks this will cause the biological process to activate and bring the filters into operation.

Please note that the traffic management outside the site is not part of our works and is controlled by another contractor - emergency numbers should be displayed on the traffic management signage.

Thanks for taking the time to read the update. I have also attached photos to illustrate.

Dave Eden

Project Manager

Morning All, time for a final update of the year.

Work to fill the rebuilt filter beds with new filter media is complete, though the distribution arms will not be installed until the new year.

Another crane lift has taken place to remove the 3t excavator from the filter bed and the sub-contractor and the majority the plant for the filter works have now left site.

In the run up to the Christmas break our in-house gang will conduct further investigation trial holes to allow the inlet works slab design to be completed and construct new manhole/s for the filter seeding process. The remaining plant will also be demobilised.

The site will then be closing down from Friday 22nd of December until Monday 8th of January.

I would like to take this opportunity to wish everyone a Merry Christmas and a Happy New Year on behalf of the whole Esh-Stantec team here at Hexham STW Refurbishment.

Thanks for taking the time to read the update. I have also attached photos to illustrate.

Dave Eden

Project Manager

Afternoon All.

Work to rebuild the two filter beds at Hexham STW is approaching completion.

The filter media continues to be delivered to site in varying rates. After washing any dust from the media, it is placed in the filters by a 22t long reach excavator, where it is spread by a 3t excavator. The filling of the first filter was completed last week, followed by a crane lift to move the 3t excavator to the second filter. Filling of the second filter is continuing and is around 60% complete.

In the few remaining weeks until the Christmas break our filter contractor will complete his works and demobilise, whilst our in-house gang will construct new manholes, which are part of the process to bring the new filters into operation, and possibly install an extension to the site water main to feed the planned new inlet works.

There is plenty of works still to look forward to in the new year – refurbishment of the existing distribution chamber, seeding of the new filters, refurbishment of the existing detritor, and construction of the new inlet works, amongst others.

Thanks for taking the time to read the update. Photos are also attached for your perusal.

Dave